Bradycardia-induced polymorphic ventricular tachycardia after radiofrequency catheter modification of atrioventricular junction

We report the case of a 59-year-old man with a dilated nonischemic cardiomyopathy who had chronic rapid atrial fibrillation despite several therapies. Radiofrequency modification of the atrioventricular (AV) junction slowed the mean ventricular rate from 120 beats per minute (bpm) to 60 bpm. Five ho...

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Bibliographic Details
Published in:Journal of interventional cardiac electrophysiology 1997-09, Vol.1 (2), p.153
Main Authors: Brembilla-Perrot, B, Jacquemin, L, Houplon, P, Claudon, O, Chivoret, G, Vançon, A C, Stenger, C, Danchin, N
Format: Article
Language:English
Subjects:
Atrioventricular Node - surgery
Bradycardia - complications
Cardiac arrhythmia
Cardiomyopathy, Dilated - complications
Catheter Ablation
Electrocardiography
Humans
Male
Middle Aged
Tachycardia, Ventricular - etiology
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Summary:We report the case of a 59-year-old man with a dilated nonischemic cardiomyopathy who had chronic rapid atrial fibrillation despite several therapies. Radiofrequency modification of the atrioventricular (AV) junction slowed the mean ventricular rate from 120 beats per minute (bpm) to 60 bpm. Five hours after the procedure and during the following 1 week, despite ventricular pacing at 90 bpm, the patient developed nonsustained or sustained polymorphic ventricular tachycardias. Finally, pacing at 90 bpm was successfully used in this patient. In conclusion, patients who have undergone modification of AV conduction may be at high risk of life-threatening ventricular arrhythmias in the first week following the procedure.
ISSN:1383-875X
1572-8595
DOI:10.1023/A:1009711417058