Neurologic Disorders NCLEX Study Notes

Spinal Surgery and Post-Operative Nursing Care

  • Cervical Fusion Mechanics and Indications:

    • Cervical fusions are performed to stabilize the spinal column and protect the spinal cord.

    • Indicated when spinal instability or severe compression creates a substantial risk of neurologic injury.

  • Post-Operative Nursing Priorities:

    • Urinary Elimination: Assess the client's ability to void after the urinary catheter is removed. Acute pain and the requirement to remain flat in bed make voiding difficult.

    • Ambulation: Encourage and assist with walking as ordered. Early mobility restores normal bowel and bladder function.

    • Positioning: Utilize the log-rolling technique when repositioning or turning to avoid excessive spinal movement and prevent spinal compromise.

    • Incision and Cerebrospinal Fluid (CSF) Leak Monitoring: Inspect the surgical incision for clear drainage. Clear drainage after spinal surgery indicates a CSF leak.

    • Trauma Considerations: Recognize that clear drainage from the nose (rhinorrhea) or ears (otorrhea) following head or facial trauma also signals potential CSF leakage.

Transient Ischemic Attack (TIA) and Cerebrovascular Accident (Stroke)

  • Transient Ischemic Attack (TIA):

    • Definition: A temporary interruption of cerebral blood flow causing stroke-like neurologic symptoms that completely resolve.

    • Clinical Significance: Serves as an urgent warning sign. The resolution of symptoms does not mean the underlying vascular pathology is permanently resolved.

    • Etiology: Caused by a transient embolus/clot or acute vascular spasm.

    • Management: Treat stroke-like presentation urgently and perform comprehensive diagnostic evaluation to identify the underlying cause.

  • Classification of Stroke (Cerebrovascular Accident):

    • Ischemic Stroke: Caused by vascular blockage resulting in compromised cerebral perfusion.

    • Thrombotic Stroke: Clot formation develops directly at the site of vascular occlusion.

    • Embolic Stroke: A clot or embolus originates elsewhere in the vascular system and travels to occlude a cerebral vessel.

    • Hemorrhagic Stroke: Extravasation of blood into or surrounding brain tissue. Etiologies include aneurysm rupture, severe uncontrolled hypertension, or arteriovenous malformation (AVM).

  • Comprehensive Stroke Assessment Protocols:

    • Time of Onset / Last Known Normal (LKN): Establish the exact time of symptom onset or LKN time. If a client awakens with stroke symptoms, LKN is established as the time they were last known normal prior to sleeping.

    • Neurologic Evaluation: Assess level of consciousness (LOC) and complete neurologic status.

    • Glycemic Check: Perform immediate blood glucose evaluation to rule out hypoglycemia, which can mimic acute stroke manifestations.

    • Coagulation Studies: Obtain PT/INR and other coagulation panels to identify bleeding or clotting disorders.

    • Diagnostic Neuroimaging: Utilize CT scan, CT angiography (CTA), CT perfusion, and MRI/MRA to evaluate bleeding, site of vessel blockage, and overall cerebral tissue perfusion.

  • Hemispheric Localization and Visual Deficits:

    • Left Cerebral Hemisphere Deficits: Impairments in speech/language (aphasia/dysphasia), mathematical processing, and analytic problem-solving capabilities.

    • Right Cerebral Hemisphere Deficits: Impairments in visual-spatial awareness, body-position awareness/proprioception, and overall cognition/orientation.

    • Visual Field Cut (Hemianopsia): Introduces a significant safety and fall risk. Teach the client to scan the environment from side to side.

  • Stroke Risk Factors:

    • Primary Modifiable Risk Factors: Hypertension, diabetes mellitus, obesity, tobacco smoking/substance use, and elevated serum cholesterol levels.

    • Instability Indicator: Uncontrolled diabetes or uncontrolled hypertension is particularly alarming because "uncontrolled" status signals vascular instability.

Thrombolytic Therapy: Alteplase (tPA) for Ischemic Stroke

  • Mechanism and Indications:

    • Alteplase is a thrombolytic agent administered to eligible clients presenting with acute ischemic stroke within the appropriate therapeutic treatment window.

    • Rapid administration restores cerebral tissue perfusion, limiting brain injury.

  • Pre-Administration Interventions:

    • Complete necessary invasive procedures prior to initiation (e.g., placement of urinary catheters or nasogastric [NG] tubes if clinically indicated).

    • Establish reliable IV access.

  • Post-Administration Interventions and Monitoring:

    • Minimize all unnecessary invasive procedures following administration, as tissue trauma can cause persistent bleeding.

    • Perform continuous monitoring of vital signs and neurologic status; maintain vigilance for signs of systemic or intracranial hemorrhage.

  • Hemorrhage Protocol During Infusion:

    • If significant bleeding or intracranial hemorrhage is suspected while alteplase is actively infusing, the immediate priority action is to STOP the infusion first.

    • After stopping the infusion, immediately notify the primary provider or rapid response team.

  • Blood Pressure Control:

    • Blood pressure must meet required treatment parameters prior to alteplase administration and must be tightly monitored and controlled afterward.

