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Am J Cardiol. 1999 Jul 1;84(1):99-101, A8.

Circadian variation of idiopathic ventricular tachycardia originating from right ventricular outflow tract.

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The Second Department of Internal Medicine, Toyama Medical and Pharmaceutical University, Japan.


We determined circadian variation of isolated ventricular premature complexes (VPCs), 2 to 4 consecutive VPCs, and ventricular tachycardia (5 consecutive VPCs) originating from the right ventricular outflow tract in patients without apparent structural heart diseases. There was apparent circadian variation with 2 prominent peaks for these ventricular arrhythmias, and blockade abolished ventricular tachycardia and attenuated the circadian variation of consecutive VPCs.

[Indexed for MEDLINE]

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