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  • Title: Minimally invasive mitral valve annuloplasty confers a long-term survival benefit compared with state-of-the-art treatment in heart failure with functional mitral regurgitation.
    Author: Penicka M, Kotrc M, Ondrus T, Mo Y, Casselman F, Vanderheyden M, Van Camp G, Van Praet F, Bartunek J.
    Journal: Int J Cardiol; 2017 Oct 01; 244():235-241. PubMed ID: 28624330.
    Abstract:
    BACKGROUND: Clinical impact of the minimally invasive surgical mitral valve annuloplasty (MVA) of functional mitral regurgitation (FMR) in systolic heart failure on top of the state-of-the-art standards of care remains controversial. Therefore, we aimed to compare clinical outcomes of isolated MVA using the mini-invasive videothoracoscopic approach versus the state-of-the-art (CON=conservative) treatment in patients with chronic systolic heart failure and symptomatic FMR. METHODS: The study population consisted of 379 patients (age 68.9±11.0years, 62.8% males) with left ventricular (LV) systolic dysfunction, symptomatic FMR and previous heart failure hospitalization. A total of 167 patients underwent undersized MVA and 212 patients were treated conservatively. A concomitant MAZE was performed in 53 (31.7%) patients. RESULTS: In the MVA group, the periprocedural and the 30-day mortality were 1.2% and 4.8%, respectively. During the median follow-up of 7.1years (IQR 3.5-9.8years) a total of 74 (44.3%) and 138 (65.1%) died in the MVA and the CON group, respectively (p<0.001). The lowest mortality was observed in MVA combined with MAZE (22.6%; p<0.01). In Cox regression analysis, age, MVA with MAZE emerged as independent predictors of both all-cause mortality and rehospitalizations for heart failure (all p<0.05). MVA was associated with significantly greater symptomatic improvement and reduction of FMR than the conservative treatment (both p<0.001). Reverse LV remodeling was observed only in the MVA combined with MAZE group (p<0.01). CONCLUSIONS: In patients with symptomatic FMR, minimally invasive MVA, in particular in combination with MAZE, confers an independent long-term survival benefit compared with the state-of-the-art treatment.
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