관상동맥 우회술의 장기 임상성적 = The Long-term Clinical Outcomes after Coronary Artery Bypass Graft Surgery

다국어 초록 (Multilingual Abstract)

Background: Coronary artery bypass grafting (CABG) is the standard surgical treatment for coronary artery disease. Although there are many clinical reviews of the long term results after CABG in the Western countries, not many such studies have been done for Korea. Therefore, we reviewed the long term clinical results for the patients who underwent CABG at our hospital. Material and Method: We retrospectively reviewed the medical records of 342 patients who underwent CABG at our hospital from February 1984 to December 2006, which is when CABG was first performed in our institution. A total of 286 patients (83.6%) were able to be followed-up, and the mean follow-up period was 75.7±46.1 months. Result: The early mortality rate was 5.6%, and late mortality rate was 23.1%. The one-year survival rate, the five-year survival rate, the ten-year survival rate and the fifteen-year survival rate were 91.5%, 82.1%, 60.7% and 50.0%, respectively. The survival rate was significantly lower for the patients over the age of 60 (p=0.002) and for those with diabetes mellitus (p=0.000), hypertension (p=0.002), multivessel disease (p=0.006) and left ventricular dysfunction (p=0.015). No significant difference was observed between the genders. Multivariate analysis showed that the statistically significant risk factors were diabetes mellitus (p=0.001), age (p=0.005) and those cases for which the left internal thoracic artery was not used (p=0.037). Conclusion: CABG is the effective method of treatment for coronary artery disease. Therefore, active usage of the internal thoracic artery and appropriate medical treatment after surgery, and especially for diabetes mellitus patients, are mandatory for achieving good long-term survival.

국문 초록 (Abstract)

배경: 관상동맥우회술은 관상동맥질환의 대표적인 치료법으로 서구에서는 장기 성적에 관하여 많은 보고들이 있으나, 우리나라에서는 매우 드물다. 따라서, 본원에서의 장기 임상성적에 관하여 알아보고자 하였다. 대상 및 방법: 1984년 2월 본원에서 처음으로 관상동맥 우회로술을 시행한 이후 2006년 12월 31일까지 시행하였던 342명의 환자를 대상으로 하였으며, 의무기록을 토대로 후향적으로 분석하였다. 총 286명(83.6%)에서 추적관찰이 가능하였으며, 평균추적관찰기간은 75.7±46.1개월이었다. 　결과: 조기사망은 5.6%였으며, 만기사망은 23.1%였다. 1년 생존율은 91.5%였으며, 5년 생존율은 82.1%, 10년 생존율은 60.7%, 15년 생존율은 50.0%였다. 60세 이상의 고령의 환자(p=0.002), 당뇨(p=0.000), 고혈압(p=0.002), 다중혈관질환 환자(p=0.006), 그리고, 좌심실 기능부전 환자들(p=0.015) 환자들에서 생존율이 유의하게 낮았으며, 성별은 장기생존에 차이가 없는 것으로 나타났다. 다변량 분석에서는 당뇨(p=0.001), 나이(p=0.005), 좌내흉동맥을 사용하지 않는 경우(p=0.037)가 유의한 위험인자로 나타났다. 결론: 관상동맥우회술은 관상동맥질환 환자에게 있어서 효과적인 치료방법이라고 생각되며, 장기 생존을 위해서는 내흉동맥의 적극적인 사용과 당뇨환자에서 술후 혈당조절과 같은 적절한 약물치료와 외래추적관찰이 필요할 것으로 생각된다.

참고문헌 (Reference)

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