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Voiding Dysfunction in Children By Dr.Turky K. Al-Mouhissen Urology Chief Resident - WR King Abdulaziz Medical Center - WR.

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Presentation on theme: "Voiding Dysfunction in Children By Dr.Turky K. Al-Mouhissen Urology Chief Resident - WR King Abdulaziz Medical Center - WR."— Presentation transcript:

1 Voiding Dysfunction in Children By Dr.Turky K. Al-Mouhissen Urology Chief Resident - WR King Abdulaziz Medical Center - WR

2 Normal Bladder Function in Infants & Children: The bladder is an abdominal organ The bladder is an abdominal organ Detrusor consists of meshwork of smooth m. which has the ability to elicit maximal active tension over a wide range of length Detrusor consists of meshwork of smooth m. which has the ability to elicit maximal active tension over a wide range of length This allows the bladder to be filled at low pressure (compliance) This allows the bladder to be filled at low pressure (compliance) Reservoir function determined by activity of detrusor m. and bladder outlet Reservoir function determined by activity of detrusor m. and bladder outlet Bladder sphincter plays a major role in urinary continence by closure of bladder neck & proximal urethra Bladder sphincter plays a major role in urinary continence by closure of bladder neck & proximal urethra

3 Literature suggests that Literature suggests that Immature detrusor-sphincter coordination, manifested as detrusor hypercontractility and interrupted, commonly occurs in 1 st 1-2 years causing a degree of functional bladder outflow obstruction Immature detrusor-sphincter coordination, manifested as detrusor hypercontractility and interrupted voiding, commonly occurs in 1 st 1-2 years causing a degree of functional bladder outflow obstruction (Sillen et al,1992;Yeung et al,1998) (Sillen et al,1992;Yeung et al,1998) Some found significant age related differences in the histologic structure of the sphincter compared to adults Activation, coordination, and integration of various parts of the bladder-sphincter complex involves central, somatic & autonomic nervous system through Sacral parasympathatic (pelvic n.) Thoracolumbar symp. (hypogastric & sympathatic chain) Sacral somatic n. (pudendal n.)

4 Parasymp. N. fibers run in pelvic n. (S2-S4) to supply the pelvic and vesical plexuses before entering the bladder Parasymp. N. fibers run in pelvic n. (S2-S4) to supply the pelvic and vesical plexuses before entering the bladder Symp. n. arises from (T10-L2) to inferior mesenteric ganglion hypogastric n. to the pelvic plexus & bladder Symp. n. arises from (T10-L2) to inferior mesenteric ganglion hypogastric n. to the pelvic plexus & bladder There is also symp. innervation from T10-L2 supplying the detrusor and urethral sphincter There is also symp. innervation from T10-L2 supplying the detrusor and urethral sphincter The somatic nervous system (pudendal n.) supplies the periurethral pelvic floor muscles The somatic nervous system (pudendal n.) supplies the periurethral pelvic floor muscles The sensory & motor n. carried by all 3 nerves innervate the bladder and urethral sphincter The sensory & motor n. carried by all 3 nerves innervate the bladder and urethral sphincter

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6 Symp. supply causes Symp. supply causes Detrusor relaxation (B receptors) Detrusor relaxation (B receptors) Smooth m contraction at trigone & bladder neck (alpha receptors) Smooth m contraction at trigone & bladder neck (alpha receptors) Parasymp. supply causes detrusor contraction (muscarinic receptors) Parasymp. supply causes detrusor contraction (muscarinic receptors) Pudendal supply causes striated sphincter contraction Pudendal supply causes striated sphincter contraction Within the spinal cord, information from bladder afferents integrated with other sources and projected to brain stem centers to coordinate with mic. centers Within the spinal cord, information from bladder afferents integrated with other sources and projected to brain stem centers to coordinate with mic. centers

7 Development of Normal Bladder Function and Micturition Control CMG studies on normal infants showed CMG studies on normal infants showed bladder function in young children is very different from adults bladder function in young children is very different from adults During the 1 st 2-3 years of life During the 1 st 2-3 years of life There is progressive development from initially indiscriminate infants voiding pattern to more socially conscious and voluntary (adult) type of micturition There is progressive development from initially indiscriminate infants voiding pattern to more socially conscious and voluntary (adult) type of micturition

8 The natural evolution of bladder control entails nervous system & depends on: The natural evolution of bladder control entails nervous system & depends on: Progressive increase in bladder functional storage capacity Progressive increase in bladder functional storage capacity Maturation of voluntary control over the urethral striated muscle sphincter Maturation of voluntary control over the urethral striated muscle sphincter Development of direct volitional control over the bladder sphincter unit, so that the child can voluntary initiate or inhibit micturition reflex Development of direct volitional control over the bladder sphincter unit, so that the child can voluntary initiate or inhibit micturition reflex

9 Change in bladder function parameters Voiding frequency Voiding frequency During the 3 rd trimester, the fetus voids at rate 30 times/24 hrs During the 3 rd trimester, the fetus voids at rate 30 times/24 hrs Immediately after birth, this drops for the 1 st days only Immediately after birth, this drops for the 1 st days only Increases again after 1 st 1/52 to reach a peak by 2-4 /52 to an average once/hour Increases again after 1 st 1/52 to reach a peak by 2-4 /52 to an average once/hour This rate declines to times/day at 6-12 mo. This rate declines to times/day at 6-12 mo times/day by 2-3 years 8-10 times/day by 2-3 years

10 This reduction in voiding frequency observed during the 1 st years of life related mainly to an increase in bladder capacity parallel to body growth This reduction in voiding frequency observed during the 1 st years of life related mainly to an increase in bladder capacity parallel to body growth By the age of 12, voiding pattern is very similar to that in adult ( 4-6 voids / day ) By the age of 12, voiding pattern is very similar to that in adult ( 4-6 voids / day )

11 Bladder capacity Bladder capacity An adequate reservoir function of urine storage is necessary to meet the increase rate of urine production and decreased voiding frequency in the growing child An adequate reservoir function of urine storage is necessary to meet the increase rate of urine production and decreased voiding frequency in the growing child Bladder capacity can be estimated For young infants: Bladder capacity (ml) = * age (mo) For children: Bladder capacity (ml) = (age [yr] + 2) * 30 koffs formula Bladder capacity (ml) = 30 + (age [yr] * 30 Hijalmas formula

12 In parallel to increase in bladder capacity, the mean voided volume of each micturation increases with age In parallel to increase in bladder capacity, the mean voided volume of each micturation increases with age CMG studies showed that most infants with incomplete maturation of det.- sphin. coordination before the age 1, are still able to have satisfactory emptying (>80) CMG studies showed that most infants with incomplete maturation of det.- sphin. coordination before the age 1, are still able to have satisfactory emptying (>80) There are limited studies on detr. pressure at voiding in infants due techn. difficulties There are limited studies on detr. pressure at voiding in infants due techn. difficulties

13 Limited data documented higher maximum detr. pressure with mict. than in adults Limited data documented higher maximum detr. pressure with mict. than in adults Male infants voided significantly higher pressure than females (mean Pdetmax 118 vs. 75cm H20, P<.03) Male infants voided significantly higher pressure than females (mean Pdetmax 118 vs. 75cm H20, P<.03) Studies showed that high detrusor pressures noted during micturition were mainly observed only during the 1 st year of life & decreased progressively with age Studies showed that high detrusor pressures noted during micturition were mainly observed only during the 1 st year of life & decreased progressively with age

14 Evolution of Normal Micturition Control Traditionally, it has been assumed that micturition occurs by simple spinal reflex with no mediation by higher neural centers Traditionally, it has been assumed that micturition occurs by simple spinal reflex with no mediation by higher neural centers Recent studies showed that even in full term fetuses and newborns, mict. Is modulated by higher centers Recent studies showed that even in full term fetuses and newborns, mict. Is modulated by higher centers Further extensive modulation occurs during the postnatal period Further extensive modulation occurs during the postnatal period

15 During the 2 nd & 3 rd year of life, there is a progressive development toward a socially conscious continence and a more voluntary (adult) type mict. During the 2 nd & 3 rd year of life, there is a progressive development toward a socially conscious continence and a more voluntary (adult) type mict. The final steps usually achieved at 3-4 yrs The final steps usually achieved at 3-4 yrs Most develop the adult pattern of urinary control & will be dry day & night Most develop the adult pattern of urinary control & will be dry day & night The child has learned to inhibit a mict. Reflex and postpone voiding and voluntarily initiate mict. At socially acceptable time & place The child has learned to inhibit a mict. Reflex and postpone voiding and voluntarily initiate mict. At socially acceptable time & place

16 Neurologic control of normal mic. occurs at different levels of CNS from the spinal cord (sacral mic. centers) to the brain stem (pontine mic. Centers) Neurologic control of normal mic. occurs at different levels of CNS from the spinal cord (sacral mic. centers) to the brain stem (pontine mic. Centers) Cerebellum, basal ganglion, limbic system, thalamus and hypothalamus, and cerebral cortex Cerebellum, basal ganglion, limbic system, thalamus and hypothalamus, and cerebral cortex bladder is unique among other visceral organs bladder is unique among other visceral organs its function is under control of somatic and autonomic n. system its function is under control of somatic and autonomic n. system Beside acetylcholine & NE, other neurotransmitters involved during bladder stimulation Beside acetylcholine & NE, other neurotransmitters involved during bladder stimulation PG substance P, Opioid, vasoactive intestinal peptide, neuropeptide Y PG substance P, Opioid, vasoactive intestinal peptide, neuropeptide Y

