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Medical Surgical Nursing Lecture 13 Neurology
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The nervous system consists of: Brain Spinal Cord Peripheral Nerves
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Divided system – Central Nervous System (CNS) Brain & Spinal Cord – Peripheral Nervous System (PNS) Nerves (peripheral & Cranial)
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Nervous System Controls and coordinates all parts of the body By transmission of electrical impulses
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Purpose of the Nervous System Control Coordinate Communication Stimulation of Movement
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Purpsose of the Nervous System Maintains Homeostasis – Along with the what system? Endocrine
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Neuron Basic functional unit
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Synaptic Junction Neuron connect to each other end to end – Synaptic junction – Synapse
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Central Nervous System Brain Spinal Cord Control center for entire system
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Protection Brain: – Encased by the Skull Spinal Cord – Encased in vertebral column
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The Meninges Function – Support – Protect – Nourish Dura mater Arachnoid – Cerebral Spinal Fluid Pia Mater
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Brain – 3 main areas Cerebrum – Coordination of stimuli Cerebellum – Control muscle movement Brainstem – Vital Reflexes
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Brainstem Connects brain with spinal cord – Vital reflexes – Relay for sight and hearing
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Cerebellum “Lesser brain” Controls skeletal muscles coordinated
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Spinal Cord – CNS Continuous with brain stem Extend to L-1orL-2 Lumbar Punctures – L3-4
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Peripheral Nervous System Contains – Cranial nerves – Spinal nerves Location Function – Sensory impulses from PNS CNS – Motor response from CNS PNS Key word: – Nerves
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PNS Somatic & Autonomic NS Somatic Nervous System – Conscious activities Autonomic Nervous System – Connects CNS to visceral organs – Unconscious activities – Divided Sympathetic nervous system – Fight or flight Parasympathetic nervous system – Rest & digest
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History Family member present Vaccination Major injuries Childhood illnesses Family Present illness
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Complaints specific to neurology Pain – Location – Quality – Severity – Duration – Precipitating factors – Assoc. symptoms – Exasperation / diminished pain – Onset
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Pain assessment: The 5 th vital sign
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Headaches Multiple causes Not a good indicator of neuro trouble
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Vertigo Sensation of moving around in space or objects moving around them
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Paresthesia Definition – Unusual sensation Examples – Numbness – Tingling – Burning Assessment – ? Weak – ? Intermittent or constant
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Vision Dysfunction Diplopia – Double vision Clarity Nystagmus – Eye twitching
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Disturbances in… Thinking Memory Personality
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Nausea and vomiting Projectile
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Assessing Cerebral Function - PE Mental status Intellectual function Thought content Emotional status Perception Motor ability Language ability
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Level of Consciousness Alert – Open eyes spontaneously Lethargic – Opens eyes to verbal stimuli – Slow to respond, but appropriate Stupor – Responds to physical stimuli with moans and groans
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Semi Comatose – Responds to painful stimuli Coma – Unresponsive except to severe pain – Absent Protective reflexes
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Types of Stimuli response Voice Touch Shaking Voice + Shaking Noxious/painful stimuli
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Nature of response Eye opens Remove stimuli Abnormal posturing No response
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Glasgow Coma Scale Eye Opening – Spontaneous – 4 – To speech – 3 – To pain – 2 – Nil – 1
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Glasgow Coma Scale Best Motor Response – Obeys -6 – Localizes – 5 – Withdraws – 4 – Abnormal flexion – 3 – Extension response – 2 – Nil - 1
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Glasgow Coma Scale Verbal response – Oriented – 5 – Confused conversation – 4 – Inappropriate words – 3 – Incomprehensible sounds – 2 – Nil - 1
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Glasgow Coma Scale A strong predictor of outcome 13: mild brain injury 9-12: Moderate brain injury < 8: Severe brain injury (coma)
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Sample Question The nurse is caring for an adult client who was admitted unconscious. The initial assessment utilized the Glasgow Coma Scale. The nurse knows that the Glasgow Coma Scale is a systemic neurological assessment tool that evaluates all of the following EXCEPT A.Eye opening B.Motor response C.Pupillary reaction D.Verbal performance
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What is the lowest score you can get on the GCS? A.0 B.1 C.3 D.5 E.None of the above
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What is the highest score you can get on a GCS? A.0 B.3 C.13 D.15 E.None of the above
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Orientation x 3 – Person – Place – Time
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General Appearance How do they look? – Grooming – Dress – Aids – Eye deviation – Skin
