PERSISTENT INAPPROPRIATE SINUS TACHYCARDIA AFTER RADIOFREQUENCY CURRENT CATHETER MODIFICATION OF THE ATRIOVENTRICULAR NODE

Atrioventricular (AV) junctional reentrant tachycardia (JRT) is the most frequent cause of paroxysmal supraventricular tachycardia.1 Recently, radiofrequency current delivered through a transvenous catheter was used to modify AV nodal properties so that AVJRT is no longer inducible while preserving normal AV nodal conduction. 2-4 This technique has produced high success rates with relatively few complications. In this report, we present a previously unreported complication observed in 3 patients undergoing AV node modification using radiofrequency current: persistent, inappropriate and symptomatic sinus tachycardia. © 1992.