Electronic pages: case reports
Catheter
ablation of a monofocal premature ventricular complex triggering
idiopathic ventricular fibrillation
S Takatsuki, H Mitamura, S Ogawa
Division of
Cardiology, Department of Medicine, Keio University School of Medicine,
35 Shinanomachi, Shinjukuku, Tokyo 160-8582, Japan
Correspondence to: Dr Takatsuki seiji{at}med.keio.ac.jp
Accepted 7 March 2001
A 62 year old man was admitted for evaluation of recurrent
episodes of syncope. A surface ECG showed frequent repetitive premature ventricular complexes of right ventricular outflow tract origin. Ventricular fibrillation was inducible by programmed electrical stimulation but otherwise cardiac evaluation was unremarkable. A
diagnosis of idiopathic ventricular fibrillation was made and an
implantable cardioverter-defibrillator (ICD) was installed. However,
spontaneous ventricular fibrillation recurred, requiring repeated ICD
discharges. The ventricular fibrillation was reproducibly triggered by
a single premature ventricular complex with a specific QRS morphology.
Radiofrequency catheter ablation was carried out to eradicate this
complex. No ventricular fibrillation has developed after this
procedure, and the patient does not require drug treatment.
Keywords: ventricular fibrillation; radiofrequency ablation
© 2001 by Heart
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