Mitral Valve Prolapse and Sudden Cardiac Death in Athletes at High Risk

Olga      Vriz; Irene      Landi; Abdalla      Eltayeb; Giuseppe      Limongelli; Lucio      Mos; Pietro      Delise; Eduardo      Bossone; Antonello      D`Andrea

Abstract

Mitral valve prolapse (MVP) is the most frequent valvulopathy in the general population, with usually a favourable prognosis. Although it can be associated with some complications, ventricular arrhythmias (VA) and sudden cardiac death (SCD) are the most worrying. The estimated risk of SCD in MVP is between 0.2% to 1.9% per year, including MVP patients with and without severe mitral regurgitation (MR). The association between SCD and MVP is expressed by a phenotype called “malignant MVP” characterized by transthoracic echocardiography (TTE) findings such as bileaflet myxomatous prolapse and mitral annulus disjunction (MAD), ECG findings such as repolarization abnormalities, complex ventricular arrhythmias (c-VAs) and LV fibrosis of papillary muscles (PMs) and inferobasal wall visualized by late gadolinium enhancement cardiac magnetic resonance (LGE-CMR). Therefore, attention is raised for patients with “arrhythmic MVP” characterized from an ECG point of view by frequent premature ventricular contractions (PVCs) arising from one or both PMs as well as by T-wave inversion in the inferolateral leads. In athletes, SCD is the most frequent medical cause of death and in young subjects (< 35 years) usually is due to electrical mechanism affecting who has a silent cardiovascular disease and are not considered per se a cause of increased mortality. In MVP, SCD was reported to happen during sports activity or immediately after and valve prolapse was the only pathological aspect detected.

The aim of the present paper is to explore the association between SCD and MVP in athletes, focusing attention on ECG, TTE in particular, and CMR findings that could help to identify subjects at high risk for complex arrhythmias and eventually SCD. In addition, it is also examined if sports activity might predispose patients with MVP to develop major arrhythmias.

Keywords: Mitral valve, cardiac death, athletes, mitral valve prolapse, ventricular arrhythmias, premature ventricular contractions.

Graphical Abstract

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DOI https://dx.doi.org/10.2174/1573403X19666221220163431	Print ISSN 1573-403X
Publisher Name Bentham Science Publisher	Online ISSN 1875-6557

Current Cardiology Reviews

Mitral Valve Prolapse and Sudden Cardiac Death in Athletes at High Risk

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