Cardiac Medicine Certification (CMC)

Which finding on a 12-lead ECG is most characteristic of Wolff-Parkinson-White (WPW) syndrome during sinus rhythm?

Prolonged PR interval greater than 200 ms Short PR interval with a delta wave Widened QRS with left bundle branch block morphology ST-segment elevation in leads V1-V4

Correct Answer:

Short PR interval with a delta wave

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