Activity ID



October 25, 2022

Format Type


CME Credit




CME Provider: JAMA

Description of CME Course

A 30-year-old man with palpitations and heart rate 241/min had a temperature of 38.2°C, an erythematous oropharynx, tonsillar exudates, and a positive rapid strep test result; an ECG showed narrow complex tachycardia with an incomplete right bundle-branch block–like morphology, a right inferior axis, and atrioventricular dissociation. What is the diagnosis and what would you do next?

1. This activity is accredited by the American Medical Association.
2. This activity is free to AMA members.

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Educational Objectives

Based on this clinical scenario and the accompanying image, understand how to arrive at a correct diagnosis.


Cardiology, Clinical Challenge, Rhythm Disorders


Medical Knowledge

CME Credit Type

AMA PRA Category 1 Credit

Additional Information


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