Journal of Chest Surgery

The Korean Society for Thoracic and Cardiovascular Surgery (대한심장혈관흉부외과학회)
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The Outcome of Cardiac Surgery in Low Birth Weight Infants

저체중 출생아의 심기형 수술의 성적

  • 성시찬 (동아대학교 의과대학 흉부외과학교실) ;
  • 김시호 (동아대학교 의과대학 흉부외과학교실) ;
  • 이영석 (동아대학교 의과대학 소아과학교실)
  • Published : 2002.06.01
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Abstract

It is known that low birth weight is a risk factor for poor outcome in cardiac surgery for many cardiac defects. We reviewed our recent surgical experiences on congenital heart defect (other than patent ductus arteriosus) in low birth weight babies. Material and Method: From September 1994 to February 2001, 31 consecutive infants weighing 2500 g or less underwent cardiac surgery with (OHS group n=12) or without cardiopulmonary bypass (CHS group n=19). A retrospective study was carried out to evaluate short-and intermediate-term outcome. Mean gestational age and age at operation were 36.9 weeks(range, 32.3-42weeks) and 32.1days (range, 0-87days) respectively. Mean body weight at birth and operation were 1972g (range, 1100-2500g) and 2105g (range, 1450-2500 g) respectively. There was no difference between the two groups in age and body weight. Defects included ventricular septal defect (VSD) (n=3), VSD with arch anomaly (n=2), total anomalous pulmonary venous return (n=2), transposition of the great arteries (TGA) (n=2), truncus arteriosus (n=2), and univentricular heart with cor triatriatum (n=1) in OHS group, and coarctation of aorta (n=7), tetralogy of Fallot (TOF) (n=3), TOF with pulmonary atresia (n=3), multiple muscular VSDs (n=1), double outlet right ventricle (n=1), pulmonary atresia with intact ventricular septum (n=2), tricuspid atresia (n=1), and TGA with multiple VSD (n=1) in CHS group. 13 patients (41.9%) were intubated pre-operatively. Result: There were 4 early deaths(＜30 days); 1 (8.3%) in OHS group and 3 (15.8%) in non-OHS group. All these early deaths were related to the pulmonary artery banding(PAB). There was no operative mortality in infants undergoing complete repair and palliative operations other than PAB. Delayed sternal closure was required in 3 patients. Prolonged postoperative mechanical ventilation (>7 days) was required in 7 patients(58.3%) in OHS and 7(38.8%) in CHS group. Late mortality occurred in 3 patients, two of which were non-cardiac. A patient in OHS group was documented to have neurologic sequelae. All the survivors except two are in NYHA class 1. Conclusion: Complete repair and palliative operations other than PAB can be performed in low birth weight infants with low operative mortality and an acceptable intermediate-term result. However, about a half of the patients required long-term postoperative mechanical ventilation.

저체중은 많은 심기형의 수술에 있어 위험인자로 알려져 있다. 이에 저체중 출생환아에 있어서의 동맥관 개존증을 제외한 여러 심기형에 대한 외과적 치료의 결과를 조사하였다. 대상 및 방법： 1994년 9월부터 2002년 2월까지 31명의 저체중 출생아를 대상으로 하였다. 심폐기를 이용한 개심술 환아(OHS군)가 12명, 비개심술환아(CHS군)가 19명이었다. 이들 환아에 대하여 술 후 중단기 성적을 알아보기 위해 환아의 병력지를 기초로 후향적 조사를 시행하였다. 태내주수는 36.9주(32.3∼42 주)였고 수술당시 평균 나이는 32.1일(0∼87 일), 출생시 체중은 1972g(1100∼2500g), 수술시 체중은 2105g(1450∼2500g)으로 OHS군과 CHS군에 차이가 없었다. 심기형은 OHS군에서는 심실중격결손증(VSD) (n=3), VSD와 대동맥궁이상(n=2), 총폐정맥환류이상(n=2), 대혈관전위증(n=2), 동맥간증(truncus arteriosus)(n=2), 삼심방증을 동반한 단심실증(n=1) 등이었고 CHS군은 대동맥축착증(n=7), 활로 4징증(n=3),활로 4징증 및 폐동맥폐쇄증(n=3), 다발성 근성 심실중격결손(n=1), 양대혈관 우심실기시증(n=1), 온전한 심실중격이 폐동맥판폐쇄증(n=2), 삼첨판폐쇄증(n=1), 대혈관전위증 및 다발성 심실중격결손(n=1) 등이었다. 13명(41.9%)의 환아에서 술 전 인공호흡이 필요하였다. 결과： 전체적으로 4례의 조기사망(30일 이내)이 발생하였다. OHS군에서 1례(8.3%), CHS군에서는 3례(15.8%)였다. 이 조기사망의 모든 예가 폐동맥교약술을 한 환아였고 완전교정이 가능하였던 환아나 폐동맥교약술을 제외한 고식적 수술에서는 수술사망이 없었다. 지연흉골봉합이 3례에서 필요하였고 술 후 7일 이상 장기간 인공호흡이 필요하였던 경우가 OHS군과 CHS 군에서 각각 7례로 58.3%, 38.8%의 빈도였다. 만기사망이 3례 발생하였는데 이 중 2례는 심장과 관련이 없는 사망이었다. OHS군 1명에서 술 후 뇌합병증이 발견되었다. 2명을 제외한 모든 생존자에서 현재 NYHA class I의 상태로 성장하고 있다. 결론： 저체중 출생 환아에서의 심기형은 완전교정술이 가능한 경우와 폐동맥교약술을 제외한 고식적 수술이 필요한 경우 낮은 수술사망률로 교정될 수 있었으며 중기성적도 양호하였다. 그러나 술 후 비교적 높은 빈도에서 장기간의 인공호흡이 필요하였다.

Keywords

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