17 Transitory Detrusor-Sphincter Discoordination in Infancy Studies showed that all children may transiently display some degree of abnormal bladder-sphincter function Studies showed that all children may transiently display some degree of abnormal bladder-sphincter function Urodynamic findings show association of high voiding pressures and interruption of flow BUT no impairment of overall bladder empting Urodynamic findings show association of high voiding pressures and interruption of flow BUT no impairment of overall bladder empting This type of dysfunction resolved with a period of successful toilet training, transient or intermittent, and does not persist This type of dysfunction resolved with a period of successful toilet training, transient or intermittent, and does not persist

18 Non-Neuropathic Bladder Sphincter Dysfunction in Children

19 Reported 15 % of 6-year old children suffer from Non-Neuogenic B.S.Dysfunction Reported 15 % of 6-year old children suffer from Non-Neuogenic B.S.Dysfunction Dysfunctional voiding may Dysfunctional voiding may starts with detrusor instability with sphincter & pelvic floor overactivity starts with detrusor instability with sphincter & pelvic floor overactivity then develops gradually fractionated voiding with increasing PVR then develops gradually fractionated voiding with increasing PVR Finally, develops bladder decompensation and the lazy bladder syndrome Finally, develops bladder decompensation and the lazy bladder syndrome Distinction between Neuropathic & Non- neuropathic bladder dysfunctions may not be clear Distinction between Neuropathic & Non- neuropathic bladder dysfunctions may not be clear

20 The term non-neuropathic is based purely on the fact that no obvious and identifiable neurologic lesions can be identified The term non-neuropathic is based purely on the fact that no obvious and identifiable neurologic lesions can be identified In adults, lower urinary tract function has been well understood and standardization of terminology has been established In adults, lower urinary tract function has been well understood and standardization of terminology has been established In contrast, neural control over the bladder-sphincter unit in children is age dependent and is much more variable and complex In contrast, neural control over the bladder-sphincter unit in children is age dependent and is much more variable and complex

21 General Etiologic Classification of Bladder Dysfunction Derangement of Nervous Control: Derangement of Nervous Control: Congenital malformation of CNS, e.g.: Congenital malformation of CNS, e.g.: myelomeningocele, spina bifida, caudal regression synd., tethered cord myelomeningocele, spina bifida, caudal regression synd., tethered cord Developmental disturbances, e.g.,: Developmental disturbances, e.g.,: Mental retardation, dysfunctional voiding, urge synd. Mental retardation, dysfunctional voiding, urge synd. Acquired conditions, e.g.: Acquired conditions, e.g.: CP, progressive degenerative diseases of CNS, transverse myelitis, MS, vascular malformations, trauma of spinal cord CP, progressive degenerative diseases of CNS, transverse myelitis, MS, vascular malformations, trauma of spinal cord

22 Disorders of Detrusor & Sphincteric Muscle function: Disorders of Detrusor & Sphincteric Muscle function: Congenital conditions Congenital conditions Muscular dystophy, neuronal dyplasia Muscular dystophy, neuronal dyplasia Acquired conditions Acquired conditions Chronic bladder distension, fibrosis of detrusor & bladder wall Chronic bladder distension, fibrosis of detrusor & bladder wall Structural abnormalities Structural abnormalities Congenital conditions Congenital conditions Bladder extrophy, epispadias, cloacal anomoly, uretroceles, PUV, prune belly syndrome Bladder extrophy, epispadias, cloacal anomoly, uretroceles, PUV, prune belly syndrome Acquired conditions Acquired conditions Traumatic stricture, damage to sphincter or urethra Traumatic stricture, damage to sphincter or urethra Other unclassified conditions Other unclassified conditions Giggle incontinence Giggle incontinence Hinman syndrome Hinman syndrome Ochoa syndrome (urofacial syndrome) Ochoa syndrome (urofacial syndrome)

23 Functional classification of bladder dysfunction based on functional state of the bladder- sphincter complex with respect of based on functional state of the bladder- sphincter complex with respect of detrusor activity bladder sensation bladder compliance and function urethral function during the filling & voiding phase of CMG

24 During the filling phase: During the filling phase: Detrusor activity Detrusor activity Normal or stable Normal or stable Overactive : phasic involuntary detrusor contractions which occur spontaneously or provoked by alteration of posture, coughing, walking, jumping Overactive : phasic involuntary detrusor contractions which occur spontaneously or provoked by alteration of posture, coughing, walking, jumping Unstable: contraction unrelated to underlying neurologic disorder Unstable: contraction unrelated to underlying neurologic disorder Detrusor hyperreflexia : overactivity related disturbance of neural control mechanism Detrusor hyperreflexia : overactivity related disturbance of neural control mechanism

25 Bladder sensation during filling phase: Bladder sensation during filling phase: Normal / hypersensitive / hyposensitive / absent Normal / hypersensitive / hyposensitive / absent Bladder capacity Bladder capacity normal/ / high / low normal/ / high / low Compliance Compliance Normal / high / low Normal / high / low Urethral function Urethral function Normal / incompetent Normal / incompetent

26 During the voiding phase During the voiding phase Detrusor activity Detrusor activity Normal: Voiding achieved by voluntarily initiated detrusor contractions that is sustained and cannot usually suppressed voluntarily until after 4 year old Normal: Voiding achieved by voluntarily initiated detrusor contractions that is sustained and cannot usually suppressed voluntarily until after 4 year old Underactive Underactive Acontractile Acontractile Urethral function Urethral function Normal Normal obstructive obstructive

27 Bladder-Sphincter dysfunction during filling Overactive (unstable) bladder, urge syndrome, urge incontinence Overactive (unstable) bladder, urge syndrome, urge incontinence Traditionally the infant bladder has been described as unstable or uninhibited Traditionally the infant bladder has been described as unstable or uninhibited Recent studies showed that bladder is normally quiescent and stable even in newborn Recent studies showed that bladder is normally quiescent and stable even in newborn Clinically, the condition of (unstable bladder) is best exhibited by URGE SYNDROME with or without urge incontinence Clinically, the condition of (unstable bladder) is best exhibited by URGE SYNDROME with or without urge incontinence

28 Urge syndrome characterized frequent attacks of sudden and imperative sensations of urge due to detrusor overactivity during filling (girls>boys) Urge syndrome characterized frequent attacks of sudden and imperative sensations of urge due to detrusor overactivity during filling (girls>boys) The unstable contractions are often counteracted by voluntary contractions in the pelvic floor muscles to externally compress the urethra (hold maneuvers) exhibited as squatting in many cases The unstable contractions are often counteracted by voluntary contractions in the pelvic floor muscles to externally compress the urethra (hold maneuvers) exhibited as squatting in many cases Urge incontinence consists of small quantities of urine loss Urge incontinence consists of small quantities of urine loss More in afternoon when the child plays and is not alert enough to contract the pelvic floor in response to the urge sensation More in afternoon when the child plays and is not alert enough to contract the pelvic floor in response to the urge sensation

29 Functional urinary incontinence Functional urinary incontinence Defined as involuntary loss of urine due to failure of control of bladder sphincter unit, frequent enough to cause social or hygienic problem with the absence of underlying anatomic causes Defined as involuntary loss of urine due to failure of control of bladder sphincter unit, frequent enough to cause social or hygienic problem with the absence of underlying anatomic causes Stress incontinence represents involuntary leakage of urine occurring when the intravesical pressure exceeds the bladder outlet or urethral pressure in the absence of measurable detrusor contractions Stress incontinence represents involuntary leakage of urine occurring when the intravesical pressure exceeds the bladder outlet or urethral pressure in the absence of measurable detrusor contractions Unlike adults, true stress incont. Extremlely uncommon in neurologically normal children and generally not associated with abnormal CMG Unlike adults, true stress incont. Extremlely uncommon in neurologically normal children and generally not associated with abnormal CMG

30 Giggle incontinence: Giggle incontinence: Involuntary and typically unpredictable wetting during giggling or laughter Involuntary and typically unpredictable wetting during giggling or laughter In contrast to stress incontinence, it produces much larger volume of urine leak amounting to complete bladder emptying In contrast to stress incontinence, it produces much larger volume of urine leak amounting to complete bladder emptying CMG may be normal or occasionally demonstrate some detrusor overactivity CMG may be normal or occasionally demonstrate some detrusor overactivity Rx is difficult bt sometimes a course of anticholinergic drugs may help Rx is difficult bt sometimes a course of anticholinergic drugs may help Some suggested that its centrally mediated and hereditary disorder that may respond to CNS stimulants as methylphenidate Some suggested that its centrally mediated and hereditary disorder that may respond to CNS stimulants as methylphenidate

