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Stable supraventricular tachycardia — RCPSC EM MCQ

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ModerateCardiovascular emergenciesStable supraventricular tachycardiaRCPSC EM

A 67-year-old woman has palpitations and presyncope. ECG shows regular narrow-complex tachycardia at 190/min. BP is 108/68, chest pain is absent, and she is alert after vagal manoeuvres fail. What is the most appropriate initial management?

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

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Correct answer: A — Give rapid IV adenosine with continuous ECG recording

Stable regular narrow-complex SVT after unsuccessful vagal manoeuvres is treated with rapid IV adenosine while monitoring the rhythm.

Reference: ACLS/ATLS/PALS principles adapted to Canadian ED practice