Nonreentrant Supraventricular Tachycardia Misdiagnosed as Inappropriate Sinus Tachycardia

作者：Bhatt Advay G; Monahan Kevin M^*

来源：Pacing and Clinical Electrophysiology, 2011, 34(8): E70-E73.

DOI：10.1111/j.1540-8159.2010.02783.x

• nonreentrant supraventricular tachycardia
• dual nodal response tachycardia
• 1:2 tachycardia
• dual AV nodal physiology
• inappropriate sinus tachycardia

We report a case of a woman with incessant palpitations initially misdiagnosed as inappropriate sinus tachycardia that proved refractory to beta-blockers. At the time of electrophysiologic testing, a sustained narrow-complex tachycardia with a 1:2 atrioventricular relationship was repeatedly initiated by a posterior fascicle depolarization induced by means of a timed ventricular extrastimulus. The tachycardia was repeatedly terminated with a timed atrial extrastimulus, which excluded junctional bigeminy and confirmed the diagnosis of nonreentrant supraventricular tachycardia. Catheter ablation of the slow pathway eliminated dual-pathway conduction and tachycardia. (PACE 2011;34:e70-e73)

• 出版日期2011-8