RN Exam Practice
Pharmacological and Parenteral TherapiesQuestion 558 of 2368

Which rare but serious adverse effect should the nurse monitor for in a client receiving ondansetron?

  1. Tardive dyskinesia with facial movements
  2. Urinary retention with a full bladder
  3. Hypertensive crisis with severe headache
  4. QT prolongation with an abnormal cardiac rhythm
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Correct answer: QT prolongation with an abnormal cardiac rhythm

QT prolongation is a rare, serious effect of ondansetron that can cause an abnormal cardiac rhythm.

Source: Nursing Pharmacology, 2nd edition (Open RN, Chippewa Valley Technical College, 2023), Gastrointestinal System: Antiemetic Medication Classes. Licensed under CC BY 4.0.

Practice the topic "Pharmacological and Parenteral Therapies"

Questions last reviewed: 18 October 2026