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Vital Signs Temperature – With head trauma increased
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Vital Signs Pulse – Increased ICP Bradycardia
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Vital Signs Respirations – Ataxic Damage to medulla – Cheyne-stokes Lesion deep in cerebral cortex – Hyperventilation Metabolic problems
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Vital Signs Blood Pressure – Orthostatic hypotension > 20mmHg cerebral ischemia
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Vital Signs Pulse Pressure formula: – Systolic – diastolic 120 ------=? 80
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Vital Signs Pulse Pressure – Systolic – diastolic 120 ------=40 80 – Normal Pulse pressure = 40 – Widening pulse pressure = Increased ICP
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Neuro Checks LOC Pupils – PERRLA Pupils Equal Round Reactive to Light Accommodation
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Neuro Check Pupils – Anisocoria Inequality in the size of the pupils – Nystagmus – Progressive dilation Increase ICP – Fixed & dilated Poor prognosis
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Computer Tomography Scan - CT X-rays Distinguishes tissue density – Tumors
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Computer Tomography Scan - CT Nursing Considerations – Explain procedure 30-60 minutes Lying still – If contrast medium is used for iodine & shellfish allergies NPO Push fluids after procedure watch for S&S of ICP
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Magnetic Resonance Imaging: MRI Description Magnetic field + radio waves Used to ID: – Edema – Hemorrhage – Tumors
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Magnetic Resonance Imaging: MRI Nursing Considerations Remove all metal Relaxation techniques / Claustrophobia Duration: – 45-60 min Lay flat & motionless
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Nervous System Controls and coordinates all parts of the body By transmission of electrical impulses
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Cerebral Cortex / Cerebrum CNS produces electrical waves
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Electroencephalography (EEG) Measures electrical impulses of the brain – brain waves Electrodes applied to the scalp Used to diagnosis – Seizures – Coma – Brain death Obtain an baseline – Quiet & dark Stimulation – Flashing lights
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Electroencephalography (EEG) Duration: 1 hour seizures – sleep deprivation Hold meds – anti seizure meds – Tranquilizers – Stimulants – depressants No caffeine OK to eat
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Lumbar Puncture Description Into Subarachnoid space @ L 3-4 level Used to – Extract CSF – Test Spinal fluid pressure – Introduce antibiotics dyes anesthesia
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Lumbar Puncture Nursing Considerations Pre-procedure – Side lying with legs pulled close to chin – Do not move – Painful – pressure – Shooting pain down leg – 10 minutes
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Lumbar Puncture Post-procedure – Bed rest – Fluid (unless…) – Observe for S/E
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I-ICP I-ICP Cycle – I-ICP – pressure – cerebral perfusion – Ischemia – edema – Death
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I-ICP Early S&S – #1 Alt LOC restlessness or confusion – H/A – Pupil changes – Weakness on one side
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I-ICP - Late S&S Stupor coma Pulse –– Resp – & Erratic BP –– Temp –– Projectile vomiting
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I-ICP Late S&S – Abnormal posturing – Loss of protective reflexes
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Goals of I-ICP management Decrease the Pressure – edema
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I-ICP management Decrease Edema – Osmotic diuretic
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I-ICP management Decrease edema – Corticosteroids Anti-inflammatory
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I-ICP management Decreasing edema – Fluids – HOB – Oxygen
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Seizures Definition – Abnormal motor, sensory autonomic or psychic activity resulting from sudden excessive discharge from cerebral neurons
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Seizure video in bed http://www.youtube.com/w atch?feature=player_detailp age&v=Nds2U4CzvC4 http://www.youtube.com/w atch?feature=player_detailp age&v=Nds2U4CzvC4 http://vimeo.com/3428474 http://www.google.com/url ?url=http://www.healthgur u.com/content/video/watch /100663/10_Truths_About_ Epilepsy%3FHG_Google_Vid eo_Sitemap%3D&rct=j&sa= X&ctbm=vid&ei=PZbITt7cLs 3diAKU_PzADw&ved=0CGc QuAIwBDge&q=seizure+ton ic+clonic&usg=AFQjCNGdre dGS6dFX9kRopvQ9nC91kBK rw&cad=rja
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Seizures Classification – Partial – Seizure that begins in one part of the brain Simple – Awareness – Memory – Consciousness
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Seizures Classification – Partial Simple Complex – Loss of » Awareness » Memory » Consciousness
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Seizures Classification – Generalized – Seizure that involves electrical discharges in the whole brain Absence Seizure – Period of staring Tonic-Clonic Seizure
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Seizures Seizure activity – Tonic Phase Rigidity – Clonic phase Jerking
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Seizures Characteristics – Post-seizure / postictal Recover period Deep sleep Head ache Weak Nausea Muscle soreness Depression Tired
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Seizures Medical management – Anti-convulsants
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Seizures Nrs Management w/ anticonvulsants – Do not stop abruptly seizures – Monitor levels – Take regularly – Alcohol only in moderation
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Seizures Before Seizure – At risk for injury Padded side rails Suction machine in room