31 Bladder-Sphincter dysfunction during bladder emptying Dysfunctional voiding Dysfunctional voiding Characterized by incomplete relaxation or overactivity of the pelvic floor muscles during voiding Characterized by incomplete relaxation or overactivity of the pelvic floor muscles during voiding Can manifest in different patterns depending on the degree of outflow obstruction caused and the status of the detrusor activity Can manifest in different patterns depending on the degree of outflow obstruction caused and the status of the detrusor activity

32 Staccato and fractionated voiding Staccato and fractionated voiding In staccato voiding the urinary stream is often delayed after the onset of detrusor contraction and is typically interrupted resulting in a few small squirts of urine passed in quick sensation In staccato voiding the urinary stream is often delayed after the onset of detrusor contraction and is typically interrupted resulting in a few small squirts of urine passed in quick sensation Interrupted voiding caused by periodic bursts of pelvic floor muscle activities during micturition resulting in characteristic abrupt elevation of voiding pressure coinciding with paradoxical cessation of urinary flow Interrupted voiding caused by periodic bursts of pelvic floor muscle activities during micturition resulting in characteristic abrupt elevation of voiding pressure coinciding with paradoxical cessation of urinary flow Flow time usually prolonged and bladder emptying incomplete Flow time usually prolonged and bladder emptying incomplete

33 Fractionated voiding is characterized by infrequent & incomplete emptying secondary to detrusor inactivity Fractionated voiding is characterized by infrequent & incomplete emptying secondary to detrusor inactivity Micturition occurs in several small discontinuous fractions due to poor detrusor contractions Micturition occurs in several small discontinuous fractions due to poor detrusor contractions Significant PVR Significant PVR Abdominal straining usually evident to improve emptying Abdominal straining usually evident to improve emptying Straining paradoxically counteracted by reflex increase in pelvic floor muscles that is triggered by increase in intravesical pressure Straining paradoxically counteracted by reflex increase in pelvic floor muscles that is triggered by increase in intravesical pressure

34 Infrequent voiding and (lazy bladder) syndrome Infrequent voiding and (lazy bladder) syndrome Described together as they represent a spectrum of diseases that are more commonly occurs in girls Described together as they represent a spectrum of diseases that are more commonly occurs in girls The lazy bladder syndrome is generally regarded as the endpoint of long standing dysfunctional voiding occurring in a fully decompensated system The lazy bladder syndrome is generally regarded as the endpoint of long standing dysfunctional voiding occurring in a fully decompensated system Due to chronic functional outflow obst., there is gradual deterioration in detrusor contractility and emptying efficiency Due to chronic functional outflow obst., there is gradual deterioration in detrusor contractility and emptying efficiency PVR & bladder capacity increase progressively with inefficient emptying PVR & bladder capacity increase progressively with inefficient emptying

35 Bcs urge sensation is either absent or diminished, voiding is very infrequent and occasionally the child may not void for 8-10 hrs or longer if engaged in activity Bcs urge sensation is either absent or diminished, voiding is very infrequent and occasionally the child may not void for 8-10 hrs or longer if engaged in activity Typical presentation, the mother always complains that the child never voids unless told to do so Typical presentation, the mother always complains that the child never voids unless told to do so Other presentations Other presentations Recurrent UTI, Overflow incontinence, constipation Recurrent UTI, Overflow incontinence, constipation CMG findings CMG findings Large bladder capacity, very high compliance on filling, absent detrusor contractions, voiding associated with increased abdominal pressures Large bladder capacity, very high compliance on filling, absent detrusor contractions, voiding associated with increased abdominal pressures

36 Hinmans Syndrome & Occult Neuropathic bladder Hinmans Syndrome & Occult Neuropathic bladder Different names: Different names: Nonneurogenic neurogenic bladder / subclinical neurogenic bladder / Hinman syndrome / occult neuropathic bladder Nonneurogenic neurogenic bladder / subclinical neurogenic bladder / Hinman syndrome / occult neuropathic bladder Acquired form of bladder-sphincteric dysfunction in children Acquired form of bladder-sphincteric dysfunction in children characterized by a combination of bladder decompensation with incontinence, poor emptying, and recurrent UTI characterized by a combination of bladder decompensation with incontinence, poor emptying, and recurrent UTI Most children have significant bowel dysfunction Most children have significant bowel dysfunction Has all the clinical & CMG features of neuropathic dysfunction but NO neuologic pathology Has all the clinical & CMG features of neuropathic dysfunction but NO neuologic pathology CMG shows marked sphincteric overactivity with abrupt contractions of pelvic floor CMG shows marked sphincteric overactivity with abrupt contractions of pelvic floor

37 Ochoa (urofacial) syndrome: Ochoa (urofacial) syndrome: Children have all classic features of dysfunctional voiding, including urinary incontinence, recurrent UTI, constipation, reflux, Upper tract damage + peculiar painful or apparently crying facial expression during smiling Children have all classic features of dysfunctional voiding, including urinary incontinence, recurrent UTI, constipation, reflux, Upper tract damage + peculiar painful or apparently crying facial expression during smiling Autosomal recessive, located on chromosome 10 Autosomal recessive, located on chromosome 10 CMG shows sustained contraction of external sphincter during voiding CMG shows sustained contraction of external sphincter during voiding

38 Of 66 children reported by Ochoa: Of 66 children reported by Ochoa: 33% renal functional impairment 33% renal functional impairment 26% HTN 26% HTN 24% ESRD 24% ESRD Bcs neural ganglion controlling the facial muscles are situated very close to the pontine micturition centers Bcs neural ganglion controlling the facial muscles are situated very close to the pontine micturition centers A small genetically predetermined congenital neurologic lesion in this area may be responsible for both the peculiar facial expression & bladder dysfunction A small genetically predetermined congenital neurologic lesion in this area may be responsible for both the peculiar facial expression & bladder dysfunction

39 Postvoid dibbling Postvoid dibbling Involuntary leakage of urine immediately after voiding Involuntary leakage of urine immediately after voiding Refers to post toilet trained girls who dribble soon after standing up after a void and otherwise normal with no other urinary symptoms Refers to post toilet trained girls who dribble soon after standing up after a void and otherwise normal with no other urinary symptoms May be result of vesicovaginal reflux where urine is trapped in the vagina during voiding & once the child stands, the urine dribble out May be result of vesicovaginal reflux where urine is trapped in the vagina during voiding & once the child stands, the urine dribble out When in doubt, can be confirmed by MCUG When in doubt, can be confirmed by MCUG Harmless, tends to resolve with age Harmless, tends to resolve with age Child may be taught to empty her vagina by simply voiding with her thigh apart & leaning forward after voiding before getting up Child may be taught to empty her vagina by simply voiding with her thigh apart & leaning forward after voiding before getting up

40 Dysfunctional Elimination Syndrome, Constipation, & Bladder Dysfunction DES refers to broad spectrum of functional disturbances that may affect the urinary tract including that of functional bowel disturbances DES refers to broad spectrum of functional disturbances that may affect the urinary tract including that of functional bowel disturbances The close proximity of the rectum to posterior bladder wall make it possible that The close proximity of the rectum to posterior bladder wall make it possible that gross distension of the rectum by impacted feces can result in mechanical compression of the bladder & bladder neck leading to urinary obstruction gross distension of the rectum by impacted feces can result in mechanical compression of the bladder & bladder neck leading to urinary obstruction

41 Classified as : Classified as : Functional disorder of filling Functional disorder of filling Overactive, overdisteded, insensate bladder, may be associated with fecal impaction or rectal distension with infrequent call to stool Overactive, overdisteded, insensate bladder, may be associated with fecal impaction or rectal distension with infrequent call to stool Functional disorder of emptying Functional disorder of emptying Over recruitment of pelvic floor activity during voiding causing interrupted / incomplete emptying, with defecation difficulties due to nonrelaxation of puborectalis or pain on defecation Over recruitment of pelvic floor activity during voiding causing interrupted / incomplete emptying, with defecation difficulties due to nonrelaxation of puborectalis or pain on defecation

42 DES influenced the clinical outcome of ureteric reimplantation surgery for VUR DES influenced the clinical outcome of ureteric reimplantation surgery for VUR Children with constipation had the highest likehood of developing breakthrough UTI & requires surgery Children with constipation had the highest likehood of developing breakthrough UTI & requires surgery DES had an adverse effect on the rate of spontaneous reflux resolution requiring an average 1.6 years longer to outgrow reflux than in children without DES DES had an adverse effect on the rate of spontaneous reflux resolution requiring an average 1.6 years longer to outgrow reflux than in children without DES After successful Rx of constipation After successful Rx of constipation 89% of those with daytime incontinence and 63% of nighttime incontinence became dry Loening-Baucke et al (1997) 89% of those with daytime incontinence and 63% of nighttime incontinence became dry Loening-Baucke et al (1997) Management of the underlying dysfunction should be given priority in the treatment protocol of children with conditions such as VUR / incontinence / UTI bsc successful Rx may significantly improve outcome Management of the underlying dysfunction should be given priority in the treatment protocol of children with conditions such as VUR / incontinence / UTI bsc successful Rx may significantly improve outcome

