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Rosemary Schiller 610 519- 6813 St. Mary’s 1st Floor, Office Hours Tue 11:30-1:30 http://www39.homepage.vill anova.edu/rosemary.schille r/
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Antepartum Complications zHigh-Risk Pregnancy
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What is a High Risk Pregnancy zIncreased probability of poor maternal or fetal outcome due to one or more of the following factors: ymedical yreproductive ypsychosocial
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Medical Risk Factors zPreexisting Medical Conditions ye. g. diabetes, anemia, heart disease, herpes ygenetic factors ylifestyle factors
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Obstetric/Reproductive zPast pregnancy conditions yprevious preterm labor and delivery yprevious cesarean sections yprevious pregnancy induced hypertension ygrand multiparity
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Psychosocial factors zaccess to prenatal care zsocial support systems zadaptation to pregnancy zclient compliance
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Maternal Mortality Rates In 1935 582 mothers died for every 100,000 live births, while today, the maternal mortality rate has been reduced to 7.8/100,000 What factors have contributed to this declining maternal mortality rate?
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Changes in Healthcare contributing to better pregnancy outcomes: zImproved control for diabetics zBetter heart disease detection and prevention zImproved anesthesia zAvailability of blood products/antibiotics zNew technologies yultrasound yprenatal diagnosis zRisk assessment tools
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Risk Assessment zMany risk assessment tools yACOG Antepartum Record xAssessment tools are only as good as the person eliciting the information is at getting a comprehensive holistic history xMost risk assessment tools do a better job of predicting risk in multiparas than in primiparas
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Diagnostic Tests zUltrasound Examination of the fetus
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Prenatal Diagnosis zAmniocentesis, Chorionic villus sampling zMaternal Alpha-fetoprotein zUltrasound scanning, basic and targeted zDoppler flow studies zPercutaneous umbilical blood sampling zStress and nonstress tests zBiophysical profile zFetal Movement
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zChorionic villus sampling
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Amniocentesis
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BIOPHYSICAL PROFILE (30 minute observation period) z1. REACTIVE NST z2. FETAL BREATHING MOVEMENT z3. FETAL BODY MOVEMENT z4. FETAL TONE z5. AMNIOTIC FLUID VOLUME
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SCORE z2 POINTS=NORMAL z0 POINTS=ABNORMAL results:8-10 maximal score 0-4 severe fetal compromise delivery indicated
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1. NON STRESS TEST(NST) external monitoring for 20 minutes; poor specificity >4 fetal heart accelerations (>15 bpm over baseline for 15 seconds) following fetal movement in fetus >34 weeks no heart accelerations in immaturity sleep maternalsedation
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contraction stress test CST (not used for biophysical profile) external monitoring after oxytocin or maternal breast stimulation > 3 uterine contraction in 10 minutes; 50% specificity
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2. FETAL BREATHING MOVEMENT Breathing period at least 60 seconds
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2.FETAL BODY MOVEMENT >3 discrete movements of limbs/trunk
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4. FETAL TONE Upper and lower limbs usually flexed with head or chest >1 episode of extension with return to flexion
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5. AMNIOTIC FLUID VOLUME Largest pocket> 1 cm in vertical diameter without containing loops of cord
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COMMON COMPLICATIONS EARLY PREGNANCY
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EARLY ANTEPARTUM HEMMORAGE Vaginal bleeding <20 weeks of gestation
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Incidence 15% to 25% clinically recognized Maybe as high as 50%
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Spontaneous Abortion The naturally occurring termination of pregnancy before viability
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Spontaneous Abortion zThreatened Abortion zInevitable Abortion zComplete Abortion zMissed Abortion zRecurrent Abortion
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Threatened Abortion: Uterine bleeding in early pregnancy, with or without cramping.
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Inevitable Abortion : Symptoms of threatened abortion plus the physical finding of dilatation of the internal os of the cervix.
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Incomplete Abortion: Passage of a portion of the products of conception from the uterus.
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Complete Abortion : Passage of all of the products of conception from the uterus.
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Missed Abortion: Retention of the conceptus in the uterus for a clinically appreciable time after death of the embryo or fetus.
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Habitual Abortion: The usual criterion is three or more consecutive abortions.
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Complications of Abortion Hemorrhage Infection Clotting Disorders
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HEMMORHAGE More common with late abortions. Continued heavy bleeding indicates retained tissue (incomplete abortion).
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INFECTION (septic abortion) seen most commonly with criminally-induced abortionbut may ensue in spontaneous or therapeutic abortion. Septic shock may occur in severe instances.
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CLOTTING DISORDERS If a missed abortion is retained beyond one month,thromboplastin maternal circulation may result in a clotting disorder (DIC). This risk is greater in late abortion.
