Utility of Cardiopulmonary Exercise Test in Mitral Valve Transcatheter Edge-to-Edge Repair.

The growing utility of mitral valve transcatheter edge-to-edge repair (TEER) for minimally invasive treatment of severe mitral regurgitation has seen an attendant need to identify patients that can best benefit from this treatment. To ensure that the most appropriate patients are selected for the percutaneous procedure, cardiopulmonary exercise testing (CPET) had been incorporated into our centre's workflow for patients undergoing evaluation for mitral TEER. CPET can be a useful diagnostic and prognostic tool in the management of patients with severe MR undergoing percutaneous valve repair, especially when complemented with appropriately timed echocardiographic examinations, and should be integrated as a part of all percutaneous MV TEER programs as a standard investigation pre- and post-intervention.