43 Relationship Betw. Bladder Sphincter Dysfunction, VUR, & Recurrent UTI Impairment in the function of lower tract often coexists with recurrent UTI & VUR without neurologic pathology Impairment in the function of lower tract often coexists with recurrent UTI & VUR without neurologic pathology The most common abnormalities of lower tract coexist with VUR are The most common abnormalities of lower tract coexist with VUR are Detrusor overactivity Detrusor overactivity Uncoordinated detrusor sphincter during voiding Uncoordinated detrusor sphincter during voiding Reflux may be worsened by detrusor instability Reflux may be worsened by detrusor instability

44 Studies showed that infants with UTI & VUR have high prevalence of high voiding detrusor pressure Studies showed that infants with UTI & VUR have high prevalence of high voiding detrusor pressure Male refluxers have higher maximum detrusor pressure > female Male refluxers have higher maximum detrusor pressure > female May be due to high urethral resistance of the longer male urethra and smaller urethral meatus with anatomic difference in the external urethral sphincter May be due to high urethral resistance of the longer male urethra and smaller urethral meatus with anatomic difference in the external urethral sphincter Spontaneous resolution of VUR may be delayed in presence of abnormal dynamics of the bladder Spontaneous resolution of VUR may be delayed in presence of abnormal dynamics of the bladder Successful Rx of underlying bladder dysfunction result in marked increase in the rate of spontaneous resolution of reflux & recurrent UTI Successful Rx of underlying bladder dysfunction result in marked increase in the rate of spontaneous resolution of reflux & recurrent UTI

45 Evaluation of Non-Neurogenic Bladder Sphincter Dysfunction History History Majority present after toilet training with symptoms of nighttime / daytime urinary incontinence or both Majority present after toilet training with symptoms of nighttime / daytime urinary incontinence or both May present earlier with UTI or VUR May present earlier with UTI or VUR Hx should include questions to exclude neurologic & congenital abnormalities Hx should include questions to exclude neurologic & congenital abnormalities Bowel dysfunction can coexist in the form of encorpresis, constipation and fecal impaction Bowel dysfunction can coexist in the form of encorpresis, constipation and fecal impaction Urinary Hx should include symptoms of storage & voiding of urine Urinary Hx should include symptoms of storage & voiding of urine

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47 Physical examination: Physical examination: Usually normal Usually normal Careful examination is required Careful examination is required Occasionally, palpable bladder may be found Occasionally, palpable bladder may be found External genitalia examination External genitalia examination Abnormalities of lower spine Abnormalities of lower spine Neural tubal defect Neural tubal defect Asymmetrical gluteal folds Asymmetrical gluteal folds Hairy patch Hairy patch Dermovascular malformation Dermovascular malformation Lipomatous abnormality of sacral region Lipomatous abnormality of sacral region Rectal exam. may reveal impacted stool Rectal exam. may reveal impacted stool

48 Laboratory Laboratory Not routinely required Not routinely required Urinanalysis may be performed to R/O bacteruria & glucosuria Urinanalysis may be performed to R/O bacteruria & glucosuria Serum & urine osmolarity may be looked in case of nocturnal enuresis Serum & urine osmolarity may be looked in case of nocturnal enuresis

49 Ultrasound Ultrasound 1 st line investigation 1 st line investigation Simple, reliable, available, & noninvasive tool Simple, reliable, available, & noninvasive tool Provides anatomical & functional problems Provides anatomical & functional problems Recently used to measure bladder parameters used in calculating bladder volume & wall thickness index (BVWI) Recently used to measure bladder parameters used in calculating bladder volume & wall thickness index (BVWI) BVWI classified into normal / thick / thin BVWI classified into normal / thick / thin Studies showed these classifications corresponded closely to CMG findings of bladder dysfunctions Studies showed these classifications corresponded closely to CMG findings of bladder dysfunctions This classification can act as reliable tool to guide for further invasive investigations This classification can act as reliable tool to guide for further invasive investigations

50 Other imaging studies: Other imaging studies: Radiologic examination of the spine may be necessary to exclude neuologic causes Radiologic examination of the spine may be necessary to exclude neuologic causes MCUG may be needed to R/O VUR & to assess the status of the urethra MCUG may be needed to R/O VUR & to assess the status of the urethra Urodynamics studies: Urodynamics studies: To describe the physiologic parameters involved in bladder mechanics during filling & voiding To describe the physiologic parameters involved in bladder mechanics during filling & voiding

51 Urodynamics (cont.) Urodynamics (cont.) Uroflow Uroflow In children, normal flow rate are different from adults In children, normal flow rate are different from adults Usually there is poor correlation betw. Qmax & outflow resistance Usually there is poor correlation betw. Qmax & outflow resistance Bcs the detrusor is able to exert much stronger contractions to counteract any increased resistance Bcs the detrusor is able to exert much stronger contractions to counteract any increased resistance Pattern of flow curve is important Pattern of flow curve is important

52 Patterns of uroflow curve: Patterns of uroflow curve: Bell shape : normal Bell shape : normal Tower shape : produced by explosive voiding contractions which is seen in overactive bladder Tower shape : produced by explosive voiding contractions which is seen in overactive bladder Low plateau : representative of outlet obstruction Low plateau : representative of outlet obstruction Staccato pattern : seen with sphincteric overactivity during voiding with peak and throughs throughtout voiding Staccato pattern : seen with sphincteric overactivity during voiding with peak and throughs throughtout voiding Interrupted voiding : seen in a contractile or underactive bladder Interrupted voiding : seen in a contractile or underactive bladder

53 Urodynamics (cont.) Urodynamics (cont.) Conventional fill urodynamic studies Conventional fill urodynamic studies Bladder catheter introduced transurethrally or suprapubically Bladder catheter introduced transurethrally or suprapubically The use of SPC has been suggested as a better alternative to transurethral catheterization The use of SPC has been suggested as a better alternative to transurethral catheterization Natural fill urodynamic studies Natural fill urodynamic studies The child is asked to drink to allow the bladder to fill up on its own rate The child is asked to drink to allow the bladder to fill up on its own rate Artificial filling may inhibit the detrusor response and attenuate its maximum contractile potential, making detrusor instability less pronounced & undetectable Artificial filling may inhibit the detrusor response and attenuate its maximum contractile potential, making detrusor instability less pronounced & undetectable Natural fill cystometry is the preferred technique in children Natural fill cystometry is the preferred technique in children The combined use of artificial & natural filling CMG is helpful to accurately delineate the underlying bladder dysfunction The combined use of artificial & natural filling CMG is helpful to accurately delineate the underlying bladder dysfunction

54 Ambulatory urodynamic studies

55 Management of Non-Neuropathic Bladder-Sphincter Dysfunction Behavior Modification & standard Urotherapy Behavior Modification & standard Urotherapy Urotherapy is a nonpharmacologic nonsurgical combination of cognitive, behavioural, & physical therapy to normalize micturiton pattern & prevent functional disturbances of lower tract Urotherapy is a nonpharmacologic nonsurgical combination of cognitive, behavioural, & physical therapy to normalize micturiton pattern & prevent functional disturbances of lower tract Children & parents education on proper voiding mechanics Children & parents education on proper voiding mechanics Instructions how and when to void Instructions how and when to void Teaching children correct positions during voiding Teaching children correct positions during voiding

56 Behavior Modification & standard Urotherapy (cont.) Teaching how to relax the pelvic floor and avoid straining Teaching how to relax the pelvic floor and avoid straining Modification of drinking and voiding habits to include proper hydration with timed voiding Modification of drinking and voiding habits to include proper hydration with timed voiding Assessment of their bowel function Assessment of their bowel function

57 Urotherapy. Pelvic floor rehabilitation with real time biofeedback monitoring

58 Biofeedback and pelvic floor rehabilitation Biofeedback and pelvic floor rehabilitation Biofeedback is based on the concept of building self perception on detrusor contractions and pelvic floor relaxation in the pt Biofeedback is based on the concept of building self perception on detrusor contractions and pelvic floor relaxation in the pt By combining uroflow with real time monitoring, child is able to see how well he / she is voiding By combining uroflow with real time monitoring, child is able to see how well he / she is voiding Biofeedback is proven to be highly effective either on its own or in combination with standard urotherapy Biofeedback is proven to be highly effective either on its own or in combination with standard urotherapy

59 Urotherapy. Biofeedback with real time uroflowmetry

60 Neuromodulation Neuromodulation Recent studies reported that transcutaneous electrical nerve stimulation (TENS) is simple, cost effective, noninvasive treatment modality Recent studies reported that transcutaneous electrical nerve stimulation (TENS) is simple, cost effective, noninvasive treatment modality The use of low frequency electrical current to inhibit detrusor activity in adults is common The use of low frequency electrical current to inhibit detrusor activity in adults is common Appears to modulate excitatory & inhibitory components of bladder control Appears to modulate excitatory & inhibitory components of bladder control

61 Bowel management Bowel management Principles include rectal emptying of impacted stool and maintenance of regular soft stools Principles include rectal emptying of impacted stool and maintenance of regular soft stools Oral laxatives or rectal enemas Oral laxatives or rectal enemas Dietary modification Dietary modification Correct toilet posture & correct recruitment of abdominal muscles in the defecation process Correct toilet posture & correct recruitment of abdominal muscles in the defecation process Parental education Parental education

