Evidence of sinoatrial block as a curative mechanism in radiofrequency current ablation of inappropriate sinus tachycardia.
Inappropriate sinus tachycardia is a nonparoxysmal tachycardia characterized by high resting heart rates and a disproportionate response to activity. Sinus node modification with radiofrequency current has been used successfully as treatment for this arrhythmia. However, the electrophysiologic mechanisms leading to successful modification are not yet fully elucidated. We report a case of a patient with drug-resistant inappropriate sinus tachycardia in whom successful treatment of the arrhythmia was achieved by documented sinoatrial exit block induced by radiofrequency current applications.
Department of Cardiology and Internal Medicine, University of Technology, Aachen, Germany. kmis@pcserver.mk1.rwth-aachen.de
K
K
Mischke
C
C
Stellbrink
P
P
Hanrath
D000328:Adult; D017115:Catheter Ablation; D004562:Electrocardiography; D005260:Female; D006801:Humans; D012848:Sinoatrial Block / Q000503:physiopathology*; D013616:Tachycardia, Sinus / Q000503:physiopathology* / Q000601:surgery*; D013965:Thyroidectomy