Unmasking a Hidden Bridge: Exercise-Induced Right Bundle Branch Block Without Ischemia.

IF 0.5 Q4 CARDIAC & CARDIOVASCULAR SYSTEMS

Case Reports in Cardiology Pub Date : 2026-08-07 eCollection Date: 2026-01-01 DOI:10.1155/cric/2330053

Ana Karen Nieto-Dolores, Hugo Armando Valencia-Hernandez, Alfonso Gonzalez-Trejo, Nilda Espinola-Zavaleta, Enrique C Guerra, Maria Jose Santa-Ana-Bayona, Pavel Martinez-Dominguez, Gilberto H Gutierrez-Acosta, Camila Ponce-Acosta

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引用次数: 0

Abstract

Background: Myocardial bridging (MB) is usually benign but may occasionally be associated with ischemia or arrhythmias. Exercise induced conduction abnormalities are rare and poorly understood.

Case summary: A 69-year-old asymptomatic male developed transient right bundle branch block (RBBB) at peak exertion during treadmill stress testing, without angina, ischemic ECG changes, or hemodynamic instability. The RBBB resolved immediately during recovery. Coronary computed tomography angiography identified a superficial myocardial bridge of the mid-left anterior descending artery without luminal narrowing or atherosclerosis.

Discussion: The findings supported a benign, rate dependent conduction delay rather than ischemia.

Conclusion: This case illustrates a rare coexistence of MB with exercise-induced RBBB and highlights the importance of recognizing nonischemic conduction phenomena to avoid unnecessary invasive studies.

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揭示隐藏的桥：运动诱导的无缺血右束支阻滞。

背景：心肌桥（MB）通常是良性的，但偶尔也可能与缺血或心律失常有关。运动引起的传导异常是罕见的，人们对其了解甚少。病例总结：一名69岁无症状男性在跑步机负荷测试时出现短暂性右束支阻滞（RBBB），无心绞痛、缺血性心电图改变或血流动力学不稳定。RBBB在恢复过程中立即解决。冠状动脉计算机断层血管造影发现左中前降支浅表心肌桥，无管腔狭窄或动脉粥样硬化。讨论：研究结果支持良性的、速率依赖的传导延迟，而不是缺血。结论：该病例显示了MB与运动诱导的RBBB共存的罕见情况，并强调了识别非缺血性传导现象以避免不必要的侵入性研究的重要性。

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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来源期刊

Case Reports in Cardiology CARDIAC & CARDIOVASCULAR SYSTEMS-

自引率

0.00%

发文量

审稿时长

13 weeks

期刊介绍： Case Reports in Cardiology is a peer-reviewed, Open Access journal that publishes case reports and case series related to hypertension, arrhythmia, congestive heart failure, valvular heart disease, vascular disease, congenital heart disease and cardiomyopathy.