MILD IMPAIRMENT IN PRE-OPERATIVE CARDIOPULMONARY EXERCISE TESTING DOES NOT ADVERSELY IMPACT LONG TERM PROGNOSIS AFTER SURGERY FOR SEVERE PRIMARY MITRAL REGURGITATION. - Afoke, Jonathan; Schaff, Hartzell V.; Crestanello, Juan A.; Elbenawi, Hossam; Chopko, Trevor; Aguilar, Myriam Monserrat Martinez; Todd, Austin; Michelena, Hector I.; Nkomo, Vuyisile Tlhopane; Allison, Thomas G.; Bagameri, Gabor (Journal of the American College of Cardiology (JACC), 2024)