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  • Title: Posterior pericardial annuloplasty in ischemic mitral regurgitation.
    Author: Omay O, Ozker E, Indelen C, Baskurt M, Suzer K, Gunay I.
    Journal: Heart Surg Forum; 2009 Oct; 12(5):E285-90. PubMed ID: 19833596.
    Abstract:
    BACKGROUND: Ischemic mitral regurgitation (IMR) is an important risk factor in coronary artery bypass grafting (CABG) operations. The decision to perform concomitant mitral annuloplasty along with the CABG depends on the surgeon's choice. The aim of this study was to evaluate the results of posterior annuloplasty procedures with autologous pericardium performed in patients with midadvanced and advanced functional ischemic mitral regurgitation. METHODS: Study participants were 36 patients with IMR (mean age 59 +/- 10 years) who underwent posterior pericardial annuloplasty and CABG operations between 2002 and 2007. Preoperative and postoperative (mean follow-up 18 +/- 1 months) MR grade, left atrium diameter, left ventricle end systolic diameter, left ventricle end diastolic diameter, left ventricle ejection fraction, and mitral valve gradients were measured with transthoracic echocardiography. RESULTS: There was one late mortality (2, 8%) but none of the patients required reoperation for residual MR. We did not observe thromboembolism, bleeding, or infective endocarditis. The mean MR grade decreased from 3.4 +/- 0.5 to 0.5 +/- 0.6 (P < .01), left atrium diameter decreased from 45.3 +/- 5.5 mm to 43.2 +/- 3.8 mm (P < .01), left ventricle end diastolic diameter decreased from 53.2 +/- 5.6 mm to 50.9 +/- 5.5 mm (P < .01), and left ventricle end systolic diameter decreased from 39.7 +/- 5.8 mm to 34.6 +/- 6.5 mm (P < .01), whereas mean left ventricle ejection fraction increased from 37.9% +/- 6.1% to 43.7% +/- 7.3% (P < .01). In the late postoperative term, the functional capacity of the patients increased from mean New York Heart Association class 2.6 +/- 0.9 to 1.1 +/- 0.5. We did not observe any gradient in the mitral valve preoperatively in any patient, but in the follow-up, the mean gradient increased to 1.3 +/- 2.1 mmHg (P < .01). CONCLUSION: Posterior pericardial annuloplasty with CABG in the treatment of IMR provides efficient mitral repair and significant decrease in the left atrium and left ventricle diameters, and provides a significant increase in left ventricular function. These results show IMR to be as effective as the other annuloplasty techniques. IMR is performed with autologous material and therefore does not entail any risk of complications from prosthetic material and is highly cost-effective.
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