Mitral valve repair was associated with better event-free survival compared to mitral valve replacement in native mitral valve endocarditis (HR 3.48; 95% CI 1.15-10.61; P=0.03).
Cohort (n=152)
No
Does mitral valve repair improve event-free survival compared to mitral valve replacement in patients with native mitral valve infective endocarditis?
In patients with native mitral valve infective endocarditis, mitral valve repair is associated with improved event-free survival and lower mortality compared to mitral valve replacement.
Hazard Ratio: 3.48 (95% CI 1.15–10.61)
p-value: p=0.03
BACKGROUND: In native mitral valve infective endocarditis (NMIE), the respective values of mitral valve repair (MVRep) and replacement (MVR) are still debated. AIM: To compare MVRep and MVR in a large prospective matched cohort. METHODS: Between 2010 and 2017, all consecutive patients operated on for NMIE in our centre were included prospectively. Clinical and outcome features were compared between the two groups. Primary endpoint was event-free survival, including death, reoperation and relapse. Univariate and multivariable survival analyses and a propensity score analysis were performed. RESULTS: Among 152 patients, 115 (75.7%) underwent MVRep, and 37 (24.3%) MVR. Median follow-up was 28±22months. Surgery was performed during the active phase in 75.0% of patients (25.7% on an urgent basis). Compared with the MVRep group, patients in the MVR group were more frequently intravenous drug abusers (10.8% vs. 0.9%; P=0.016), had a more frequent history of rheumatic fever (13.5% vs. 0%; P=0.001), more aortic abscesses (16.7% vs. 3.5%; P=0.018), larger vegetations (16.6±8.1mm vs. 12.6±9.9mm; P=0.042) and poorer New York Heart Association status (P=0.006). Overall mortality was lower in the MVRep group than in MVR group (11.3% vs. 29.3%; P=0.018). Event-free survival was better in the MVRep group than in the MVR group in univariate analysis (hazard ratio: 2.72, 95% confidence interval: 1.34-5.52; P=0.004). Survival analysis in the propensity-matched cohort showed that MVRep was safer than MVR (log rank test: P=0.018). Multivariable analysis using the Cox proportional hazard model confirmed this finding (hazard ratio: 3.48, 95% confidence interval: 1.15-10.61; P=0.03). CONCLUSIONS: MVRep is feasible in most cases of NMIE and, when technically possible, should be preferred, even in urgent surgery.
Oliver et al. (2022) conducted a cohort in Native mitral valve infective endocarditis (n=152). Mitral valve repair vs. Mitral valve replacement was evaluated on Event-free survival, including death, reoperation and relapse (HR 3.48, 95% CI 1.15-10.61, p=0.03). Mitral valve repair was associated with better event-free survival compared to mitral valve replacement in native mitral valve endocarditis (HR 3.48; 95% CI 1.15-10.61; P=0.03).