Metastatic Colon Cancer Is in Medicine / Internal Medicine — 56yo Man | Oncology | SMLE Q#15115
SMLE Question #15115
Medicine / Internal Medicine
Oncology
Objective: OBJ-191
Last updated: February 2026
A 56-year-old man with metastatic colon cancer is on day 3 of his first cycle of combination chemotherapy. While walking to the bathroom on the ward, he suddenly collapses. He is unresponsive and pulseless with agonal respirations. A code blue is called; CPR is started and return of spontaneous circulation is achieved after several defibrillation shocks. He is transferred to the ICU for post–cardiac arrest care. Which of the following is the most likely cause of this event?
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