Balloon valvuloplasty for severe mitral valve stenosis in pregnancy. A report of 11 cases.

Balloon valvuloplasties for severe mitral stenosis were performed on 11 pregnant patients with excellent results and no complications. The mitral valve area was increased from a mean of 0.9 cm2 to 2.1 cm2. There was no clinically significant mitral regurgitation. The pregnancies proceeded normally to delivery at or near term, with no maternal or perinatal morbidity or mortality.