Guide to Stroke: Types & Nursing Care

Stroke: A Time-Critical Emergency

Stroke, or Cerebrovascular Accident (CVA), is the sudden death of brain cells due to lack of oxygen, caused by blockage of blood flow or rupture of an artery. It is a medical emergency where “Time is Brain”—approximately 1.9 million neurons are lost every minute treatment is delayed. For nursing students, mastering stroke care is essential. It requires rapid assessment skills, precise hemodynamic monitoring, and holistic rehabilitation planning. This guide dissects the types of stroke, acute interventions like tPA, and long-term nursing management, elevating your nursing practice and academic writing.

According to the Centers for Disease Control and Prevention (CDC), stroke is a leading cause of serious long-term disability. The distinction between ischemic and hemorrhagic pathology dictates every aspect of care—from the target blood pressure to the permissibility of anticoagulation.

Pathophysiology: Ischemic vs. Hemorrhagic

Understanding the mechanism of injury is the first step in safe nursing care.

Ischemic Stroke (87% of Cases)

Caused by a blockage in a cerebral artery.
Thrombotic: A clot forms directly at the site of a narrowed vessel (atherosclerosis). Often preceded by a Transient Ischemic Attack (TIA).
Embolic: A clot travels from elsewhere (usually the heart, due to Atrial Fibrillation) and lodges in a cerebral artery. Onset is sudden and severe.
Key Concept: The penumbra is the zone of reversible tissue injury surrounding the infarcted core. Rapid reperfusion aims to save this tissue.

Hemorrhagic Stroke (13% of Cases)

Caused by bleeding into the brain tissue or subarachnoid space.
Intracerebral Hemorrhage (ICH): Bleeding within the brain parenchyma, often due to uncontrolled hypertension.
Subarachnoid Hemorrhage (SAH): Bleeding into the space between the arachnoid and pia mater, often due to a ruptured aneurysm (“Worst headache of my life”).

Rapid Assessment: BE FAST and NIHSS

Nursing assessment must be swift. The BE FAST algorithm identifies signs: Balance (loss of), Eyes (blurred vision), Face (drooping), Arms (weakness), Speech (slurred), Time (call 911).

In the clinical setting, the National Institutes of Health Stroke Scale (NIHSS) is the standard assessment tool. It quantifies stroke severity (0-42) by evaluating LOC, gaze, visual fields, facial palsy, motor function, ataxia, sensation, language, dysarthria, and extinction/inattention. A score change of >2 points indicates significant deterioration or improvement.

Diagnostic Imaging Priorities

Immediate imaging is non-negotiable to determine the type of stroke and appropriate intervention.

• Non-Contrast CT Head: The “gatekeeper” exam. It is fast and primarily rules out hemorrhage. It may not show early ischemic changes but confirms if tPA is safe to administer (no blood).
• MRI (DWI/PWI): Diffusion-Weighted Imaging (DWI) is highly sensitive for ischemic stroke, detecting infarction within minutes. It is preferred for smaller or posterior circulation strokes but takes longer than CT.
• CT Angiography (CTA): Visualizes blood vessels to identify Large Vessel Occlusions (LVO) suitable for mechanical thrombectomy.

Acute Management Protocols

The priority is determining the type of stroke via non-contrast CT scan to rule out hemorrhage.

Ischemic Stroke Interventions

• tPA (Alteplase): The “clot buster.” Must be administered within 3 to 4.5 hours of symptom onset. Strict exclusion criteria apply (recent surgery, active bleeding, uncontrolled HTN).
• Mechanical Thrombectomy: Endovascular removal of the clot for large vessel occlusions, effective up to 24 hours in select patients.
• Permissive Hypertension: Allowing BP up to 220/120 mmHg (if no tPA) to force blood into the ischemic penumbra.

Hemorrhagic Stroke Interventions

• Strict BP Control: Systolic BP usually maintained < 140-160 mmHg to prevent hematoma expansion.
• Reversal of Anticoagulation: Administering Vitamin K, FFP, or specific reversal agents (e.g., Andexxa) if the patient is on blood thinners.
• Surgical Decompression: Craniotomy or clipping/coiling of aneurysms.

Managing Critical Complications

Vigilant monitoring in the first 24-72 hours is vital to detect life-threatening complications.

Increased Intracranial Pressure (ICP)

Cerebral edema peaks 3-5 days post-stroke. Nurses must monitor for Cushing’s Triad: bradycardia, hypertension (widening pulse pressure), and irregular respirations. Interventions include keeping the Head of Bed (HOB) > 30 degrees and administering Mannitol or hypertonic saline as ordered.

Hemorrhagic Transformation

An ischemic stroke can convert to a hemorrhagic one, especially after tPA administration. Any acute neurological decline, new headache, or nausea/vomiting necessitates an immediate repeat CT scan and cessation of antithrombotics.

Nursing Care and Rehabilitation

Post-acute care focuses on preventing complications and maximizing function.

Dysphagia Screening

Swallowing difficulty puts patients at high risk for aspiration pneumonia. Nurses must perform a bedside swallow screen before giving any oral intake. If failed, keep NPO and consult Speech Therapy.

Communication Strategies

Aphasia affects language processing.
Broca’s (Expressive): Patient understands but struggles to speak. Use picture boards; allow time.
Wernicke’s (Receptive): Patient speaks fluently but words lack meaning (“word salad”); comprehension is impaired. Use simple gestures and short commands.

Mobility and Safety

Hemiparesis (weakness) or Hemiplegia (paralysis) on one side increases fall risk. Use gait belts, position the patient on the affected side (to prevent shoulder subluxation), and implement ROM exercises to prevent contractures.

Psychosocial Impact: Post-Stroke Depression

Post-Stroke Depression (PSD) affects approximately one-third of stroke survivors. It is not just a reaction to disability but a physiological result of brain injury. PSD significantly hinders rehabilitation adherence and functional recovery. Nurses should screen patients using tools like the PHQ-9 and advocate for early psychiatric intervention or counseling.

Secondary Prevention

Preventing recurrence is vital. Refer to the American Stroke Association Guidelines for detailed secondary prevention protocols.

• Antiplatelets: Aspirin or Plavix for non-cardioembolic ischemic stroke.
• Anticoagulants: Warfarin or DOACs (e.g., Apixaban) for Atrial Fibrillation.
• Statins: High-intensity therapy for atherosclerosis.
• Carotid Endarterectomy: Surgery to remove plaque if carotid stenosis > 70%.

FAQs: Stroke Nursing

Conclusion

Stroke care is a dynamic continuum from the hyper-acute “Golden Hour” to lifelong rehabilitation. By understanding the distinct pathophysiology of ischemic versus hemorrhagic events, accurately using the NIHSS, and implementing rigorous safety protocols, nurses significantly influence patient outcomes. Your vigilance prevents complications and bridges the gap between survival and recovery.