单次心室外刺激不同耦合间隔再现多种形态室性早搏一例。

IF 2.3 3区医学 Q2 CARDIAC & CARDIOVASCULAR SYSTEMS

Journal of Cardiovascular Electrophysiology Pub Date : 2025-04-21 DOI:10.1111/jce.16684

Naoyuki Miwa, Tadanori Nakata, Satoshi Hara, Tomohiro Tahara, Taiki Ishizawa, Hidenori Hirano, Yoshikazu Sato, Shigeki Kusa, Hitoshi Hachiya

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引用次数: 0

摘要

简介：一名22岁男性，无心血管病史，尽管使用比索洛尔治疗，但仍出现频繁的症状性室性早搏（VPCs），并伴有多种QRS形态。结果：从VPC1到VPC3，偶联时间逐渐增加，以VPC2最为频繁。最早的激活位点在左右冠状动脉尖交界处。可变耦合间隔的单心室外刺激成功地复制了与VPC1-3相同的QRS形态。结论：本病例说明了单个焦点VPC如何由于不同的融合与内在传导而呈现出多种形态，以及耦合区间匹配的外刺激在识别起源中的重要性。

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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A Case of Ventricular Premature Contractions With Multiple Morphologies Reproduced by a Single Ventricular Extrastimulus With Different Coupling Intervals

Introduction

A 22-year-old male with no cardiovascular history presented with frequent symptomatic ventricular premature contractions (VPCs) with multiple QRS morphologies despite bisoprolol treatment.

Results

The coupling intervals progressively increased from VPC1 to VPC3, and VPC2 was the most frequent. The earliest activation site was identified at the left-right coronary cusp junction. Single ventricular extrastimuli with variable coupling intervals from this site successfully reproduced QRS morphologies identical to VPC1-3.

Conclusion

This case illustrated how a single focus VPC could exhibit multiform morphology due to varying fusion with intrinsic conduction and the importance of coupling interval-matched extrastimuli in identifying the origin.

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来源期刊

Journal of Cardiovascular Electrophysiology 医学-心血管系统

CiteScore

5.20

自引率

14.80%

发文量

433

审稿时长

3-6 weeks

期刊介绍： Journal of Cardiovascular Electrophysiology (JCE) keeps its readership well informed of the latest developments in the study and management of arrhythmic disorders. Edited by Bradley P. Knight, M.D., and a distinguished international editorial board, JCE is the leading journal devoted to the study of the electrophysiology of the heart.