62 Medications Medications Antimuscarinic agents Antimuscarinic agents These agents are the gold standard in Rx of overactive bladder These agents are the gold standard in Rx of overactive bladder Muscarinic receptors are found in detrusor muscle Muscarinic receptors are found in detrusor muscle Bladder contractions are initiated by stimulation of these receptors with the release of Ach from cholinergic n. Bladder contractions are initiated by stimulation of these receptors with the release of Ach from cholinergic n. Main action of antimuscarinic drugs on M1 & M3 receptor subtypes, thought to be responsible of detrusor overactivity Main action of antimuscarinic drugs on M1 & M3 receptor subtypes, thought to be responsible of detrusor overactivity

63 Antimuscarinic agents (cont.) Antimuscarinic agents (cont.) Antimuscarinic, such as Oxybutynin, act by reducing the frequency & intensity of involuntary contractions causing increase in functional bladder capacity Antimuscarinic, such as Oxybutynin, act by reducing the frequency & intensity of involuntary contractions causing increase in functional bladder capacity The nonselective pattern of activity and penetration of BBB are known to induce systemic & central S/E The nonselective pattern of activity and penetration of BBB are known to induce systemic & central S/E

64 Alpha adrenergic blockers Alpha adrenergic blockers The density of the noradrenergic nerves increases markedly toward the bladder neck particularly in males The density of the noradrenergic nerves increases markedly toward the bladder neck particularly in males The normal response to NE is relaxation & contraction of the bladder neck The normal response to NE is relaxation & contraction of the bladder neck Alpha blockers used in pts with evidence of bladder neck dysfunction for relaxation of bladder neck Alpha blockers used in pts with evidence of bladder neck dysfunction for relaxation of bladder neck

65 Other medications Other medications Tricyclic antidepressents Tricyclic antidepressents E.g. impiramine E.g. impiramine Effective in increasing urine storage by decreasing detrusor contractility & increasing outlet resistance Effective in increasing urine storage by decreasing detrusor contractility & increasing outlet resistance Precise mechanism is not clear Precise mechanism is not clear Possible effect on bladder by inhibition of NE reuptake, producing alpha adrenergic stimulation Possible effect on bladder by inhibition of NE reuptake, producing alpha adrenergic stimulation Associated with high S/E Associated with high S/E

66 Beta-Adrenergic agonists Beta-Adrenergic agonists Can cause significant increase in bladder capacity Can cause significant increase in bladder capacity Bt can also cause significant CVS S/E Bt can also cause significant CVS S/E Parasympathicomimetics / Ca antagonists / K Ch. Openers / PG inhibitors Parasympathicomimetics / Ca antagonists / K Ch. Openers / PG inhibitors Rarely used in children due to unfavorable S/E or to lack of proven efficacy Rarely used in children due to unfavorable S/E or to lack of proven efficacy

67 Clean intermittent Catheterization Clean intermittent Catheterization Necessary in pts with decompensated bladders or lazy bladder syndrome Necessary in pts with decompensated bladders or lazy bladder syndrome Regular emptying of the bladder to achieve low pressure emptying which improves detrusor contractility & bladder emptying function Regular emptying of the bladder to achieve low pressure emptying which improves detrusor contractility & bladder emptying function Some of these children may be able to eventually be weaned from use of this procedure Some of these children may be able to eventually be weaned from use of this procedure

68 Surgery Surgery Indicated when conservative management with nonpharmacologic & pharmacologic Rx fails Indicated when conservative management with nonpharmacologic & pharmacologic Rx fails Bladder augmentation may be performed to to produce low pressure system with increased bladder capacity Bladder augmentation may be performed to to produce low pressure system with increased bladder capacity Augmentation using intestinal segments such as colon / ileum / stomach Augmentation using intestinal segments such as colon / ileum / stomach Augmentation has its metabolic complications Augmentation has its metabolic complications

69 Surgery (cont.) Surgery (cont.) Surgical means has been employed to reduce urethral / sphincteric pressure as alternative to alpha blockers Surgical means has been employed to reduce urethral / sphincteric pressure as alternative to alpha blockers Ballon dilatation of bladder neck & botulinum A toxin injection into the sphincter has been used Ballon dilatation of bladder neck & botulinum A toxin injection into the sphincter has been used Requires repeated attempts Requires repeated attempts ? Long term effect & efficacy ? Long term effect & efficacy

70 Neuropathic Dysfunction of Lower Urinary Tract

71 Neurospinal dysraphisms Neurospinal dysraphisms Myelodysplasia Myelodysplasia Lipomeningocele & other spinal dysraphisms Lipomeningocele & other spinal dysraphisms Sacral agenesis Sacral agenesis Central nervous system insults Central nervous system insults Cerebral palsy Cerebral palsy Traumatic injuries to the spine Traumatic injuries to the spine

72 Neurospinal dysraphisms Myelodysplasia Myelodysplasia The most common cause of neurogenic bladder dysfunction in children The most common cause of neurogenic bladder dysfunction in children Formation of spinal cord & vertebral column begins at 18 th day of gestation Formation of spinal cord & vertebral column begins at 18 th day of gestation Closure of canal proceeds in caudal direction Closure of canal proceeds in caudal direction Closure complete at 35 days Closure complete at 35 days ? Mechanism that results in closure and wt produces dysraphism ? Mechanism that results in closure and wt produces dysraphism

73 Incidence reported 1 / 1000 births Incidence reported 1 / 1000 births Incidence increases with more than one member affected Incidence increases with more than one member affected The medical Research Council Vitamin Study Group recommends that women of childbearing age take 4mg/d of folic acid beginning at least 2/12 before pregnancy The medical Research Council Vitamin Study Group recommends that women of childbearing age take 4mg/d of folic acid beginning at least 2/12 before pregnancy Folate deficiency can lead to myelodysplastic abnormality Folate deficiency can lead to myelodysplastic abnormality

74 RelationshipIncidence General population Mother with one affected child20-50 Mother with two affected children100 Patient with myelodysplasia40 Mother older than 35 years30 Sister of mother with affected child10 Sister of father with affected child3 Nephew who is affected2

75 Myelodysplasia Myelodysplasia various abnormal conditions of the vertebral column that affect spinal cord function various abnormal conditions of the vertebral column that affect spinal cord function Meningocele Meningocele Occurs when just the meninges ( no neual elements ) extend beyond the confines of vertebral canal Occurs when just the meninges ( no neual elements ) extend beyond the confines of vertebral canal Myelomeningocele Myelomeningocele Neural tissue, either nerve root or portions of spinal cord has evaginated with the meningocele Neural tissue, either nerve root or portions of spinal cord has evaginated with the meningocele Lipomyelomeningocele Lipomyelomeningocele Fatty tissue has developed with the cord structures and both extend with the protruding sac Fatty tissue has developed with the cord structures and both extend with the protruding sac

76 Myelomeningocele accounts for > 90% of all open spinal dysraphic states Myelomeningocele accounts for > 90% of all open spinal dysraphic states Most spinal defects at lumber vertebrae Most spinal defects at lumber vertebrae LocationIncidence (%) Cervical-high thoracic2 Low thoracic5 Lumbar26 Lumbosacral47 Sacral20

77

78 Usually, the meningocele is made of flimsy covering of transparent tissue Usually, the meningocele is made of flimsy covering of transparent tissue It may be opened with CSF leak It may be opened with CSF leak For this reason, urgent repair is necessary For this reason, urgent repair is necessary Sterile precautions should be applied after birth till time of repair Sterile precautions should be applied after birth till time of repair 85 % associated with Arnold-Chiari malformation 85 % associated with Arnold-Chiari malformation Cerebral tonsils herniate down through the foramen magnum Cerebral tonsils herniate down through the foramen magnum Herniation causes obstruction of the 4 th ventricle & preventing the CSF from entering the subarchnoid space Herniation causes obstruction of the 4 th ventricle & preventing the CSF from entering the subarchnoid space

79 Its possible that leakage of CSF from the open spinal column accounts for herniation of posterior brain stem down the foramen magnum hydrocephalus Its possible that leakage of CSF from the open spinal column accounts for herniation of posterior brain stem down the foramen magnum hydrocephalus Neurologic lesion produced by this condition varies Neurologic lesion produced by this condition varies Depending on what neural element have everted with the meningocele sac Depending on what neural element have everted with the meningocele sac The bony vertebral level often provides little or no clue to the exact neurologic lesion produced The bony vertebral level often provides little or no clue to the exact neurologic lesion produced 10% of newborn with MM exhibit no abnormality in CMG 10% of newborn with MM exhibit no abnormality in CMG 24% of children with normal lower tract at birth, develop upper motor neuron changes over time 24% of children with normal lower tract at birth, develop upper motor neuron changes over time

