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  • Title: [A case of scheduled mitral valve replacement for mitral regurgitation caused by papillary muscle rupture after acute myocardial infarction].
    Author: Minakata K, Konishi Y, Matsumoto M, Miwa S, Yuasa S.
    Journal: Nihon Kyobu Geka Gakkai Zasshi; 1997 Apr; 45(4):639-44. PubMed ID: 9155141.
    Abstract:
    Mitral regurgitation caused by papillary muscle rupture after acute myocardial infarction has poor prognosis, and it is the usual course for such cases in cardiogenic shock to be performed early mitral valve replacement. However, we recently experienced a case of successful scheduled mitral valve replacement for mitral regurgitation caused by rupture of the posterior papillary muscle after acute inferior myocardial infarction. The patient was a 63-year-old woman who admitted to a hospital with back pain and dyspnea and was diagnosed as pulmonary edema due to mitral regurgitation after acute myocardial infarction. She was treated with dopamine and diuretic agents effectively, but not weaned from these drugs. Then, she was transferred to our hospital. At the admission, she was in the NYHA class II due to mitral regurgitation and inferior myocardial infarction with papillary muscle rupture revealed by transesophageal echocardiography. Cardiac catheterization demonstrated total occlusion of the proximal right coronary artery (segment #2) and mitral regurgitation in Sellers III. The patient underwent a successful scheduled mitral valve replacement with SJM 27M concomitant with coronary artery bypass grafting 47 days after the onset of acute mitral regurgitation. There are few reports that successful surgical treatment for papillary muscle rupture was done more than 4 weeks after the onset of mitral regurgitation in Japan.
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