{"title":"Excessively prolonged PR interval in a patient with worsening shortness of breath: a case report.","authors":"Yanjuan Zhang, Zhenyang Jiang, Mingfang Li","doi":"10.1186/s12872-025-04512-2","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Excessive prolongation of the PR interval indicates the potential for atrioventricular (AV) asynchrony, resulting in severe impairment of cardiac function.</p><p><strong>Case presentation: </strong>A 72-year-old man presented to the cardiology department with a history of worsening shortness of breath and chest tightness over the past 3 years. The electrocardiogram (ECG) showed sinus rhythm with a prolonged PR interval of 400 ms. The echocardiogram revealed mild mitral valve regurgitation with mitral E-A fusion during ventricular diastole. The patient received left bundle branch area pacing to shorten the AV conduction time.</p><p><strong>Conclusion: </strong>In patients with symptomatic AV block, reflected by an excessively prolonged PR interval, prompt decision-making regarding cardiac pacing therapy can help relieve clinical symptoms and enhance the patient's quality of life.</p>","PeriodicalId":9195,"journal":{"name":"BMC Cardiovascular Disorders","volume":"25 1","pages":"106"},"PeriodicalIF":2.3000,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11831768/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"BMC Cardiovascular Disorders","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1186/s12872-025-04512-2","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CARDIAC & CARDIOVASCULAR SYSTEMS","Score":null,"Total":0}
引用次数: 0
Abstract
Background: Excessive prolongation of the PR interval indicates the potential for atrioventricular (AV) asynchrony, resulting in severe impairment of cardiac function.
Case presentation: A 72-year-old man presented to the cardiology department with a history of worsening shortness of breath and chest tightness over the past 3 years. The electrocardiogram (ECG) showed sinus rhythm with a prolonged PR interval of 400 ms. The echocardiogram revealed mild mitral valve regurgitation with mitral E-A fusion during ventricular diastole. The patient received left bundle branch area pacing to shorten the AV conduction time.
Conclusion: In patients with symptomatic AV block, reflected by an excessively prolonged PR interval, prompt decision-making regarding cardiac pacing therapy can help relieve clinical symptoms and enhance the patient's quality of life.
期刊介绍：
BMC Cardiovascular Disorders is an open access, peer-reviewed journal that considers articles on all aspects of the prevention, diagnosis and management of disorders of the heart and circulatory system, as well as related molecular and cell biology, genetics, pathophysiology, epidemiology, and controlled trials.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
