Dodulík Jozef, Plášek Jiří, Vrtal Jiří, Václavík Jan
Department of Internal Medicine and Cardiology, University Hospital Ostrava, 17. listopadu 1790/5, 70800, Ostrava, Czech Republic.
Research Center for Internal and Cardiovascular Diseases, Faculty of Medicine, University of Ostrava, 70300, Ostrava, Czech Republic.
Cardiol Ther. 2025 Aug 27. doi: 10.1007/s40119-025-00429-1.
Incomplete right bundle branch block (iRBBB) is a frequent electrocardiographic (ECG) finding, often considered benign. However, recent evidence suggests it may be associated with underlying structural or electrical abnormalities, particularly in selected populations.
We conducted a narrative review of population-based cohorts, mechanistic studies, and clinical trials focused on the prevalence, pathophysiological mechanisms, differential diagnosis, and prognostic implications of iRBBB.
iRBBB is common in athletes and individuals with pulmonary or structural heart diseases. Although frequently asymptomatic, it may reflect right ventricular strain, pulmonary hypertension, or a predisposition to arrhythmias such as atrial fibrillation. Specific ECG features, comorbidities, and clinical context help to differentiate benign from pathologic iRBBB.
iRBBB should not be routinely regarded as a harmless variant. In high-risk individuals, it may carry clinical and prognostic significance, warranting further evaluation. Standardized criteria and additional prospective studies are needed to better understand its implications. Infographic available for this article. INFOGRAPHIC.
不完全性右束支传导阻滞（iRBBB）是一种常见的心电图（ECG）表现，通常被认为是良性的。然而，最近的证据表明，它可能与潜在的结构或电异常有关，特别是在特定人群中。
我们对基于人群的队列研究、机制研究和临床试验进行了叙述性综述，重点关注iRBBB的患病率、病理生理机制、鉴别诊断和预后意义。
iRBBB在运动员以及患有肺部或结构性心脏病的个体中很常见。虽然通常无症状，但它可能反映右心室劳损、肺动脉高压或心律失常（如心房颤动）的易感性。特定的心电图特征、合并症和临床背景有助于区分良性与病理性iRBBB。
iRBBB不应常规被视为无害变异。在高危个体中，它可能具有临床和预后意义，需要进一步评估。需要标准化标准和更多前瞻性研究以更好地了解其影响。本文提供信息图表。信息图表。
