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South African Journal of Surgery

versión On-line ISSN 2078-5151
versión impresa ISSN 0038-2361

Resumen

KISTAN, D; BOOYSEN, M; ALEXANDER, G  y  MADIBA, TE. A South Africa tertiary centre experience with redo mitral valve replacement. S. Afr. j. surg. [online]. 2022, vol.60, n.1, pp.44-48. ISSN 2078-5151.  http://dx.doi.org/10.17159/2078-5151/2022/v60n1a3192.

BACKGROUND: Severe cardiac failure from mechanical mitral valve thrombosis due to poor warfarin control is a major cause of emergency redo mitral valve replacement (MVR) in South Africa. This study aimed to review the outcomes of redo MVR in patients presenting with mitral valve failure to a tertiary South African centreMETHODS: Retrospective chart review of patients undergoing redo MVR over a 10-year period (2005-2014). Patient demographics, aetiology of valve dysfunction, preoperative clinical assessment and outcomes were analysedRESULTS: Sixty-four patients had 80 mitral valve procedures. The M:F ratio was 1:2.8 and the median age was 18 (IQR 14-28.5) and 25 (iQR 18-40) at initial surgery and at redo surgery, respectively. Median interval between original and redo MVRs was 47.5 (IQR 7.5-124) months. Rheumatic valve disease was the original pathology in 58 patients (90.6%). Fifty-two patients underwent a single redo MVR and 12 patients had multiple redo MVRs. Fifty-eight (72.5%) were emergency redo procedures. Prosthetic valve thrombosis was present in 73.8%. Ten patients (15.6%) developed postoperative complications. The median hospital stay and ICU stay were 19 (IQR 12-27.5) days and 4 (IQR 3-7) days, respectively. Two patients died in the postoperative period (3.1%). The mean patient follow-up was 42 months. Three patients died during follow-upCONCLUSION: The majority of redo MVR procedures were undertaken as an emergency with valve thrombosis being the most common aetiology. The mortality rate was 3.1% and postoperative complication rate was 15.6%

Palabras clave : mitral valve replacement; mitral valve procedure; redo surgery.

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