Autonomic effects of radiofrequency catheter ablation.
Radiofrequency (RF) catheter ablation has become the treatment of choice for a variety of supraventricular tachycardias. Autonomic dysfunction may occur during application of RF current; these abnormalities resolve quickly when current delivery is terminated. We present a case of sinus node arrest and AV block in a 69-year-old woman induced by RF catheter ablation of an AV nodal slow pathway. The proposed mechanisms are a Bezold-Jarisch-like phenomenon or paradoxical activation of cardiac C fibres by direct neural sympathetic stimulation or RF-induced myocardial injury. Based on a review of previously published reports, autonomic effects of RF ablation are discussed.
Duru
F
F
Cardiac Arrhythmia Unit, University Hospital of Zurich, Switzerland.
Bauersfeld
U
U
Candinas
R
R
D000368:Aged; D001341:Autonomic Nervous System / Q000503:physiopathology; D017115:Catheter Ablation / Q000009:adverse effects*; D005260:Female; D006327:Heart Block / Q000209:etiology*; D006801:Humans