Diagnostic criteria

  Three consecutive sinus beats are followed by a ventricular premature beat.

  The wide QRS complexes without preceding P waves are ventricular premature beats.

ECG 1. Ventricular quadrigeminy.

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ECG 2. The above ECG is from a young woman with a normal ECHOcardiogram.
Ventricular quadrigeminy is seen. VPCs resemble left bundle branch block and
are positive in inferior leads: the origin is right ventricular outflow tract.

Esra Dogan has donated the above ECG to our website.

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