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  • Title: Extending the scope of mitral valve repair in active endocarditis.
    Author: de Kerchove L, Price J, Tamer S, Glineur D, Momeni M, Noirhomme P, ElKhoury G.
    Journal: J Thorac Cardiovasc Surg; 2012 Apr; 143(4 Suppl):S91-5. PubMed ID: 22306214.
    Abstract:
    OBJECTIVE: During the last 2 decades, we have applied a repair-oriented surgical approach to patients with active mitral valve endocarditis. We retrospectively analyzed the long-term outcomes with this repair-oriented approach. METHOD: Between 1991 and 2010, 137 patients underwent operation for active mitral valve endocarditis; of these, 109 patients (80%) had mitral valve repair and represent the study cohort. Repair techniques without patch extension (no-patch techniques) include triangular or quadrangular resection (n = 49), sliding plasty (n = 24), neochordae (n = 18), chordal transfer (n = 12), and others (n = 5). Repair techniques using patch extension (patch techniques) included pericardium (n = 42), tricuspid autograft (n = 8), flip-over technique (n = 7), and partial mitral valve homograft (n = 5). Patches were used in 67 patients (61%). Ring annuloplasty was performed in 60 patients, and a pericardial band was used in 13 patients. Clinical and echocardiographic follow-up were performed. Median follow-up was 48 months. RESULTS: Hospital mortality was 16%. At 8 years, overall survival was 62% ± 10% with no differences between patients with or without patch repair (P = .5). Freedom from mitral valve repair failure was 81% ± 14% in patients with patch repair and 90% ± 10% in patients without patch repair (P = .09). The rate of thromboembolic or bleeding event was 1% per patient-year, and the rate of endocarditis recurrence was 0.3% per patient-year. Univariable predictors of mortality were age more than 70 years (P < .0001), perivalvular abscess (P = .002), diabetes mellitus (P = .0002), and renal failure (P = .04). Predictors of repair failure were renal failure (P = .035) and perivalvular abscess (P = .033). CONCLUSIONS: In active mitral valve endocarditis, a repair-oriented surgical approach achieves a reparability rate of 80% with acceptable morbidity and good long-term results. The use of patch techniques offers a durability rate that approximates the rate obtained with the no-patch techniques.
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