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Pharmacological TherapiesClot-buster → bleeding is #1 risk

Alteplase (tPA)NCLEX cheat sheet

Alteplase is a thrombolytic (tissue plasminogen activator) that dissolves existing clots by converting plasminogen to plasmin.

20 key facts 3 practice questions Reviewed Oct 2026
The 1-minute sheetCinnaRN

Uses

  • Acute ischemic stroke, STEMI, PE
  • Converts plasminogen → lyses clot

Window

  • Stroke: within 3-4.5 hrs onset
  • Must r/o hemorrhage on CT first

Avoid

  • Recent surgery, bleed, head trauma
  • Active bleed, BP > 185/110

Report

  • ↓ LOC, severe HA → intracranial bleed
  • Bleeding gums, blood in urine/stool

Do

  • Neuro checks, avoid IM/punctures
  • Bedrest, minimal handling
Red flag to remember

Report sudden severe headache, decreased level of consciousness, or new neurologic deficits, which signal intracranial hemorrhage, and stop the infusion.

Before you read

Test yourself first: 3 questions

Question 1 of 3

A client is being evaluated for alteplase (tPA) for acute ischemic stroke. Which finding would be a contraindication to administration?

What is alteplase (tpa)?

It is used for acute ischemic stroke, acute myocardial infarction, and massive pulmonary embolism within strict time windows. Bleeding, including intracranial hemorrhage, is the most serious risk, so candidate screening is rigorous.

Key points to remember

  • Dissolves existing thrombi and must be given within tight time windows (generally within 3-4.5 hours of ischemic stroke symptom onset).
  • A hemorrhagic stroke must be ruled out by CT before administration for stroke.
  • Absolute contraindications include active internal bleeding, recent intracranial hemorrhage, recent stroke, and recent major surgery or head trauma.
  • Intracranial hemorrhage is the most feared complication.
  • Blood pressure must be controlled (commonly below 185/110 mmHg for stroke) before and during therapy.
  • Invasive procedures, IM injections, and unnecessary venipunctures are minimized to prevent bleeding.

Nursing priorities

  1. Verify time of symptom onset and confirm the patient meets strict inclusion criteria before giving.
  2. Perform frequent neurologic and vital sign checks and continuous bleeding assessment.
  3. Minimize venipunctures, injections, and invasive lines; apply prolonged pressure to puncture sites.
  4. Control blood pressure within ordered parameters before and during infusion.
  5. Keep emergency equipment available and avoid concurrent anticoagulants or antiplatelets during the acute window unless ordered.

Labs & values

Platelet count (normal150,000-400,000/mm3)
aPTT (normal about30-40 seconds)
PT/INR (normal INR about 0.8-1.1)
Fibrinogen (normal about200-400 mg/dL)
Hemoglobin and hematocrit (monitored for bleeding)

Red flags: report now

  • Report sudden severe headache, decreased level of consciousness, or new neurologic deficits, which signal intracranial hemorrhage, and stop the infusion.
  • Report any signs of internal or external bleeding immediately.
  • Never give if the patient is outside the time window or has any absolute contraindication.
  • Report uncontrolled hypertension before or during therapy.

References

Clinical references for this topic

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