    • Elevated blood pressure increases the risk of intracranial hemorrhage.

Increased Intracranial Pressure (ICP) Management

  • Physiologic Values and Clinical Indicators:

    • Expected Normal ICP Range: 10 to 15 mmHg10\text{ to }15\,\text{mmHg}. Pressure measurements exceeding this range indicate increased ICP.

    • Earliest Key Sign: A change or decline in level of consciousness (LOC).

    • Late and Severe Deterioration Signs: Brainstem compression and brain herniation.

    • Midline Shift: Indicates critical lateral brain displacement; failure to intervene allows displacement to progress to downward herniation.

  • Interventions to Decrease ICP:

    • Elevate the head of the bed (HOB) to approximately 30∘30^\circ (or as ordered).

    • Maintain head and neck in a strictly neutral, midline alignment.

    • Ensure adequate oxygenation by adhering to ordered oxygen parameters.

    • Avoid sudden or extreme hip flexion or neck flexion.

    • Minimize external stimuli: reduce noise, stress, and unnecessary handling to maintain a calm environment.

  • Factors and Actions That Increase ICP:

    • Hypercarbia (elevated arterial CO2\text{CO}_2 concentration), coughing, neck flexion, hip flexion, and Valsalva maneuver or straining.

    • Lumbar Puncture Contraindication: Lumbar puncture is contraindicated when increased ICP is suspected because pressure shifts can precipitate downward brain herniation.

Traumatic Brain Injury (TBI) and Coup-Contrecoup Mechanics

  • Coup-Contrecoup Mechanism:

    • Coup Injury: Damage occurring directly at the primary site of impact.

    • Contrecoup Injury: Damage occurring on the side directly opposite the initial impact site as the brain rebounds within the skull.

    • Kinematics: Associated with acceleration-deceleration kinetic forces.

    • Common Causative Events: Motor vehicle crashes, falls, and high-impact collisions.

  • Clinical Complications:

    • Increased ICP represents the primary cause of neurologic deterioration and mortality following head trauma in clients who survive initial hospital arrival.

  • Spinal and Head Positioning Precautions:

    • Maintain cervical spine (C-spine) precautions when indicated.

    • Keep head midline and neutral, elevating HOB as ordered.

Subdural Hematoma

  • Onset and Clinical Timeline:

    • Subdural hematomas often develop gradually after trauma and may not become clinically obvious for weeks or months.

  • High-Risk Population and Etiology:

    • Older Adults: Age-related brain atrophy increases subdural spatial volume, allowing blood to collect slowly before producing overt symptoms.

    • Major Risk Factors: Advanced age/brain atrophy, chronic alcohol use, concurrent anticoagulant therapy, and head trauma/falls.

  • Classic Presentation:

    • A history of a prior fall or minor head injury, followed weeks or months later by progressive headache, confusion, or other insidious neurologic changes.

Alzheimer's Disease: Stages, Nursing Care, and Pharmacology

  • Clinical Stages:

    • Early Stage: Short-term memory impairment, difficulty recalling new information, mild cognitive and judgment changes; client remains independent with Activities of Daily Living (ADLs).

    • Moderate Stage: Depression, agitation, disorientation to time, place, or event, wandering behaviors, sleep architecture disruption (sundowning), and loss of ability to manage financial matters.

    • Late Stage: Severe cognitive impairment, profound loss of verbal communication, complete functional dependence, ultimately leaving the client bedridden and incapacitated.

  • Nursing Care and Communication Strategies:

    • Environmental Management: Maintain structure and a consistent routine. Avoid unnecessary room or environmental changes.

    • Wandering Mitigation: Place client in a quiet area situated away from obvious exits to reduce wandering risk.

    • Routine Changes: Explain changes in routine prior to occurrence; repeat explanations as needed.

    • Orientation Approaches: Use reality orientation during the early stage of disease. Use validation therapy in moderate-to-late stages rather than arguing or repeatedly correcting the client's reality.

    • Communication Techniques: Ask simple, direct questions; provide instructions one at a time; utilize gestures and picture cues; limit choices.

    • Cognitive Potential: Never assume a person with dementia cannot understand verbal communication.

    • Needs Identification: Anticipate basic physiological needs and interpret nonverbal communication.

  • Pharmacologic Interventions:

    • Cholinesterase Inhibitors (e.g., Donepezil): Administered to treat symptoms and slow cognitive decline; does NOT cure Alzheimer's disease. Monitor for adverse effects including bradycardia, dizziness, and fall risk; exercise caution in clients with underlying cardiac disease.

    • NMDA Receptor Antagonists (Memantine): Utilized in moderate-to-severe stages to slow clinical symptom progression; does NOT cure the disease.

  • Caregiver Support Strategies:

    • Encourage utilization of formal respite care services, personal rest/recreation away from caregiving duties, establishment of realistic expectations, acceptance of external assistance, engagement with community resources, and integration of supportive cultural/spiritual practices.

Parkinson's Disease: Manifestations, Pharmacology, and Nursing Interventions

  • Pathophysiology and Cardinal Symptoms:

    • Pathology: Associated with depletion of dopamine leading to impaired voluntary motor control.

