Core Nursing Explanation
Key Concept Analysis: This question tests the critical nursing priority for a patient receiving
Alteplase (tissue plasminogen activator, tPA) for an acute ischemic stroke. tPA is a powerful
thrombolytic (fibrinolytic) agent that dissolves blood clots to restore cerebral blood flow. Its most feared and potentially fatal complication is
intracranial hemorrhage (ICH). The nurse's primary role is vigilant monitoring for signs of this complication, which requires immediate intervention to prevent death or severe disability.
Answer Rationale:
Key Point! The correct answer is
① New onset of severe headache with nausea and vomiting. This symptom cluster is a classic, red-flag presentation for
intracranial hemorrhage. The sudden, severe headache (often described as "the worst headache of my life") coupled with nausea/vomiting indicates a rapid increase in intracranial pressure (ICP) due to bleeding into the brain. For a patient on tPA, this is a
Key Point! medical emergency requiring immediate cessation of the tPA infusion, notification of the physician, and preparation for emergency interventions like a stat CT scan and possible neurosurgical consultation.
Distractor Analysis:
Watch out for confusion! ② Blood pressure reading of 160/90 mmHg: While hypertension is a risk factor for hemorrhage and blood pressure control is crucial during tPA therapy (often kept below
185/110 mmHg), a single reading of 160/90 is not an *immediate* emergency. It requires monitoring and may need pharmacologic management per protocol, but it does not trump the signs of active bleeding.
③ Slight slurring of speech that was present on admission: This is a baseline neurologic deficit from the original stroke. Monitoring for *worsening* of neurologic status is key, but a stable, pre-existing symptom does not indicate a new, acute complication.
④ Temperature elevation to 100.2°F (37.9°C): A mild fever is common post-stroke and requires investigation and management to prevent secondary brain injury. However, it is not the most immediate life-threatening complication of tPA therapy itself.
Related Concepts: Nursing care for tPA administration involves strict eligibility screening, continuous neurologic assessments using tools like the
NIH Stroke Scale (NIHSS), and monitoring for other bleeding sites (e.g., gums, IV sites, hematuria). The principle of "
time is brain" applies both to initiating tPA rapidly and to recognizing its complications swiftly.
Concept Summary
| Concept | Explanation |
| Alteplase (tPA) | Thrombolytic drug used to dissolve clots in acute ischemic stroke. Must be given within a strict time window (often 3-4.5 hours from symptom onset). |
| Major Complication | Intracranial Hemorrhage (ICH). This is the priority nursing concern. |
| Key Assessment Findings for ICH | Sudden severe headache, nausea/vomiting, acute neurologic deterioration (e.g., decreased level of consciousness, new weakness, pupil changes), sudden hypertension. |
| Nursing Action for Suspected ICH | 1. STOP tPA infusion immediately. 2. Notify physician/rapid response team STAT. 3. Prepare for emergency CT scan. 4. Monitor vital signs and neurologic status closely. |
| Other Monitoring | Systemic bleeding (gums, urine, stool, IV sites), blood pressure control, neurologic checks q15min-1hr initially. |
Side-by-Side Comparison!
| Assessment Finding | During tPA Therapy: Implication & Priority | In General Stroke Care: Implication |
| New Severe Headache + N/V | HIGHEST PRIORITY. Suspect intracranial hemorrhage. Immediate intervention required. | Can indicate hemorrhagic transformation, worsening edema, or subarachnoid hemorrhage. Requires urgent evaluation. |
| BP 160/90 mmHg | Requires intervention per protocol (e.g., labetalol, nicardipine) to keep BP below threshold, but not the *most* immediate emergency if stable. | Hypertension is common. Needs management to reduce risk of further vascular events but allows for permissive hypertension in some cases initially. |
| Mild Fever (100.2°F) | Requires investigation (source? infection?) and treatment (antipyretics) to reduce metabolic demand on the brain. | Same implication. Fever worsens neurologic outcome. |
Anatomy, Physiology & Pharmacology Points
- Pathophysiology: Ischemic stroke causes brain cell death due to blocked blood flow. tPA works by converting plasminogen to plasmin, which breaks down fibrin in the clot.
- Risk: The drug cannot distinguish between a pathologic clot and a hemostatic plug. It can cause bleeding anywhere, but bleeding into the already injured, fragile brain vessels is the most dangerous.
- Blood-Brain Barrier: The injured blood-brain barrier in the stroke area is more susceptible to leakage and hemorrhage when exposed to thrombolytics.
Memory Tips
- Acronym: H.A.N.D.S. OFF for tPA Complications
Headache (severe, new)
Altered mental status
Nausea/Vomiting
Decreased neuro function
Sudden hypertension
OFF -> Turn the tPA infusion OFF immediately!
- Think: "New + Neuro = Notify Now." Any NEW neurological symptom or worsening during tPA infusion is an emergency.
High-Frequency NCLEX Topics
The NCLEX heavily tests
priority-setting and complication recognition. tPA therapy is a classic scenario where you must choose the finding indicating the most acute, life-threatening complication (hemorrhage) over other abnormal but less immediately dangerous findings (like elevated BP or fever). Always ask yourself: "Which finding suggests the patient is deteriorating RIGHT NOW?"
Watch Out for Question Variations!
- Shift from Symptom to Action: "The nurse notes a new severe headache in a patient receiving tPA. What is the nurse's priority action?" (Answer: Stop the infusion and notify the physician.)
- Shift to Contraindications: "Which patient history would make the nurse question the order for tPA?" (Answer: Recent major surgery, active internal bleeding, history of intracranial hemorrhage.)
- Shift to Time Management: "A patient arrives with stroke symptoms 2 hours ago. The nurse anticipates preparing which medication?" (Answer: Alteplase/tPA, emphasizing the narrow time window.)