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ECTOPIC PREGNANCY zPregnancy outside the uterus yfallopian tubes yabdomen yrare:coincidence of ectopic and uterine preg. associated with PID previous ectopic tubal surgery IUD (?)
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Ectopic Pregnancy
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hydatiform mole trophoblastic proliferationof chorionic villi uterus large for dates (50%) severe eclampsia prior to 24 weeks 1st trimester bleeding abnormal elevation of beta-hCG passing grapelike vesicles per vagina
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HYPEREMESIS GRAVIDARUM Excessive and debilitating emesis resulting in symptoms of zweight loss zdehydration zketonuria zhigh urine specific gravity
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ETIOLOGY UNKNOWN possible causes: zhormonal (HCG, estradiol, thyroxine) incidence in multiple gestations
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Management zhospitalization if severe zIV fluids zIntake and Output (strict) zNPO for 24-48 hrs. zAntiemetics zPhenothiazines (phenergan, compazine) zParenteral Nutrition zPsychotherapeutic Measures
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Second and third trimester disorders
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Second and Third Trimester Bleeding zPlacenta Previa Implantation of the placenta in the lower uterine segment zAbruptio Placenta Separation of some or all of the placenta from the uterine wall
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Placenta Previa zIncidence=1:200 deliveries zClassification ymarginal, partial or total
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Placenta Previa
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zComplete placenta previa following cesarean hysterectomy
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Risk Factors zIncreasing maternal age zMultiparity zPrior uterine scar zAssociated with breech and transverse presentations
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Symptoms zPainless bright red bleeding (p 20 wks) zRecurrent and heavier as preg progresses
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Management zDouble set up examination zUltrasound diagnosis zCS If >37 wks or fetal maturity documented unless marginal z<37 wks--expectant management
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Expectant management zBedrest zno digital or speculum exams (no tampons) zfrequent NSTs and fetal monitoring zMgSO 4 for preterm labor zbetamethasone if delivery anticipated zImmediate delivery if vaginal bleeding includes fetal blood (KOH test)
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Placental Abruption zIncidence--10% of all deliveries zTypes ypartial ycomplete yoccult (concealed,retroplacental ) zRisk factors yprior history of abruption ymaternal hypertension ysmoking or cocaine use y maternal age ymultiparity ytrauma
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Placental abruption
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Abruptio placenta zRetroplacental clot following removal of a placenta which had completely abrupted
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Symptoms zPain and hypotension (disproportionate to bleeding) zIncreased uterine tone zTetanic contractions zFetal distress
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Management zExpectant management if mild zImmediate delivery if shock and fetal distress (usually CS) zTreatment of shock zTreatment of coagulopathy (DIC)
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multiple gestation Incidence is increasing twins in 1:85; triplets in 1:85x85; etc uterus large for dates may have elevated hCG, hPL, and aFP at risk for: IUGR, Prematurity
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PREGNANCY INDUCED HYPERTENSION (PIH) diastolic BP>90mmHg (or 15 over baseline) systolic BP>140mmHg(or 30 over baseline)
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RISK FACTORS zFIRST PREGNANCY zMULTIPLE GESTATION zPOLYHYDRAMNIOS zHYDATIDIFORM MOLE zMALNUTRITION zFAMILY HISTORY zVASCULAR DISEASE
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PREECLAMPSIA AND ECLAMPSIA
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PREECLAMPSIA defined as: zHypertension or PIH zProteinuria zEdema (wt gain)
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MILD PREECLAMPSIA zHYPERTENSION (140/90) zPROTEINURIA>300mg/24 hrs zMILD EDEMA,signaled by wt gain (>2 lb/week or >6 lb/month) zURINE OUTPUT>500ml/24hrs
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SEVERE PREECLAMPSIA Any of the following symptoms: zBP>160/110 (2X, 6hrs apart, bedrest) zProteinuria.5g/24 hours (3+ or 4+ dipstick) zMassive edema zOliguria <400ml/24 hrs zIUGR in fetus zSystemic symptoms
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Systemic symptoms zPulmonary edema zheadaches zvisual changes zRUQ pain z Liver Enzymes zThrombocytopenia
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Eclampsia Occurrence of a seizure that is not attributable to other causes.
