Mitral Valve Prolapse With Mitral Annular Disjunction Causing Ventricular Tachycardia During a Stress Test: A Case Report.

压力测试期间二尖瓣脱垂伴二尖瓣环分离导致室性心动过速 ： 病例报告。

• 发表时间: 2024 Jul
• 来源期刊: Cureus
• DOI: 10.7759/cureus.64020
• PMID: 39109096
• 文章类型: Case Reports
• 作者列表: Palomino Abella AE,Masarweh OM,Iyyani M,Oliynyk V,Gill-Duncan N

关键词: cardiac mri; cardiac stress test; mitral annular disjunction; mitral valve prolapse; ventricular tachycardia (vt)

Abstract

Mitral valve prolapse (MVP) is a relatively common valvular disorder characterized by displacement of one or both mitral valve leaflets into the left atrium (LA) during systole. Mitral annular disjunction (MAD) is an associated abnormality where a portion of the mitral valve annulus attaches superiorly in the left atrial wall. Although MVP is often considered benign, it can rarely lead to serious complications such as ventricular arrhythmias, especially when MAD is present. Herein, we present a case of a 63-year-old male with MVP and MAD who experienced sustained ventricular tachycardia (VT) during cardiac stress testing. This case underscores the importance of recognizing MVP with MAD as a potential substrate for ventricular arrhythmias, notably under heightened physiological or induced periods of stress.

摘要

二尖瓣脱垂（MVP）是一种相对常见的瓣膜疾病，其特征在于收缩期一个或两个二尖瓣小叶移位到左心房（LA）中。二尖瓣环分离（MAD）是一种相关的异常，其中二尖瓣环的一部分附着在左心房壁的上方。虽然MVP通常被认为是良性的，它很少会导致严重的并发症，如室性心律失常，特别是当MAD存在时。在这里，我们介绍一例63岁男性MVP和MAD患者,在心脏负荷试验期间出现持续性室性心动过速(VT).该病例强调了识别MVP和MAD作为室性心律失常的潜在底物的重要性。特别是在紧张的生理或诱导期。