[Surgical treatment by valve replacement and aorto-coronary bypass in mitral valve insufficiency caused by chronic dysfunction of the posterior papillary muscle].
Nine patients with cardiac failure which was refractory to medical treatment, and which was caused by chronic malfunction of the posterior papillary muscle, as a result of a myocardial infarction, were studied by cardiac catheterisation and coronary arteriography. The mean pulmonary capillary pressure was 31+/-16 mm of mercury with a nu wave at 51+/-27 mm of mercury. The end diastolic volume was increased (141+/-68 ml/m2) and the ejection fraction lowered (0.40+/-0.13). The left ventricle had overall hypokinesia in 5 patients and akinesia of the inferior wall, representing 21+/-24% of the end diastolic perimeter, in 3 others. All these patients had significant lesions of two or three of the main coronary trunks. At operation lengthening of the posterior papillary muscle and/or the cordae was found. All patients had a replacement mitral valve of the Starr-Edwards type, associated with an aorto-coronary bypass of the anterior descending artery. The operative mortality was zero. At a mean follow-up period of 21 months, there had been no late death, and all the patients were improved.
D000368:Aged; D009202:Cardiomyopathies / Q000150:complications; D001026:Coronary Artery Bypass; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery*; D008944:Mitral Valve Insufficiency / Q000209:etiology / Q000601:surgery*; D009203:Myocardial Infarction / Q000150:complications; D010210:Papillary Muscles
Traitement chirurgical par remplacement valvulaire et pontage aorto-coronaire de l'insuffisance mitrale par dysfonctionnement chronique du pilier postérieur.