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Assessment zHistory zPhysical zLab studies
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History Document risk factors and any symptoms reported by client
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Physical zLook for edema (esp. hands and face) zBP changes zRetinal changes zhyperreflexia zclonus zRUQ tenderness
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Lab studies zBlood--CBC, lytes, BUN, Creat., uric acid zLiver function studies zCoagulation studies z 24hr Urine zHELLP syndrome yHemolysis yelevated Liver function tests yLow Platelet count
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Complications zEclamptic seizures zHELLP syndrome zHepatic rupture zDIC zpulmonary edema zrenal failure zplacental abruption zcerebral hemorrhage zfetal demise
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PIH or mild preeclampsia zHome bed rest zBP monitoring zwt and urine checks zNST’s early zUS for IUGR
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Hospital management zbedrest with BRP zIV zdaily weight zfetal movement count zmonitor reflexes zdaily NST zweekly US for AFV and IUGR zmonitor symptoms continuously
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Treatment zDelivery is the Tx of choice zBetamethasone for fetal maturity zantihypertensive therapy zanticonvulsive therapy (MgSO 4 )
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MgSO 4 Therapy zLoading dose IV 4-6 g/20min zcontinued at 2 g/hr ycheck for adverse effects xrespiratory depression diminished reflexes are expected
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intrauterine growth retardation (IUGR) definition: < 10th percentile for gestational age usually not detectable before 32-34 weeks (maximal fetal growth) incidence: 3-7% of all deliveries 12-47% of twin pregnancies complications: increased risk for perinatal asphysia, meconium aspiration, electrolyte imbalance from metabolic acidosis, polycythemia 6-8 fold increase for intrapartum and neonatal death
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IUGR Etiologies PRIMARY FETAL CAUSES (20%) decreased intrinsic growth (symmetrical IUGR ) congenital heart disease genitourinary anomalies CNS anomalies chromsomal abnormalities (trisomy 13, 18,21) viral infection (rubella, CMV),,,
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IUGR: Etiology UTEROPLACENTAL INSUFFICIENCY (80%) maternal causes deficient supply of nutrients: smoking malnutrition multiple gestations placental causes extensive placental infarctions chronic partial separation placenta previa
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POLYHYDRAMNIOS zExcessive amniotic fluid yidiopathic (60%) ymaternal (20%) xdiabetes xRh incompatibility (fetal hydrops) yfetal (20%) xneural tube defect xGI obstruction xcardiac xdwarfism
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Oligohydramnios zToo little amniotic fluid yplacental insufficiency ycardiac failure yfetal demise yfetal renal disease
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Preterm Labor Onset of contractions between 20-37 wks. With cervical dilitation difficult to discern in early stages from “false labor”
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Etiology zMaternal factors xinfections xuterine anomalies xcervical incompetence xoverdistended uterus xpremature rupture of the membranes
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zFetal factors ycongenital anomalies yintrauterine death
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Management zUltrasound for fetal wt/gest. age/position zMonitor for FHT and contractions zNitrozine test zCath for UA and Culture zTocolysis
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Tocolysis zPharmacological inhibition of uterine activity yTerbutaline (Brethine) IV, then po maintenance yMgSO 4 (sometimes used) Ineffective if labor is well established or cervix dilated to 4cm or more
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zSteroids given to accelerate fetal lung maturity (betamethasone or dexamethasone 12.5 mg. IM q 24 hrs for 48 hours
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Diabetes in Pregnancy zGestational Diabetes Mellitus (GDM) Complications--Infant: zRDS (5x normal risk) zMacrosomia and associated birth trauma zNeonatal hypoglycemia zRisk of congenital anomalies with 1st trimester hypoglycemia zIntrauterine fetal demise
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Complications to Mother zPreeclampsia zpolyhydramnios zinfection zpostpartum bleeding zcesarean section zbirth canal trauma from macrosomic infant
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Treatment Careful control of diabetes zDietary management zexercise zaccucheck QID ac and hs zmaintain fasting levels at <105mg/dl through diet or insulin zcheck for ketonuria
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Monitoring fetal wellbeing zEarly US for accurate gestational dating zUS if macrosomia is suspected zamniocentesis for fetal lung maturity zantepartum NST weekly p. 34 wks Mom should have GTT at 6 weeks pp
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Habits Misc zAlcohol zTobacco zCrack cocaine or other illicit drugs zMedications zExposure to infections
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Alcohol zMidtrimester abortion zmental retardation zbehavior and learning disorders Abstinence is best Treatment for chronic abuse
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Tobacco zLow birth weight zpremature labor zspontaneous abortions zstillbirth zbirth defects zrespiratory infections and otits in children of smoking parents
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Cocaine and other drugs zPerinatal addiction zpreterm labor zplacental abruption zcognitive and psychological difficulties Abstinence an treatment necessary
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Medications zCategory A--safe (vitamins) zCategory B--no animal effects (penicillin) zCategory C--no studies available zCategory D--evidence of risk but benefits outweigh the risks zCategory X--risks outweigh benefits
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