Journal
CIRCULATION JOURNAL
Volume 71, Issue 10, Pages 1606-1609Publisher
JAPANESE CIRCULATION SOC
DOI: 10.1253/circj.71.1606
Keywords
atrial fibrillation; delayed afterdepolarization; sinus node dysfunction; ventricular tachycardia
Categories
Ask authors/readers for more resources
Background This study was performed to investigate the frequency and importance of supraventricular arrhythmia and sinus node (SN) dysfunction in patients with catecholaminergic polymorphic ventricular tachycardia (CPVT). Methods and Results Eight patients with CPVT (mean age: 16.8 +/- 8.1 years) underwent an electrophysiological study. SN recovery time (1,389 +/- 394 ms) was slightly prolonged, and 4 of 8 patients had abnormal values. Atrial flutter (AF) was induced by low-rate atria] pacing in 2 patients and by isoproterenol infusion in I patient. Atrial fibrillation (Af) was induced by isoproterenol infusion in 2 patients. One patient presented with Af during the follow-up period, and 2 of 4 patients with AF/Af presented with increased SN recovery time. Conclusions Patients with CPVT frequently have associated with SN dysfunction, and inducible atrial tachy-arrhythmias, which indicate that the pathogenesis of CPVT is limited not only to the ventricular myocardium, but also to broad regions of the heart, including the SN and atrial muscle.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available