Circadian variation of idiopathic ventricular tachycardia originating from right ventricular outflow tract.
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.
Hayashi
H
H
The Second Department of Internal Medicine, Toyama Medical and Pharmaceutical University, Japan.
Fujiki
A
A
Tani
M
M
Usui
M
M
Mizumaki
K
K
Shimono
M
M
Nagasawa
H
H
Inoue
H
H
D000328:Adult; D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D002940:Circadian Rhythm; D015716:Electrocardiography, Ambulatory; D005260:Female; D006339:Heart Rate; D006801:Humans; D011433:Propranolol / Q000627:therapeutic use; D013564:Sympathetic Nervous System / Q000503:physiopathology; D017180:Tachycardia, Ventricular / Q000175:diagnosis / Q000188:drug therapy / Q000503:physiopathology*; D018879:Ventricular Premature Complexes / Q000175:diagnosis / Q000188:drug therapy / Q000503:physiopathology*
D000889:Anti-Arrhythmia Agents; D011433:Propranolol