80 Newborn assessment Newborn assessment Renal U/S with measurement of post void residual is performed as early as possible after birth Renal U/S with measurement of post void residual is performed as early as possible after birth Before / after closure of spinal defect Before / after closure of spinal defect CMG is delayed until its safe to transport the child to the urodynamic suit and place him on the back or side for the test CMG is delayed until its safe to transport the child to the urodynamic suit and place him on the back or side for the test If the infant cannot empty the bladder after spontaneous void or with Crede maneuver, CIC is begun even before CMG is done If the infant cannot empty the bladder after spontaneous void or with Crede maneuver, CIC is begun even before CMG is done If Crede maneuver is effective in emptying the bladder, its performed at regular basis instead of CIC until lower tract is fully evaluated If Crede maneuver is effective in emptying the bladder, its performed at regular basis instead of CIC until lower tract is fully evaluated

81 The normal bladder capacity in newborn is 10-15ml The normal bladder capacity in newborn is 10-15ml Residual urine of <5 ml is acceptable Residual urine of <5 ml is acceptable Other tests should be performed Other tests should be performed Urinanalysis & culture Urinanalysis & culture Serum creatinine Serum creatinine Careful neurologic examination of LL Careful neurologic examination of LL Once spinal closure has healed sufficiently Once spinal closure has healed sufficiently Renal U/S & renal scan for reassessment of upper tract Renal U/S & renal scan for reassessment of upper tract VCUG VCUG CMG CMG

82 Findings Findings 15-20% of newborns have abnormal urinary tract on radiological exam. when first evaluated 15-20% of newborns have abnormal urinary tract on radiological exam. when first evaluated 3% have hydro 2ndry to spinal shock, probably from spinal canal closure 3% have hydro 2ndry to spinal shock, probably from spinal canal closure 15% have abnormalities that develop in utero as result of abnormal lower tract due to outlet obstruction 15% have abnormalities that develop in utero as result of abnormal lower tract due to outlet obstruction CMG in newborn showed that 63% have bladder contractions CMG in newborn showed that 63% have bladder contractions A combination of bladder contractility & external sphincter activity results in A combination of bladder contractility & external sphincter activity results in synergic (26%) synergic (26%) Dyssynergic with / out poor detrusor compliance (37%) Dyssynergic with / out poor detrusor compliance (37%) Complete denervation (36%) Complete denervation (36%)

83 This categorization of lower tract function has been useful bcs it reveals This categorization of lower tract function has been useful bcs it reveals Which child is at risk for urinary tract changes Which child is at risk for urinary tract changes Who should be treated prophylactically Who should be treated prophylactically Who needs close surveillence Who needs close surveillence Who can be monitored at great intervals Who can be monitored at great intervals It appears that outlet obstruction is a major contributor to the development of urinary tract deterioration It appears that outlet obstruction is a major contributor to the development of urinary tract deterioration

84 Recommendations Recommendations Expectant management revealed that infants with outlet obst. in the form of DSD are at considerable risk for urinary tract deterioration Expectant management revealed that infants with outlet obst. in the form of DSD are at considerable risk for urinary tract deterioration These pts should be treated prophylactically These pts should be treated prophylactically CIC alone OR in combination with anticholinergic when CIC alone OR in combination with anticholinergic when Detrusor filling pressures > 40 cm H2O Detrusor filling pressures > 40 cm H2O Voiding pressures > cm H2O Voiding pressures > cm H2O Resulted in an incidence of urinary tract deterioration of only 8-10% Resulted in an incidence of urinary tract deterioration of only 8-10%

85 Oxybutynin hydrochloride administered in a dose of 1 mg / year of age BID Oxybutynin hydrochloride administered in a dose of 1 mg / year of age BID In neonates & children < 1year, dose < 1mg & increase proportionally as the age reaches 1 year In neonates & children < 1year, dose < 1mg & increase proportionally as the age reaches 1 year On rare occasions when overactive or poor compliant bladder fails to respond, augmentation cystoplasty may be needed On rare occasions when overactive or poor compliant bladder fails to respond, augmentation cystoplasty may be needed

86 Neurologic findings & recommendations Neurologic findings & recommendations Neurologic lesion in myelodysplasia is a dynamic disease process in which changes take place throughout childhood Neurologic lesion in myelodysplasia is a dynamic disease process in which changes take place throughout childhood When a change is noted on neurologic, orthopedic, or urodynamic assessment, radiologic investigation of the CNS often reveals When a change is noted on neurologic, orthopedic, or urodynamic assessment, radiologic investigation of the CNS often reveals Tethering of the spinal cord Tethering of the spinal cord A syrinx or hydromyelia of the cord A syrinx or hydromyelia of the cord Increased intracranial pressure due shunt malfunction Increased intracranial pressure due shunt malfunction Partial herniation of the brain stem and cerebellem Partial herniation of the brain stem and cerebellem

87 MRI is the test of choice as it reveals anatomic details of the spinal column & CNS MRI is the test of choice as it reveals anatomic details of the spinal column & CNS Sequential urodynamics testing on yearly basis beginning in the newborn period and continuing until 5 yrs old Sequential urodynamics testing on yearly basis beginning in the newborn period and continuing until 5 yrs old It may be necessary to repeat CMG if upper tract dilates 2ndry to impaired drainage from a poor compliant detrusor It may be necessary to repeat CMG if upper tract dilates 2ndry to impaired drainage from a poor compliant detrusor

88 Sphincter ActivityRecommended TestsFrequency Intact-synergicPostvoid residual volumeq 4 mo IVP or renal echoq 12 mo UDSq 12 mo Intact-dyssynergic IVP or renal echoq 12 mo UDSq 12 mo VCUG or RNC q 12 mo Partial denervationPostvoid residual volumeq 4 mo IVP or renal echoq 12 mo UDS § q 12 mo VCUG or RNC q 12 mo Complete denervationPostvoid residual volumeq 6 mo Renal echoq 12 mo Surveillance in infants with myelodysplasia

89 Management of VUR Management of VUR VUR occurs in 3-5 % of newborns with myelodysplasia VUR occurs in 3-5 % of newborns with myelodysplasia Usually associated with poor detrusor compliance, detrusor overactivity or DSD Usually associated with poor detrusor compliance, detrusor overactivity or DSD If untreated, incidence of VUR in these infants at risk increases with time until 30-40% affected by 5 years of age If untreated, incidence of VUR in these infants at risk increases with time until 30-40% affected by 5 years of age

90 VUR grade 1-3 who void spontaneously or who have complete lesions with little or no outlet resistance with good bladder emptying VUR grade 1-3 who void spontaneously or who have complete lesions with little or no outlet resistance with good bladder emptying Prophylactic Abx only Prophylactic Abx only High grade reflux High grade reflux CIC to ensure complete emptying CIC to ensure complete emptying Children who cannot empty their bladder spontaneously regardless of the grade Children who cannot empty their bladder spontaneously regardless of the grade Treated with CIC Treated with CIC Children with poor detrusor compliance with / out hydro Children with poor detrusor compliance with / out hydro To add anticholenergic drugs to lower intravesical pressure and ensure adequate upper tract decompensation To add anticholenergic drugs to lower intravesical pressure and ensure adequate upper tract decompensation

91 Bacteriuria occurs in 56% of children with CIC & not harmful Bacteriuria occurs in 56% of children with CIC & not harmful Except in presence of high grade reflux Except in presence of high grade reflux Symptomatic UTI & renal scarring rarely occurs in lesser grades of reflux Symptomatic UTI & renal scarring rarely occurs in lesser grades of reflux Crede maneuver should be avoided in children with reflux, especially those with reactive external sphincter Crede maneuver should be avoided in children with reflux, especially those with reactive external sphincter It results in a reflex response in external sphincter that increases urethral resistance & raises the pressure needed to expel urine from bladder It results in a reflex response in external sphincter that increases urethral resistance & raises the pressure needed to expel urine from bladder Aggravating the degree of reflux & accentuating its water hammer effect on kidneys Aggravating the degree of reflux & accentuating its water hammer effect on kidneys

92 Vesicostomy drainage rarely required today but indicated in Vesicostomy drainage rarely required today but indicated in Infants who has severe reflux that CIC & anticholenergic fail to improve upper tract drainage Infants who has severe reflux that CIC & anticholenergic fail to improve upper tract drainage Parents cannot adapt to catheterization program Parents cannot adapt to catheterization program Who are not good candidates for augmentation cystoplasty Who are not good candidates for augmentation cystoplasty

93 The indications of antireflux surgery are not very different from those with normal bladder The indications of antireflux surgery are not very different from those with normal bladder Recurrent symptomatic UTI while receiving adequate Abx therapy & appropriate CIC techniques Recurrent symptomatic UTI while receiving adequate Abx therapy & appropriate CIC techniques Persistent hydro despite effective emptying of the bladder & lowering of intravesical pressure Persistent hydro despite effective emptying of the bladder & lowering of intravesical pressure Severe reflux with anatomic abnormality at the UVJ Severe reflux with anatomic abnormality at the UVJ Reflux that persists into puberty Reflux that persists into puberty Presence of reflux in any child undergoing surgery to increase outlet resistance Presence of reflux in any child undergoing surgery to increase outlet resistance

94 Antireflux surgery can be very effective in children with neurogenic bladder dysfunction as long as its combined with measures to ensure complete bladder emptying Antireflux surgery can be very effective in children with neurogenic bladder dysfunction as long as its combined with measures to ensure complete bladder emptying Since the advent of CIC, success rate for antireflux surgery approached 95 % Since the advent of CIC, success rate for antireflux surgery approached 95 % The endoscopic injection of Deflux has altered the management of reflux in children with MM The endoscopic injection of Deflux has altered the management of reflux in children with MM Its long term effects are yet to be appreciated Its long term effects are yet to be appreciated

