Increasing Pulmonary Arterial Pressure at Low Level of Exercise in Asymptomatic, Organic Mitral Regurgitation

Organic mitral regurgitation (OMR) has become the most frequent cause of severe MR leading to surgery in the Western world. However, the timing of surgery, in other words, early prophylactic surgery versus watchful waiting strategy, in patients with asymptomatic severe MR remains controversial. We