막성주위형 심실중격결손중의 봉합시 경삼첨판륜 절개방법의 외과적 치료효과

Effects on Surgical Repair of VSD by TATV

  • 곽몽주 (전남대학교 의과대학 흉부외과학교실) ;
  • 김보영 (광주 기독병원 흉부외과)
  • Gwak, Mong-Ju (Department of Thoracic and Cardiovascular Surgery, College of Medicine, Chunnam University Hospital) ;
  • Kim, Bo-Yeong (Department of Thoracic and Cadiovascular Surgery, Kwang ju Christian Hospital)
  • 발행 : 1997.09.01

초록

막성주위형 심실중격결손증(Perimembranous ventricular septal defect, PMVSD)은 심실중격결손증(ventriculal septal defect, VSD)의 가장 흔한 형태이며, 그 수술방법 또한 다양하다. 막성주위형 심실중격결손증(PMVSD)을 교정하는 대표적인 수술방법은 우심방을 절개하여 결손부위를 직접보고 펫취봉합하는 방법이다. 그러나 상부 경계가 잘 안보일때 혹은 건삭(ch(wda)의 VSD경계부위 부착의 원인으로 인하여 다발성 VSD로 보일때 외과 의사에 따라서 경삼첨판륜 절개방법(transannular approach of tricuspid valve, TATV)을 가끔 이용하고 있다. 그 러나 이 수술방법은 삼첨판륜을 절개하기때문에, 방실판막의 개폐작용에 문제가 생길 수 있다고 취급되어왔 다. 본 연구는 경삼첨판륜 절개방법(TATV)이 막성주위형 심실중격결손증(PMVSD) 수술시 안전한 방법인지를 알아보고자 하였다. 최근 5년간 단독형 막성주위형 심실중격결손증 96례를 대상으로 그중 28례(29%)에서 경삼첨판륜 절개방법 (TATlr)으로 VSD를 봉합하였으며, 수술후 3개월에서 33개월동안 추적관찰하여 다음과 같은 결론을 얻었다. 1. 수술시 나이는 4개월에서 38세였는데, 5세이상에서 17(6 %)례로 가장 많았다. 2. 수술전 폐1체 혈류비는 1에서 2.8이었고, 22fll(79%)에서 2이하였다. 3. 수축기 폐동맥압은 8례에서 30 mmllg미만, 17례에서 30-50 mmHg사이, 3례에서 50 mmHg이상으로 25례 (89%)에서 50 mmHg이하였다. 4. 삼첨판폐쇄부전은 수술전 12례에서 없었고, 6례에서 미세했고, 3례에서 경했고, 5례에서 중등도 2례에서 중증도였는데,수술후에는 4례에서 경했고, 6례에서 미세했고, 18례에서는 없어져, 대체로 수술후 감소하거나 없어지는 경향을 보였다. 5. 좌-우 단락양이 적은 막성주위형 심실중격결손증(PMVSD)에서 삼첨판맹낭(tricuspid valve pouch 19례), 우심실 유출로폐쇄(4례), 아급성심내막염(1례) 및 동반질환을 부가적인 수술적응으로 삼았다. 6. 수술후 관찰결과 사망률은 없었고, 잔존 심실중격결손증도 없었다. 이상의 결과로 경삼첨판륜 절개방법(TATV)은 삼침판맹낭을 가지고 있는 막성주위형 심실중격결손증 (PMVSD) 수술시 좋은 방법이며, 또한 막성주위형 심실중격결손증(PMVSD)에서 수술시 시야를 좋게하고 수술후 삼첨판폐쇄부전에 악영향을 미치지 않는 결과로 안전하고 효과적인 방법으로 사료된다.

Perimembranous ventri ular septal defects(PMVSDS) are the most common type of ventricular septal defects(VSDs) and consist morphologically of deficiency of the membranous septum and variable portions of the adjacent muscular septum. Repair of VSD has begun via a right ventriculotomy. Even with this exposure, however, it mght lead to ventricular dysfunction. Transatrial exposure of VSDs is luiown to a versatile approach to PMVSDS and even malaligunent defects can be repaired by this method. Although transatrial exposure can be improved by taking down'the atrioventricular valve at the annulus, surgeons have been hesitant to do so because of concern for valvular competence. Therefore, this study was undertaken to clarity the effects of transamlular approach of tricuspid valve (TATV) at operation of PMVSD. During last 5 years, twenty eight cases from 96 patients of PMVSD were closed by TATV and follow up study was done from 3 months to 33 months and results were obtained as follows. 1. Age at operation was fr m 4 months to 38 years and most patients(17, 62%) were above 5 years. 2. Preoperative pulmonary-systemic flow ratio(QPIQS) was ranged from 1 to 2.8 and 22 patients(79%) were less than 2. 3. Peak systolic pulmonary artery pressure was below 30mmHg in 8, 30-50mmHg in 17, above 50mmHg in 3 patients and 25 patients(89%) were less than 50mmHg. 4. Preoperative tricuspid regurgitation(TR) is none in 12, trivial in 6, mild in 3, moderate in 5, severe in 2 patients but postoperative TR was none in 18, trivial in 6, mild in 4 patients, so TR in most patients had decreased or not. 5. Indications for operation were based on the presence of a significant shunt. However, in patients with small shunts, indications for operation were included additional factors, tricuspid valve pouch, RVOT obstruction(right ventricular outflow tract obstruction), subacute bacterial endocarditis and associated anomalies. 6. There were no hospital deaths and residual shunts in postoperative echocardiography. Therefore TATV is especially a good method in PMVSn where patients have trcuspid valve pouch. And it is a safe and effective technique that improves exposure for PMVSD repair and does not adversely affect tricuspid valvular competence.

키워드

참고문헌

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