The presence of concomitant aortic insufficiency (AI) and mitral regurgitation (MR) is common and may further accelerate cardiac dysfunction. However, there exists no US regulatory-approved transcatheter device for the treatment of AI. The effectiveness of isolated transcatheter mitral therapy in this population is not well-understood; thus, we aimed to evaluate outcomes for patients with combined AI and MR compared with isolated MR who underwent mitral transcatheter edge-to-edge repair (m-TEER). Retrospective data were obtained from the Northwell m-TEER registry. A total of 587 patients who underwent m-TEER at 4 high-volume transcatheter aortic valve replacement/transcatheter edge-to-edge repair centers within the Northwell Health system were included. All patients had severe MR and were divided into 2 groups: group 1 with ≥3+ AI (AI+) and the group 2 with <3+ AI (AI-). Echocardiographic outcomes were evaluated at 1 month. Clinical outcomes were evaluated at 1 month and 1 year. The primary end point was death or rehospitalization at 1 year. A total of 587 patients were included in the study, with 92 in the AI+ group. Baseline characteristics were similar in both groups. Approximately 2/3 of patients in the AI+ group demonstrated an improvement in AI severity after isolated mitral therapy. There was no difference in the primary outcome at 1 month or 1 year. There was also no significant difference in New York Heart Association functional class at 1 month between the groups. In conclusion, patients who underwent m-TEER with combined MR and AI (AI+ group) fared well compared with those with isolated mitral valve dysfunction (AI- group), with no discernible differences in survival, New York Heart Association class, or rehospitalization rates at 1 month or 1 year. Hence, isolated m-TEER is a reasonable treatment approach in patients with a high surgical risk with combined AI and MR.
Keywords: aortic insufficiency; mitral regurgitation; mitral transcatheter edge-to-edge repair.
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