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  • Title: Changes of myocardial function after combined coronary revascularization and mitral valve downsizing in patients with ischemic mitral regurgitation and advanced cardiomyopathy.
    Author: Geidel S, Schneider C, Lass M, Groth G, Aslan H, Boczor S, Kuck KH, Ostermeyer J.
    Journal: Thorac Cardiovasc Surg; 2007 Feb; 55(1):1-6. PubMed ID: 17285466.
    Abstract:
    OBJECTIVE: At present not much data is available on changes in myocardial function after combined coronary artery bypass grafting (CABG) and downsizing of the mitral valve (MV) by restrictive prosthetic ring annuloplasty in patients with chronic ischemic mitral regurgitation (IMR) and advanced cardiomyopathy. METHODS: 63 patients with coronary artery disease, chronic IMR grade 3 - 4+, ischemic cardiomyopathy and reduced left ventricular (LV) function (LV ejection fraction [LVEF] of 30 +/- 9 %; range 12 - 45 %) underwent combined CABG and MV downsizing. Clinical follow-up and serial echocardiographic studies were performed to assess survival, New York Heart Association (NYHA) class, mitral regurgitation (MR), leaflet coaptation height (LCH), left atrial (LA) and LV end-systolic/end-diastolic dimensions/volumes and volume indices (LVESD, -EDD; LVESV, -EDV; LVESVI, -EDVI), fractional shortening (FS) and LVEF to evaluate the changes in myocardial function after surgery. RESULTS: Early mortality (< 30 days) was 1.6 %, survival at follow-up was 95 % (3 +/- 1 months) and 83 % (2 +/- 1 years), respectively. Functional class improved significantly after surgery; recurrence of relevant MR was absent in all patients. In general, LA/LV dimensions/volumes and volume indices, FS and LVEF improved significantly, even in patients with already severely reduced preoperative LV function (LVEF </= 25 %, n = 23), a significant improvement of myocardial function was observed. CONCLUSION: Combined MV downsizing and CABG surgery can be performed with low early and late mortality, resulting in a significant improvement of myocardial function and without MR recurrence at short-term and mid-term follow-up.
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