95 Continence Continence Initial attempts at achieving continence include CIC & drug therapy to maintain low intravesical pressure Initial attempts at achieving continence include CIC & drug therapy to maintain low intravesical pressure Drugs Drugs Glycopyrrolate (Robinol) : most potent oral anticholenergic drug available today same other S/E Glycopyrrolate (Robinol) : most potent oral anticholenergic drug available today same other S/E Tolteradine (Detrol): newly approved, equally effective as oxybutynin with fewer S/E Tolteradine (Detrol): newly approved, equally effective as oxybutynin with fewer S/E Hyoscyamine (levsin) : potency less, fewer S/E Hyoscyamine (levsin) : potency less, fewer S/E Intravesical oxybutynin : fewer S/E compared to oral Intravesical oxybutynin : fewer S/E compared to oral

96 Botulinum roxin A injected into the detrusor muscle has been effectively used Botulinum roxin A injected into the detrusor muscle has been effectively used Paralyzes the bladder for varying period of time Paralyzes the bladder for varying period of time May become viable Rx in the future May become viable Rx in the future Alpha sympathomimetic agents Alpha sympathomimetic agents If CMG reveals that urethral resistance is inadequate to maintain continence If CMG reveals that urethral resistance is inadequate to maintain continence Phenylpropanolamine is the most effective agent Phenylpropanolamine is the most effective agent

97 Surgery Surgery Viable option when drug therapy fails to achieve continence Viable option when drug therapy fails to achieve continence Generally intervention is delayed till 5 yrs old Generally intervention is delayed till 5 yrs old Enterocystoplasty using sigmoid, cecum & small intestine Enterocystoplasty using sigmoid, cecum & small intestine If bladder neck or urethral resistance is insufficient to allow adequate storage, bladder neck reconstruction is considered If bladder neck or urethral resistance is insufficient to allow adequate storage, bladder neck reconstruction is considered

98 Currently, Deflux injections at the bladder neck are being advocated Currently, Deflux injections at the bladder neck are being advocated enhances outlet resistance enhances outlet resistance Alternative to bladder neck reconstruction Alternative to bladder neck reconstruction No long term data No long term data Continent urinary diversion with closure of bladder neck has been used to provide better quality of life for intractable urethral incompetence Continent urinary diversion with closure of bladder neck has been used to provide better quality of life for intractable urethral incompetence

99 Sexuality Sexuality In several studies, 28-40% of MM had one or more sexual encounters In several studies, 28-40% of MM had one or more sexual encounters All of them had a desire to marry & to bear children All of them had a desire to marry & to bear children In one study, 72% of male subjects have erection, 2/3 were able to ejeculate In one study, 72% of male subjects have erection, 2/3 were able to ejeculate Other studies revealed 70-80% of MM women were able to become pregnant Other studies revealed 70-80% of MM women were able to become pregnant

100 The degree of sexuality is inversely proportional to the level of neuologic dysfunction The degree of sexuality is inversely proportional to the level of neuologic dysfunction Boys reach puberty at age similar to normal boys Boys reach puberty at age similar to normal boys In MM Girls, breast development & menarche start 2 yrs earlier than usual normal girls In MM Girls, breast development & menarche start 2 yrs earlier than usual normal girls

101 Bowel function Bowel function The external anal sphincter i innervated by the same nerves that modulate the external urethral sphincter The external anal sphincter i innervated by the same nerves that modulate the external urethral sphincter The internal anal sphincter is influenced by more proximal n. from sympathatic nervous system The internal anal sphincter is influenced by more proximal n. from sympathatic nervous system The internal sphincter reflexively relaxes in response to anal distension The internal sphincter reflexively relaxes in response to anal distension Consequently, bowel incontinence is frequently unpredictable Consequently, bowel incontinence is frequently unpredictable Incontinence not associated with the attainment of urinary incontinence Incontinence not associated with the attainment of urinary incontinence

102 Lipomeningocele & other Spinal dysraphism Group of congenital defects that affects the formation of spinal column but do not result in open vertebral canal Group of congenital defects that affects the formation of spinal column but do not result in open vertebral canal Incidence of lipomeningocele in families 0.043% Incidence of lipomeningocele in families 0.043% Lesion have no obvious outward signs Lesion have no obvious outward signs

103 Lipomeningocele Intradural lipoma Diastematomyelia Tight filum terminale Dermoid cyst/sinus Aberrant nerve roots Anterior sacral meningocele Cauda equina tumor Types of occult spinal dysraphisms

104 >90% have cutaneous abnormalities overlying the spines >90% have cutaneous abnormalities overlying the spines Small dimple Small dimple Skin tag to a tuft of hair Skin tag to a tuft of hair Dermal vascular malformation Dermal vascular malformation Very noticeable subcutaneous lipoma Very noticeable subcutaneous lipoma Asymmetrically curving gluteal cleft Asymmetrically curving gluteal cleft Careful inspection of the legs may show high arched foot / alterations in the configuration of the toes / discrepancy in muscle size / shortness / decreased strength in one leg typically the ankle / gait abnormality Careful inspection of the legs may show high arched foot / alterations in the configuration of the toes / discrepancy in muscle size / shortness / decreased strength in one leg typically the ankle / gait abnormality

105 Small lipomeningoceleHair patch Dermal vascular malformation dimple Abnormal gluteal cleft

106 Absent perineal sensation / back pain / secondary incontinence may be noted Absent perineal sensation / back pain / secondary incontinence may be noted Abnormal lower tract function in 40-90% Abnormal lower tract function in 40-90% Abnormality increase with age Abnormality increase with age Difficulty with toilet training Difficulty with toilet training Urinary incontinence after period of dryness Urinary incontinence after period of dryness Recurrent UTI Recurrent UTI Fecal soiling Fecal soiling

107 Majority perfectly normal neurologic examination Majority perfectly normal neurologic examination CMG CMG Abnormal lower tract function in 1/3 of infants < 18/12 Abnormal lower tract function in 1/3 of infants < 18/12 Most likely abnormality is UMN lesion characterized by overactive bladder &/or hyperactive sacral reflexes Most likely abnormality is UMN lesion characterized by overactive bladder &/or hyperactive sacral reflexes Rarely, mild form of DSD Rarely, mild form of DSD LMN signs occurs in 10% only LMN signs occurs in 10% only

108 All children > 3 yrs who have not been operated on OR whom occult dysraphism has been lately diagnosed All children > 3 yrs who have not been operated on OR whom occult dysraphism has been lately diagnosed Have upper or lower lesion or in combination on CMG (92%) within 2 yrs Have upper or lower lesion or in combination on CMG (92%) within 2 yrs When observed expectantly from infancy after Dx was made, 58% deteriorate When observed expectantly from infancy after Dx was made, 58% deteriorate

109 Pathogenesis Pathogenesis Various occult spinal dysraphic lesions produces different neuologic findings, Reasons: Various occult spinal dysraphic lesions produces different neuologic findings, Reasons: Compression on the cauda equina or sacral n. roots by expanding lipoma or lipomeningocele Compression on the cauda equina or sacral n. roots by expanding lipoma or lipomeningocele Tension on the cord from tethering 2ndry to differential growth rates in bony vertebrae and neural elements while the lower end of the cord is held in place by lipoma or thickened filum terminale Tension on the cord from tethering 2ndry to differential growth rates in bony vertebrae and neural elements while the lower end of the cord is held in place by lipoma or thickened filum terminale Fixation of the split lumbosacral cord by intervertebral bony specule or fibrous band Fixation of the split lumbosacral cord by intervertebral bony specule or fibrous band

110 Normally, the conus medullaris ends just below the L2 vertebraae at birth and recedes upward to T12 by adulthood Normally, the conus medullaris ends just below the L2 vertebraae at birth and recedes upward to T12 by adulthood When the cord does not rise or fixed in place bcs of these lesions, ischemic injury may ensue When the cord does not rise or fixed in place bcs of these lesions, ischemic injury may ensue Correction of the lesion in infancy result not only in stabilization, bt also in improvement in the neurologic pictures in many instances Correction of the lesion in infancy result not only in stabilization, bt also in improvement in the neurologic pictures in many instances

111 Recommendations Recommendations MRI MRI Spinal U/S in children < 3/12 Spinal U/S in children < 3/12 At this age, vertebral bones have not ossified At this age, vertebral bones have not ossified Useful screening tool for visualization of spinal canal Useful screening tool for visualization of spinal canal Currently, most NS advocates laminectomy & removal of the intraspinal process as completely as possible, without injuring nerve roots or cord to release the tether and prevent further injury from subsequent growth Currently, most NS advocates laminectomy & removal of the intraspinal process as completely as possible, without injuring nerve roots or cord to release the tether and prevent further injury from subsequent growth

