skip to main content

Opioid-induced ileus — USMLE Step 3 MCQ

Instant feedback + full explanation. One question, done properly.

ModerateSurgery (post-operative, follow-up)Opioid-induced ileusUSMLE Step 3

A 49-year-old woman has constipation, bloating, and nausea after outpatient hernia repair. She has taken oxycodone every 4 hours for 3 days. Abdomen is mildly distended without peritonitis. She has active bowel sounds and no fever. Which of the following is the most likely explanation for this patient's findings?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: B — Reduced gastrointestinal motility from opioid receptor activation

Opioids slow gastrointestinal motility and commonly cause postoperative constipation or ileus-like symptoms.

Reference: ACS/SAGES perioperative care principles and standard surgical management guidance: https://www.facs.org/