Delayed recurrence of complete atrioventricular block following ablation for premature ventricular complexes.

IF 1.5 4区医学 Q3 CARDIAC & CARDIOVASCULAR SYSTEMS

Journal of Cardiothoracic Surgery Pub Date : 2025-08-18 DOI:10.1186/s13019-025-03570-z

Yao Zhao, Xueyan Ding, Jiang Cao, Xinmiao Huang

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Abstract

A 77-year-old man was admitted for catheter ablation due to frequent premature ventricular complexes (PVCs). Activation mapping revealed that the earliest ventricular activation during the PVC was recorded on the left upper septum, where a clear His bundle electrogram was recorded during sinus rhythm. Radiofrequency ablation was performed with step-wise incremental application of the radio frequency energy. AV block was observed twice during RF ablation and disappeared within 5 s after stopping energy application each time. As he exhibited normal atrioventricular conduction, the patient was discharged home the following day. Five days after discharge, he experienced recurrent syncope, with ECG showing complete heart block. Although continuous telemetric echocardiogram monitoring revealed resolution of the complete atrioventricular block after 8 days, it recurred 5 days after. Follow-up evaluation of the pacemaker revealed persistent atrioventricular block at 3 and 6 months.

Abstract Image

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完全性房室传导阻滞的迟发性复发。

一位77岁的男性因频繁的室性早搏（早搏）而入院导管消融。激活图显示，最早的心室激活记录在左上隔，在窦性心律时，清晰的他束电图记录在左上隔。射频消融是通过逐步增加射频能量来完成的。在射频消融术中观察到两次房室阻滞，每次停止能量应用后5 s内消失。由于他表现出正常的房室传导，病人于第二天出院回家。出院后5天，复发性晕厥，心电图显示完全性心脏传导阻滞。虽然连续遥测超声心动图监测显示8天后完全房室传导阻滞消退，但5天后又复发。起搏器的随访评估显示持续房室传导阻滞在3和6个月。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Cardiothoracic Surgery 医学-心血管系统

CiteScore

2.50

自引率

6.20%

发文量

286

审稿时长

4-8 weeks

期刊介绍： Journal of Cardiothoracic Surgery is an open access journal that encompasses all aspects of research in the field of Cardiology, and Cardiothoracic and Vascular Surgery. The journal publishes original scientific research documenting clinical and experimental advances in cardiac, vascular and thoracic surgery, and related fields. Topics of interest include surgical techniques, survival rates, surgical complications and their outcomes; along with basic sciences, pediatric conditions, transplantations and clinical trials. Journal of Cardiothoracic Surgery is of interest to cardiothoracic and vascular surgeons, cardiothoracic anaesthesiologists, cardiologists, chest physicians, and allied health professionals.