A case of vagally mediated idiopathic ventricular fibrillation.
BACKGROUND
A 25-year-old woman experienced three episodes of syncope over the course of 2 years. The attacks all occurred just after she had sat down, and two were accompanied by convulsions. She had no obvious prodromes and no personal or family history of cardiovascular disease.


METHODS
Electrocardiography, chest radiography, echocardiography, cerebral and cardiac MRI, electroencephalography, 24 h Holter monitoring, electrophysiological study with drug provocation testing and heart-rate variability analysis.


METHODS
Vagally mediated ventricular fibrillation initiated by premature ventricular complexes arising from the right ventricular outflow tract.


RESULTS
Catheter ablation was performed at the right ventricular outflow tract and an implantable cardioverter-defibrillator was fitted.
Kataoka
Masaharu
M
Department of Internal Medicine, Keio University School of Medicine, Tokyo, Japan.
Takatsuki
Seiji
S
Tanimoto
Kojiro
K
Akaishi
Makoto
M
Ogawa
Satoshi
S
Mitamura
Hideo
H
D000328:Adult; D017115:Catheter Ablation; D017147:Defibrillators, Implantable; D004452:Echocardiography; D004554:Electric Countershock / Q000295:instrumentation; D004562:Electrocardiography; D015716:Electrocardiography, Ambulatory; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006321:Heart / Q000294:innervation*; D006339:Heart Rate; D006801:Humans; D008279:Magnetic Resonance Imaging; D019462:Syncope, Vasovagal / Q000209:etiology* / Q000503:physiopathology / Q000628:therapy; D014630:Vagus Nerve / Q000503:physiopathology*; D014693:Ventricular Fibrillation / Q000150:complications / Q000209:etiology* / Q000503:physiopathology / Q000628:therapy; D018879:Ventricular Premature Complexes / Q000150:complications / Q000175:diagnosis* / Q000503:physiopathology / Q000628:therapy