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  • Title: Survival Following Edge-to-Edge Transcatheter Mitral Valve Repair in Patients With Cardiogenic Shock: A Nationwide Analysis.
    Author: Tang GHL, Estevez-Loureiro R, Yu Y, Prillinger JB, Zaid S, Psotka MA.
    Journal: J Am Heart Assoc; 2021 Apr 20; 10(8):e019882. PubMed ID: 33821669.
    Abstract:
    Background Edge-to-edge transcatheter mitral valve repair as salvage therapy in high surgical risk patients with severe mitral regurgitation presenting with cardiogenic shock (CS) has been described in small case series, but large clinical results have not been reported. This study aimed to evaluate outcomes of transcatheter mitral valve repair with MitraClip in patients with mitral regurgitation and CS using a large national database. Methods and Results From January 2014 to March 2019, we identified hospitalizations for CS in patients with mitral valve disease using data from Centers for Medicare and Medicaid Services. Those with a prior surgical or percutaneous mitral valve intervention were excluded. We compared survival between patients who underwent MitraClip during the index hospitalization and those who did not using propensity-matched analysis. The analysis included 38 166 patients (mean age, 71±11 years, 41.6% women) of whom 622 (1.6%) underwent MitraClip. MitraClip was increasingly used during CS hospitalizations over the study period (P<0.001). After matching, patients receiving MitraClip had significantly lower in-hospital mortality (odds ratio, 0.6; 95% CI, 0.47-0.77; P<0.001) and 1-year mortality (hazard ratio, 0.76; 95% CI, 0.65-0.88; P<0.001) compared with those without MitraClip. The survival benefit associated with MitraClip was consistent across subgroups of interest, with the exception of patients requiring acute mechanical circulatory support or hemodialysis at index. Conclusions In patients with mitral regurgitation presenting with CS, use of MitraClip is increasing and associated with greater in-hospital and 1-year survival. Further studies are warranted to optimize patient selection and procedure timing for those receiving MitraClip as a treatment option in CS.
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