Ischemic Stroke nursing care: what to assess and what to do first

The pathophysiology in one pass

An ischemic stroke is a blockage, usually a thrombus or embolus, cutting off blood flow to part of the brain. The tissue at the core of the blockage dies within minutes. Around it sits the penumbra, tissue that is starved but still salvageable if flow returns quickly enough.

That penumbra is the whole rationale for time-critical treatment. Every minute without perfusion, more penumbral tissue converts to infarct. This is why the stroke team clock starts at symptom onset and why a delay at any point in the chain, from the ambulance to the CT scanner, has a measurable cost in brain tissue.

Assessment findings that matter

The presentation depends on which vessel is occluded. A middle cerebral artery stroke gives contralateral face and arm weakness, aphasia if it is the dominant hemisphere, and homonymous hemianopia. A posterior circulation stroke can present with vertigo, ataxia, and diplopia, findings that are easy to mistake for something benign.

Use a stroke scale, most commonly the NIH Stroke Scale, to quantify deficits and track change over time. Check blood glucose immediately: hypoglycemia mimics stroke and is reversible in minutes, so it must be ruled out before anything else.

The single most important piece of history is the last known well time. This is not when the patient was found unresponsive or when a family member called. It is the last time someone can confirm the patient was neurologically normal. If a patient wakes with a deficit, the last known well time is when they went to sleep, not when they woke.

What the exam asks about this

NCLEX questions on ischemic stroke test whether you can identify the tPA window correctly, and they will try to trip you with a time gap between symptom onset and arrival. A question describing a patient found on the floor by a neighbor is testing whether you know to ask when the patient was last seen normal, not when they were discovered.

Expect questions on absolute contraindications to tPA: recent major surgery, active bleeding, a history of intracranial hemorrhage, and severe uncontrolled hypertension. You will also be tested on positioning, glucose control, and the sequence of actions in the first hour, since ischemic stroke questions reward speed and correct order, not just correct facts.

Nursing interventions in priority order

Airway, breathing, and circulation come first, as with any acute presentation. Obtain a rapid glucose, establish IV access, and get the patient to CT for a non-contrast scan without delay, since this determines whether the stroke is ischemic or hemorrhagic and whether thrombolysis is even an option.

Confirm and document the last known well time before anything else happens on the timeline. If the patient falls within 4.5 hours of that time and has no contraindications, tPA administration becomes time-critical. Keep the patient NPO until a swallow screen is completed, keep the head of the bed flat or at a slight elevation per protocol, and avoid inserting NG tubes, indwelling catheters, or arterial lines before tPA if it is likely to be given, since these increase bleeding risk.

Medications and monitoring

Alteplase, given within the 4.5-hour window and after contraindications are excluded, is the standard thrombolytic. Dosing is weight-based, with 10 percent given as a bolus and the remainder infused over 60 minutes. After administration, blood pressure must be kept below 180/105 mmHg, and neurological checks are done every 15 minutes for the first two hours, then hourly.

Watch closely for signs of intracranial hemorrhage post-tPA: sudden headache, worsening neurological status, or a drop in level of consciousness. If these appear, stop the infusion immediately and notify the physician. Antiplatelet and anticoagulant medications are held for at least 24 hours after tPA.

When to escalate

Escalate immediately for any new decline in the NIH Stroke Scale score, a sudden drop in Glasgow Coma Scale, or signs of increasing intracranial pressure such as widening pulse pressure and bradycardia. These can signal hemorrhagic transformation of the infarct, a recognized complication after reperfusion.

Also escalate if blood pressure rises above the treatment threshold during or after tPA, if the patient develops new-onset seizure activity, or if swallow function deteriorates and aspiration risk increases. Large vessel occlusions identified on CT angiography may need transfer for mechanical thrombectomy, which extends the treatment window beyond 4.5 hours in select patients, so know your facility's transfer protocol.