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Arq. bras. cardiol ; 75(3): 215-24, set. 2000. tab, graf
Article Dans Portugais, Anglais | LILACS | ID: lil-274142

Résumé

OBJECTIVE: To identifity characteristics associated with complications during pregnancy and puerperium in patients with rheumatic mitral stenosis. METHODS: Forty-one pregnant women (forty-five pregnancies) with mitral stenosis, followed-up from 1991 to 1999 were retrospectively evaluated. Predictor variables: the mitral valve area (MVA), measured by echocardiogram, and functional class (FC) before pregnancy (NYHA criteria).Maternal events: progression of heart failure, need for cardiac surgery or balloon mitral valvulotomy, death, and thromboembolism. Fetal/neonatal events: abortion, fetal or neonatal death, prematurity or low birth weight (<2,500g), and extended stay in the nursery or hospitalization in newborn ICU. RESULTS: The mean + or - SD of age of the patients was 28.8 + or - 4.6 years. The eventful and uneventful patients were similar in age and percentage of first pregnancies. As compared with the level 1 MVA, the relative risk (RR) of maternal events was 5.5 (95 per cent confidence interval (CI) =0.8-39.7) for level 2 MVA and 11.4 (95 per cent CI=1.7-74.5) for level 3 MVA. The prepregnancy FC (FC > or = II and III versus I) was also associated with a risk for maternal events (RR=2.7; 95 per cent CI=1.4-5.3).MVA and FC were not importantly associated with these events, although a smaller frequency of fetal/neonatal events was observed in patients who had undergone balloon valvulotomy. CONCLUSION: In pregnant women with mitral stenosis, the MVA and the FC are strongly associated with maternal complications but are not associated with fetal/neonatal events. Balloon mitral valvulotomy could have contributed to reducing the risks of fetal/neonatal events in the more symptomatic patients who had to undergo this procedure during pregnancy.


Sujets)
Humains , Femelle , Grossesse , Adulte , Sténose mitrale/physiopathologie , Période du postpartum , Complications cardiovasculaires de la grossesse/physiopathologie , Rhumatisme cardiaque/physiopathologie , Sténose mitrale/complications , Sténose mitrale/thérapie , Complications de la grossesse/physiopathologie , Pronostic , Études rétrospectives , Rhumatisme cardiaque/complications , Rhumatisme cardiaque/thérapie , Facteurs de risque
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