30 Minutes Of Sudden in Medicine / Internal Medicine — 45yo Man | Cardiology | SMLE Q#12368
SMLE Question #12368
Medicine / Internal Medicine
Cardiology
Objective: OBJ-163
Last updated: February 2026
A 45-year-old man presents to the emergency department with 30 minutes of sudden palpitations and mild dyspnea at rest. ECG shows a regular narrow-complex tachycardia. During evaluation, he becomes drowsy and less responsive with weak peripheral pulses and delayed capillary refill. What is the most appropriate immediate action?
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