Objectives:The present study was performed to determine the outcome of percutanous balloon mitral valvotomy in pregnant patients either with severe MS (MVA ≤ 1.0 cm2, with or without symptoms),or symptomatic moderate MS (MVA 1.0 cm2 to 1.5 cm2).
Methods: From January 2002 to January 2015, 84 pregnant women with mitral stenosis (MS) underwent BMV. We retrospectively analyzed the pregnancy outcomes, Apgar score of the neonates born to mother after BMV in a pregnant patients with mitral stenosis (MS).
Results: All patients underwent clinical, electrocardiography and echocardiography evaluations before the procedure. BMV resulted in a significant increase in mitral valve area (MVA) from 0.92 ± 0.2 to 2.06 ± 0.3 cm2 (p<0.0001). Mean gestational age (GA) at BMV was 22.43 ± 5.70 and that at delivery was 37.39 ± 2 weeks. Full-term births, either vaginal or cesarean, were observed in 56 (66.67%) pregnancies whereas 24 (28.57%) had preterm delivery. Three patients had abortions and there was one macerated still-birth. There were no embolic events or death related to the procedure. Out of 81 live newborns, 74 (91.36%) newborns had normal birth weight (≥ 2.5 kg). Mean Apgar scores at 1, 5 and 10 minutes after birth were 5.98 ± 0.68, 6.98 ± 0.72, and 8.23 ± 0.45 respectively. Five-minute Apgar score below 7 was found in 19 (23.46%) newborns.
Conclusion: BMV is safe and effective intervention for MS during pregnancy with favorable pregnancy and short-term neonatal outcomes.