    • Four Cardinal Features (TRBP):

    • Tremor (resting tremor).

    • Rigidity (muscle stiffness).

    • Bradykinesia / Akinesia (slowness or absence of voluntary movement).

    • Postural Instability (impaired balance).

  • Functional and Safety Implications:

    • Shuffling gait and impaired balance produce a major risk for falls.

    • Motor Impairment of Speech and Swallowing: Reduced voluntary motor control affects swallowing and speech; allow extra time for responses.

    • Nutritional Support: Provide high-protein, high-calorie foods when required to maintain body weight.

  • Dopamine Agonist Pharmacotherapy:

    • Adverse Effects: Orthostatic hypotension, dizziness, hallucinations, and excessive sleepiness/drowsiness.

    • Nursing Education: Teach slow position changes and fall prevention strategies. Instruct client to avoid driving or operating heavy machinery if significant sleepiness or impairing effects occur.

  • Monoamine Oxidase Inhibitors (MAOIs):

    • Dietary Restrictions: Avoid tyramine-rich foods (aged cheeses, smoked meats, fermented foods, and specific alcoholic beverages).

    • Discontinuation Timing: Tyramine dietary restrictions may need to continue for a prescribed duration even after MAOI therapy is discontinued.

Migraine Management

  • Nursing Priorities and Interventions:

    • Primary Nursing Goal: Pain management.

    • Nonpharmacologic Measures: Place client in a quiet, dark environment to diminish light and sound stimulation when photosensitivity or phonophobia is present.

    • Neurologic Assessment: Recognize that certain migraines present with neurologic symptoms; evaluate carefully for new or atypical deficits.

Seizure Management and Antiseizure Medications

  • Interventions During an Active Seizure:

    • Time Measurement: Immediately TIME the seizure duration.

    • Injury Prevention: Protect the client from injury; lower them safely to the floor/surface if standing.

    • Airway Positioning: Turn client to the side when possible to maintain airway patency and reduce aspiration risk.

    • Environmental Safety: Remove nearby objects that could cause injury.

    • Restraint Prohibition: Do NOT restrain the client.

    • Oral Insertion Prohibition: Do NOT put anything in the mouth, including a tongue blade.

    • Suction Safety: Suction secretions ONLY when it can be done safely without forcing equipment past clenched teeth.

  • Post-Seizure (Postictal) Interventions:

    • Assessment: Continuously monitor airway, breathing, vital signs, neurologic status, level of consciousness, apnea, and incontinence.

    • Recovery Positioning: Keep client on their side as appropriate and allow uninterrupted rest/recovery.

    • Documentation: Document beginning and ending times and describe all manifestations that occurred during the seizure.

  • Antiepileptic Drug (AED) Therapy:

    • Terminology: AED refers to Antiepileptic Drug in this context (not automatic external defibrillator).

    • Adherence Education: Do NOT stop AEDs simply because seizures have stopped; seizure control indicates medication efficacy.

    • Dosing Consistency: Take medications consistently and at prescribed times to maintain therapeutic blood levels.

    • Common Triggers: Stress, lack of sleep, and missed doses are common seizure triggers.

  • Hydantoin Derivatives (Phenytoin / Fosphenytoin):

    • Oral Hygiene Emphasis: Emphasize good oral hygiene because phenytoin can cause gingival hyperplasia.

    • Laboratory Monitoring: Follow prescribed laboratory monitoring and therapeutic drug-level appointments.

Meningitis

  • Pathophysiology and Risk:

    • Definition: Inflammation of the meninges surrounding the brain and spinal cord.

    • Intracranial Pressure Risk: Because inflammation can affect intracranial pressure, monitor continuously for neurologic deterioration and signs of increased ICP.

    • Prevention Protocol: Prevention includes recommended routine vaccination.

NCLEX Priority Rules Summary

  • Stroke Priority: Determine Last Known Normal (LKN) time and check blood glucose early.

  • tPA Hemorrhage Emergency: If hemorrhage is suspected, STOP infusion first →\rightarrow notify provider.

  • Increased ICP Earliest Sign: Change in Level of Consciousness (LOC).

  • Increased ICP Intervention Summary: HOB elevated 30∘30^\circ, head neutral/midline, maintain oxygenation, calm environment; avoid hip/neck flexion, coughing, and Valsalva straining.

  • Seizure Emergency Priority: TIME the seizure →\rightarrow PROTECT from trauma →\rightarrow Turn to SIDE →\rightarrow Maintain AIRWAY; Nothing in mouth; No restraints.

  • Subdural Hematoma Profile: Older adult + chronic alcohol use + anticoagulant therapy + head trauma; delayed onset of symptoms.

  • Alzheimer's Communication Rule: Early stage = Reality orientation; Later stage = Validation.

  • Parkinson's Disease Quadrad: Dopamine deficiency + TRBP (Tremor, Rigidity, Bradykinesia, Postural instability) →\rightarrow FALL RISK.

  • Phenytoin Precaution: Requires meticulous oral care due to gingival hyperplasia.