112 Sacral Agenesis The absence of part or all of 2 or more lower vertebral bodies The absence of part or all of 2 or more lower vertebral bodies Teratogenic factors play a role Teratogenic factors play a role IDDM mothers have 1% of giving birth to a child with sacral agenesis IDDM mothers have 1% of giving birth to a child with sacral agenesis 16% of children with sacral agenesis have a mother with IDDM 16% of children with sacral agenesis have a mother with IDDM Maternal insulin-Ab complexes noted to cross the placenta Maternal insulin-Ab complexes noted to cross the placenta

113 Deletion of chr.7q36 has a role Deletion of chr.7q36 has a role Maternal drug exposure (Minoxidil) reported to cause sacral agenesis Maternal drug exposure (Minoxidil) reported to cause sacral agenesis Familial cases if sacral agenesis associated with Curarino syndrome Familial cases if sacral agenesis associated with Curarino syndrome Presacral mass Presacral mass Sacral agenesis Sacral agenesis Anorectal malformation Anorectal malformation Deletion in chr.7, leading to HLXB9 genetic mutation Deletion in chr.7, leading to HLXB9 genetic mutation

114 Diagnosis of sacral agenesis Diagnosis of sacral agenesis Presentation bimodal Presentation bimodal ¾ at early infancy ¾ at early infancy Remainder at 4-5 yrs Remainder at 4-5 yrs can be Dx parentally due to frequent use of U/S can be Dx parentally due to frequent use of U/S If not detected prenatally or at birth, Dx is delayed If not detected prenatally or at birth, Dx is delayed May present with failed attempts at toilet training May present with failed attempts at toilet training Sensation intact & lower limb function is normal usually Sensation intact & lower limb function is normal usually

115 The only clue beside the high index of suspicion is The only clue beside the high index of suspicion is Flattened buttocks Flattened buttocks Low gluteal cleft Low gluteal cleft Palpation of the coccyx is used to detect absent vertebrae Palpation of the coccyx is used to detect absent vertebrae Dx confirmed with a lateral film of lower spine Dx confirmed with a lateral film of lower spine MRI is diagnostic MRI is diagnostic

116 Gluteal crease is short and seen only inferiorly

117

118 Findings Findings CMG CMG UMNL - 35% UMNL - 35% LMNL - 40% LMNL - 40% No signs of denervation at all - 25% No signs of denervation at all - 25%UMNL Overactive detrusor Overactive detrusor Exaggerated sacral reflexes Exaggerated sacral reflexes Absence of voluntary control over sphincter function Absence of voluntary control over sphincter function DSD no sphincteric deenervation DSD no sphincteric deenervation Bladder is thick wall (or trabeculated), with closed bladder neck on VCUG or U/S Bladder is thick wall (or trabeculated), with closed bladder neck on VCUG or U/S

119 LMN Acontractile detrusor Acontractile detrusor Partial or complete denervation of external sphincter Partial or complete denervation of external sphincter Diminished or absent sacral reflexes Diminished or absent sacral reflexes Bladder smooth and small with opened bladder neck Bladder smooth and small with opened bladder neck The presence or absence of bulbocavernous reflex is an indicator of an UMNL / LMNL respectively The presence or absence of bulbocavernous reflex is an indicator of an UMNL / LMNL respectively UTI present in 75% over time UTI present in 75% over time VUR occurs in UMNL (75%) and in LMNL (40%) VUR occurs in UMNL (75%) and in LMNL (40%)

120 Recommendations Recommendations CMG / Ultrasound / VCUG or nuclear cystography CMG / Ultrasound / VCUG or nuclear cystography UMNL UMNL Anticholinergic Anticholinergic +/- CIC +/- CIC If anticholinergic ineffective in controlling overactive detrusor, augmentation cystoplasty required If anticholinergic ineffective in controlling overactive detrusor, augmentation cystoplasty required

121 LMNL LMNL CIC & alpha sympathomimetics drugs for those who cannot empty the bladders or stay dry between CIC CIC & alpha sympathomimetics drugs for those who cannot empty the bladders or stay dry between CIC Injection of bulking agents Injection of bulking agents Artificial urinary sphincter implantation Artificial urinary sphincter implantation + Rx bowel dysfunction

122 Associated conditions with sacral agenesis Associated conditions with sacral agenesis Imperforate anus Alone or part of anomalies ( VATER / VACTERL ) Alone or part of anomalies ( VATER / VACTERL ) Male > female 1.5:1 Male > female 1.5:1 Sacral agenesis occurs with spectrum of hindgut abnormalities in Currarino syndrome Sacral agenesis occurs with spectrum of hindgut abnormalities in Currarino syndrome Associattion with fistula to the lower tract is common Associattion with fistula to the lower tract is common Most common findings on CMG Most common findings on CMG UMNL with overactive bladder UMNL with overactive bladder And or DSD And or DSD

123 CNS insults Cerebral palsy Cerebral palsy Nonprogressive injury of the brain occurring in the perinatal period that produces either a neuromuscular disability, a specific symptom complex, or cerebral dysfunction Nonprogressive injury of the brain occurring in the perinatal period that produces either a neuromuscular disability, a specific symptom complex, or cerebral dysfunction Incidence is 1.5 / 1000 births Incidence is 1.5 / 1000 births Lesions classified according to which extremities involved and wt kind of dysfunction Lesions classified according to which extremities involved and wt kind of dysfunction Spastic diplegia is the most common Spastic diplegia is the most common

124 FemaleMale High Anorectal agenesis With rectovaginal fistula Without fistula With rectourethral (prostatic) fistula Rectal atresia Without fistula Intermediate Rectal atresia Rectovestibular fistulaIntermediate Rectovaginal fistula Rectovestibular urethral fistula Anal agenesis without fistula Low Anovestibular fistula Anocutaneous fistula Anal stenosis Rare malformation Cloacal malformation Rare malformation

125 Most children has total urinary control Most children has total urinary control 23.5% has persistent incontinence 23.5% has persistent incontinence The presence of incontinence is often related to the extent of physical impairment The presence of incontinence is often related to the extent of physical impairment Abnormal bladder & urethral sphincter function was found in almost all Abnormal bladder & urethral sphincter function was found in almost all

126 TypeNumber% Upper motor neuron lesion4986 Mixed upper +lower motor neuron lesion59.5 Incomplete lower motor neuron lesion11.5 No urodynamic lesion23

127 Type of LesionNo. of Patients Upper motor neuron Uninhibited contractions35 Detrusor sphincter dyssynergy7 Hyperactive sacral reflexes6 No voluntary control3 Small-capacity bladder2 Hypertonia2 Lower motor neuron Excessive polyphasia5 Amplitude + duration potentials4

128 Table Perinatal Risk Factors in Cerebral PalsyTable Perinatal Risk Factors in Cerebral Palsy FactorUMN (No. of Patients)LMN (No. of Patients) Prematurity101 Respiratory distress/arrest/apnea 92 Neonatal seizures5- Infection5- Traumatic birth5- Congenital hydrocephalus3- Placenta previa/abruption22 Hypoglycemia ± seizures2- Intracranial hemorrhage2- Cyanosis at birth13 No specific factor noted15-

129 Recommendations Recommendations Overactive bladder treated with anticholinergic Overactive bladder treated with anticholinergic +/- CIC +/- CIC Dorsal rhizotomy in selected group of children who fail to respond to less invasive measures Dorsal rhizotomy in selected group of children who fail to respond to less invasive measures

130 Traumatic injuries to the spine Rarely encountered in children Rarely encountered in children Pts with upper thoracic or cervical lesion are likely to have autonomic dysreflexia with spontaneous discharge of alpha1 stimulants during bladder filling & with contraction of detrusor Pts with upper thoracic or cervical lesion are likely to have autonomic dysreflexia with spontaneous discharge of alpha1 stimulants during bladder filling & with contraction of detrusor Monitoring of BP & availability of alpha blockers are mandatory during VCUG or CMG Monitoring of BP & availability of alpha blockers are mandatory during VCUG or CMG

131 Management Management If retention immediately after trauma, foley catheter is inserted and kept in place as short time as possible If retention immediately after trauma, foley catheter is inserted and kept in place as short time as possible Until the pt is stable and aseptic CIC can be started safely on regular basis Until the pt is stable and aseptic CIC can be started safely on regular basis The goal is balanced voiding at pressures < 40 cmH2O, which reduces the 30% risk of urinary tract deterioration seen in poorly managed pts The goal is balanced voiding at pressures < 40 cmH2O, which reduces the 30% risk of urinary tract deterioration seen in poorly managed pts If cannot be achieved, CIC is continued If cannot be achieved, CIC is continued

132 Anticholinergic drugs (P.O. or intavesically) added as they are effective in reducing overactive bladder Anticholinergic drugs (P.O. or intavesically) added as they are effective in reducing overactive bladder Alternative Rx Alternative Rx External urethral sphincterotomy External urethral sphincterotomy Urethral stent placement Urethral stent placement Injection of botulinum A toxin (Botox) into the external sphincter Injection of botulinum A toxin (Botox) into the external sphincter Continent catheterizable abdominal urinary stoma in pts with low cervical or upper thoracic lesions who cannot easily catheterize themselves Continent catheterizable abdominal urinary stoma in pts with low cervical or upper thoracic lesions who cannot easily catheterize themselves


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