Diagnostic criteria

  The appearence of two consecutive ventricular premature beats is called as "ventricular couplet".

  The VPCs forming the ventricular couplet may have different morphologies.

  Ventricular couplet is more frequent in the presence of ventricular parasystole.



Reference

  Am J Cardiol 1979;44:435-441.




ECG 1. In the Holter recording above, ventricular couplet and VPC are seen. The VPCs forming the couplet may differ in shape.

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ECG 2. Ventricular couplet is seen.

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ECG 3. On the left is ventricular couplet while on the right is non-sustained ventricular tachycardia .
The normally conducted supraventricular beats have preceeding P waves .

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