SURVIVAL IN PATIENTS WITH MODERATE OR SEVERE MITRAL REGURGITATION AT HIGH RISK FOR SURGERY TREATED WITH AND WITHOUT THE MITRACLIP: A PROPENSITY MATCHED COMPARISON

Methods: High risk patients with 3+/4+ MR managed non-surgically between the years 2000-10 in the longitudinal DELD were subset for matching to MitraClip High Risk patients. Patient matching was performed using the method of nearest available Mahalanobis distance metric within calipers deined by the propensity score. Kaplan-Meier analyses and stratiied Cox proportional hazards models were used to compare survival at 30 days and 1 year. These outcomes were also analyzed in functional MR (FMR) subgroup from the matched cohort.