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Transcatheter Edge-to-Edge Mitral Valve Repair in Patients With Severe Mitral Regurgitation and Cardiogenic Shock.
Journal of the American College of Cardiology 2022 November 30
BACKGROUND: Data on the efficacy of transcatheter edge-to-edge repair (TEER) in patients with cardiogenic shock (CS) are limited.
OBJECTIVES: This study investigated the characteristics and outcomes of consecutive patients with significant mitral regurgitation (MR) and CS who underwent TEER.
METHODS: The Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy Registry was assessed from November 22, 2013, to December 31, 2021. CS was defined as the coding of: 1) CS; 2) inotrope use; or 3) mechanical circulatory support before TEER. Device success was defined as MR reduction of ≥1 grade and a final MR grade ≤2+. The primary outcome was the impact of device success on 1-year mortality or heart failure (HF) readmissions. Cox proportional hazards models were used to report the risk-adjusted association between device success and 1-year outcomes.
RESULTS: A total of 3,797 patients met the inclusion criteria. Mean age was 73.0 ± 11.9 years, and 59.5% were male. Mean Society of Thoracic Surgery score (MV repair) was 14.9% ± 15.3%. MR etiology was degenerative (53.4%) and functional (27.5%). Device success was achieved in 3,249 (85.6%) patients given successful achievement of final MR grade ≤2+ (88.2%) and MR reduction ≥1 absolute grade (91.4%). At 1 year after TEER, device success was associated with significantly lower all-cause mortality (34.6% vs 55.5%; adjusted HR: 0.49; 95% CI: 0.41-0.59; P < 0.001) and a composite of mortality or HF admissions (29.6% vs 45.2%; adjusted HR: 0.51; 95% CI: 0.42-0.62; P < 0.001).
CONCLUSIONS: Successful MR reduction is achievable in most patients with CS and is associated with significantly lower mortality and HF hospitalization at 1 year. Randomized trials assessing TEER in CS are needed to establish this potential therapeutic approach.
OBJECTIVES: This study investigated the characteristics and outcomes of consecutive patients with significant mitral regurgitation (MR) and CS who underwent TEER.
METHODS: The Society of Thoracic Surgeons/American College of Cardiology Transcatheter Valve Therapy Registry was assessed from November 22, 2013, to December 31, 2021. CS was defined as the coding of: 1) CS; 2) inotrope use; or 3) mechanical circulatory support before TEER. Device success was defined as MR reduction of ≥1 grade and a final MR grade ≤2+. The primary outcome was the impact of device success on 1-year mortality or heart failure (HF) readmissions. Cox proportional hazards models were used to report the risk-adjusted association between device success and 1-year outcomes.
RESULTS: A total of 3,797 patients met the inclusion criteria. Mean age was 73.0 ± 11.9 years, and 59.5% were male. Mean Society of Thoracic Surgery score (MV repair) was 14.9% ± 15.3%. MR etiology was degenerative (53.4%) and functional (27.5%). Device success was achieved in 3,249 (85.6%) patients given successful achievement of final MR grade ≤2+ (88.2%) and MR reduction ≥1 absolute grade (91.4%). At 1 year after TEER, device success was associated with significantly lower all-cause mortality (34.6% vs 55.5%; adjusted HR: 0.49; 95% CI: 0.41-0.59; P < 0.001) and a composite of mortality or HF admissions (29.6% vs 45.2%; adjusted HR: 0.51; 95% CI: 0.42-0.62; P < 0.001).
CONCLUSIONS: Successful MR reduction is achievable in most patients with CS and is associated with significantly lower mortality and HF hospitalization at 1 year. Randomized trials assessing TEER in CS are needed to establish this potential therapeutic approach.
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