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Seizures During a seizure Safety – Ease to floor – Protect the head – Turn to side – Loosen clothing – In bed? Remove pillow Side rails up – Do not Insert anything in mouth restrain – Stay with pt Support client – Privacy
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Seizures Observe & document – 1 st – Movement – Duration – Unconsciousness – Post seizure behavior
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Seizures After a seizure – Document – At risk for Aspiration Vomiting
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Seizures –VS –Check mouth –Clean client –Allow to “sleep it off” Post Seizure Nursing care – Side lying – Padded side rails – stimulation Dim lights Noise
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Cerebrovascular accident AKA CVA Stroke Brain attack
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CVA: Pathophysiology Disruption of blood flow to part of the brain Ischemia Infarction ICP
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CVA: Common Causes Ischemic – Thrombi – Emboli
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CVA: Etiology Hemorrhage – Rupture of the cerebral blood vessel D/T: – HTN
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CVA: Risk Factors Changeable Smoking Obesity HTN Sedentary life Stress fat diet Na diet Substance abuse Diabetes mellitus Non-changeable Age Gender Family history Race
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CVA: Risk Factors Which is the most important risk factor for a stroke? A.Smoking B.Weight C.Diet D.HTN E.Stress F.Substance Abuse
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CVA: Risk Factors What is the number one cause of CVA in a younger patient? A.Smoking B.Weight C.Diet D.HTN E.Stress F.Substance Abuse
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CVA: Clinical manifestations S&S depend on: 1.Location 2.Size
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CVA: Clinical Manifestations Alt. LOC H/A Aphasia Seizures Vision disturb Labile emotion Hemiparesis – Weakness Hemiplegia – Paralysis
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Hemorrhagic Stroke Usually more severe with a longer recovery period than ischemic stroke
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Hemorrhagic Stroke Common Cause – HTN
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CVA: diagnostic findings CT / MRI
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CVA: Medical Management Focus on Cause & Control #1 cause = – Hypertension – Anti-hypertensives
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CVA: Rx - HTN Beta-blockers – Action Block sympathetic response
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CVA: Medical Management Diet – Sodium – Fat – Potassium – Stimulants – Fluids
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CVA: Medical Management Prevent clot formation – Meds / anticoagulants
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CVA: Medical Management Prevent clot formation – Non-Rx Ted hose ROM Isometric exercise
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CVA: Medical Management Thrombolytic agents – Action Break down thrombi – S/E Hemorrhage
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CVA: Medical Management Prevent Seizures – Anti-convulsants – Precaution – stimuli
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CVA: Medical Management ICP – O2 – Position HOB – Activity Rest – Meds Diuretics Glucocorticoids – Monitor BP
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CVA: Medical Management Nutrition – NGT
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CVA: Medical Management Monitor for complications – VS – I&O – Labs Na & K Glucose PT/PTT – Pulse oximetry
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CVA: Medical Management Prevent complications ROM Isometric exercise Pain Control
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CVA: NRS management Risk for injury r/t seizures r/t repeat CVA r/t unilateral neglect r/t falls – Padded side rails – Call light – Assist w. amb. – Suction – Items w/in reach – Clear path – H2O temps – Turn & position q2hr
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CVA: NRS management Alt. nutrition r/t impaired swallowing Motor deficits Impaired judgment – SLP – Swallow eval – HOB high fowlers – Straws – no – Thick liquids – Swallow twice – pocketing food – Talk & eat – NO – Unaffected side of tongue – gag – Small meals – High texture food
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CVA: NRS management Alt. Mobility r/t neuro deficits – Begin on admit – Turn q2hr – ROM – Splints – Footboards – Built-up utensils – Raised toilet – Exercises
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CVA: NRS management Impaired Communication r/t aphasia – SLP – Give the client Time – Anticipate needs – Call bell – Face patient – Eye contact – Yes/No ? – ID methods – Gestures – Visual aids
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CVA: NRS management Self-Care Deficit Eating – Non-skid mats – Stabilizer plates – Plate guards – Wide grip utensils
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CVA: NRS management Self-Care Deficit Bathing & Grooming – Long handle sponge – Grab bars – Non-skid mats – Hand held showers – Electric razor – Shower seat
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CVA: NRS management Self-Care Deficit Toileting – Raised seat – Grab bars
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CVA: NRS management Self-Care Deficit Dressing – Velcro – Elastic shoelaces – Long-handle shoehorn
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CVA: NRS management Self-Care Deficit Mobility – Canes – Walkers – Wheelchair – Transfer devices
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CVA: NRS management Unilateral neglect Unaffected side – Personal items – Approach – Door face
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TIA: Transient Ischemic Attack Short reversible ischemic event Duration – < 24 hrs No permanent neuro deficit Warning!
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