Yasufumi Nagata, Philippe B Bertrand, Vinit Baliyan, Jonathan Kochav, Ruth D Kagan, Kristian Ujka, Hassan Alfraidi, Antonia van Kampen, Jordan E Morningstar, Jacob P Dal-Bianco, Serguei Melnitchouk, Godtfred Holmvang, Michael A Borger, Reece Moore, Lanqi Hua, Razia Sultana, Pablo Villar Calle, Brian Yum, J Luis Guerrero, Tomas G Neilan, Michael H Picard, Jiwon Kim, Francesca N Delling, Judy Hung, Russell A Norris, Jonathan W Weinsaft, Robert A Levine
BACKGROUND: The relation between ventricular arrhythmia and fibrosis in mitral valve prolapse (MVP) is reported, but underlying valve-induced mechanisms remain unknown. We evaluated the association between abnormal MVP-related mechanics and myocardial fibrosis, and their association with arrhythmia. METHODS: We studied 113 patients with MVP with both echocardiogram and gadolinium cardiac magnetic resonance imaging for myocardial fibrosis. Two-dimensional and speckle-tracking echocardiography evaluated mitral regurgitation, superior leaflet and papillary muscle displacement with associated exaggerated basal myocardial systolic curling, and myocardial longitudinal strain...
April 2023: Circulation. Cardiovascular Imaging