Catheter Ablation for Ventricular Tachycardia in Patients With Biopsy-Proven Myocarditis
Le Li, Ligang Ding, Shangyu Liu, Lingmin Wu, Lihui Zheng, Yulong Xiong, Zhuxin Zhang, Likun Zhou, Yan Yao
Abstract
Background: Catheter ablation (CA) is increasingly recognized as an effective treatment for ventricular tachycardia (VT) in myocarditis patients, although current evidence is based on less robust data. Objectives: The purpose of this study was to confirm CA's efficacy in reducing VT recurrence and to identify arrhythmic risk factors in biopsy-proven myocarditis patients. Methods: In this dual-center, retrospective study, we included 50 patients with biopsy-proven myocarditis and VT. They were divided into 2 groups: CA (n = 23) and non-CA (n = 27), with the primary endpoint being VT recurrence at 1-year follow-up. Results: 0.048). Conclusions: CA is significantly associated with reduced VT recurrence in biopsy-proven myocarditis, albeit this association is not observed in cases of acute myocarditis. The acute stage of myocarditis is independently associated with an increased risk of VT recurrence.