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European Journal of Cardio-Thoracic Surgery, Vol 4, 394-397, Copyright © 1990 by European Association for Cardio-thoracic Surgery

ARTICLES

Are there indications for reconstructive surgery in severe mitral regurgitation after acute myocardial infarction?

DY Loisance, P Deleuze, ML Hillion and JP Cachera
Department of Cardiac Surgery, Henri Mondor Hospital, Creteil, France.

From 1972 to 1988, early surgery were performed in 26 patients with acute mitral regurgitation (MR) unresponsive to medical management complicating a recent acute myocardial infarction (AMI). The indication was acute pulmonary oedema (11), major left ventricular insufficiency (5), cardiogenic shock (10). Surgery was performed within 3 weeks following AMI. Mitral lesions were as follows: rupture of chordae tendinae (9) of papillary muscle (6), haemorrhagic necrosis of one (17) or two (9) papillary muscles. The mitral annulus was never found to be enlarged. The LV posterior wall was necrotic in 23, with a septal rupture in 3 and a giant aneurysm in 5. Valve replacement was performed in all but one patient. The 30-day mortality included 8 patients (31%). The cause of death was myocardial insufficiency in 5, early thrombosis of a disk valve in 1 and unrelated complications in 2. One patient deteriorated rapidly and had a Jarvik device implanted. Late results (1 month-15 years) showed 4 cardiac related deaths within the first year. One patient had to be transplanted after 1 year. Two patients died of non-cardiac problems at 3 months and 5 years. The probability of survival at 5 years is 43% and at 10 years 22%. In conclusion, there are still indications for early surgery in MR post AMI. Anatomical lesions of both papillary muscles and ventricular wall do not allow conservative surgery and new non-invasive technics provide a more promising strategy in such desperately ill patients.

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