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Balloon Valvuloplasty of Pulmonary Stenosis in Patients Younger than 6 Months of Age

Journal of the Korean Pediatric Society 1999;42(5):631-636.
Published online May 15, 1999.
Balloon Valvuloplasty of Pulmonary Stenosis in Patients Younger than 6 Months of Age
Yang Park, Do Jun Cho, Woo Sub Sim, In Seung Park, Eun Jung Bae, Seong Ho Kim
Department of Pediatrics, Sejong General Hospital, Pucheon, Korea
폐동맥 협착을 갖는 6개월 이하의 영유아에서 풍선 판막 성형술
박양, 조도준, 심우섭, 박인승, 배은정, 김성호
부천 세종병원 소아과
Correspondence: 
Seong Ho Kim, Email: 1
Abstract
Purpose
: Balloon valvuloplasty(BVP) is the treatment of choice for valvular pulmonary stenosis (PS). However, this procedure was usually performed in children older than 2 years. The purpose of the present study was to assess the safety and efficacy of BVP in young infants.
Methods
: Retrospective analysis of the medical records of 25 infants younger than 6 months of age who received BVP for PS including critical PS between July 1991 and September 1997 were evaluated.
Results
: The arterial oxygen saturation before and after procedure was 76.7% and 90.0%, respectively(P<0.001). Transvalvar pressure gradients measured with continuous wave Doppler echocardiography changed from 103.2¡¾27.1mmHg to 34.8¡¾14.4mmHg(P<0.001) and 29.3¡¾15.9 mmHg after 6 months(P=0.075). The systolic pressure ratio of right and left ventricle before and after procedure was decreased from 1.40¡¾0.4 to 0.74¡¾0.3(P<0.001). Successful gradient relief was achieved with initial BVP in 21 out of 25 infants. There was one procedural death and one emergency surgery after BVP. Four of the 23 remaining patients required repeated BVP.
Conclusion
: Balloon valvuloplasty in young infants is a safe and effective procedure. In patients with symptomatic severe PS, balloon valvuloplasty should be recommended at an early age.
Key Words: Balloon valvuloplasty, Infant, Pulmonary valvular stenosis


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