Abstract
Twenty-five pregnant women with symptomatic mitral valve stenosis (mean valve area, 1.1 +/- 0.25 cm2) were managed by initiation or modification of beta-adrenergic receptor blockade with the use of either propranolol or atenolol. Significant improvement of symptoms occurred in 23 patients (92%) (p less than 0.01); the mean maternal heart rate was reduced significantly from 86 +/- 4 to 78 +/- 5 beats/min (p less than 0.0001). The overall fetal heart rate ranged between 130 to 150 beats/min during treatment. Only two patients required urgent closed mitral valvotomy, after pulmonary edema developed as a result of poor compliance to beta-blockade. All patients were safely delivered of infants at term. Fetal heart rates ranged between 120 to 140 beats/min at delivery. There was no maternal or fetal death. Pregnant woman with symptomatic mitral valve stenosis can be safely managed with beta-blockade, giving significant reduction in the incidence of pulmonary edema with no unwanted neonatal side effect.
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