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  • Title: [Effectiveness of surgical repair of mitral regurgitation concomitant with dilated cardiomyopathy].
    Author: Tomita T, Nakatani S, Eishi K, Takemura T, Takasawa A, Koyanagi H, Kameda Y, Kitamura S, Komamura K, Yasumura Y, Yamagishi M, Miyatake K.
    Journal: J Cardiol; 1998 Dec; 32(6):391-6. PubMed ID: 9914956.
    Abstract:
    Dilated cardiomyopathy (DCM) is often accompanied by severe mitral regurgitation (MR) which deteriorates the clinical course. Mitral reconstruction for severe MR may improve the symptoms and prognosis. Five patients with DCM and one patient with dilated phase of hypertrophic cardiomyopathy underwent mitral reconstruction for severe MR (4 males, 2 females, mean age 50 +/- 17 years) from 1983 to 1995. Their New York Heart Association (NYHA) functional class and findings of echocardiography and cardiac catheterization were compared before and after surgery. Five patients underwent annuloplasty and one patient underwent mechanical valve replacement. There was no operative or in-hospital death. NYHA class improved from 3.2 to 1.8 (p < 0.05). The degree of MR was reduced from 3.5 to 1.2 (p < 0.05), and left ventricular end-diastolic pressure decreased from 18 +/- 7 to 13 +/- 8 mmHg (p < 0.05). Left ventricular fractional shortening, ejection fraction and cardiac index (2.4 +/- 0.4 to 2.7 +/- 1.1 l/min/m2) did not change significantly. Two patients died within one year due to exacerbation of congestive heart failure (2.5 month later) or sudden death (6 months later). Three patients died at 21 months, 5 and 8 years after the operation (renal insufficiency, heart failure, sudden death, respectively). Mitral reconstruction improved the symptoms in patients with DCM and severe MR in the short term. However, 5 of 6 patients died in the intermediate or long-term. Mitral reconstruction may be a therapeutic option for early outcome in patients with refractory congestive heart failure due to DCM and severe MR.
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