관상동맥 우회술 시행 후 증상이 있는 환자에서 시행한 관상동맥 조영술의 분석

Background: We analyzed post-operative angiography performed in symptomatic patients to evaluate the patency rates and the roles of grafts. Material and Method: We reviewed 52 (15%) coronary angiograms performed for recurrent angina after prior coronary artery bypass surgery from January 1995 to June 2005. A total of 345 patients underwent coronary artery bypass surgery during this period. There were 41 men and 11 women and the mean age was $64.07{\pm}15.58$ years. The median period from operation to re-angiogram was 68.5 months (range, 1 to 126 months). The numbers of grafts and peripheral anastomoses were 42 and 43 for internal thoracic artery (ITA), 14 and 20 for radial artery (RA), and 49 and 89 for saphenous vein. The mean number of anastomosis was 2.9 per patient, Result: The patency rates of ITA, RA and saphenous vein graft (SVG) were 37/43 (86%), 17/20 (85%) and 34/89 (38.2%). The patency rate of arterial grafts was significantly higher than that of SVG (p< 0.001) and the patency rate of the RA was comparable to that of ITA (p=0.942). The patency rate of sequential SVGs was higher than that of single SVG (40.3% vs 31.8%, p=0.478) and the patency rate of proximal segments in sequential anastomosis was higher than that in single anastomsis (55.6% vs 31.8%, p=0.097), but statistically not significant. Conclusion: Arterial grafts have markedly superior patency rates than SVGs, so consideration should be given to the vigorous use of arterial grafts. The patency rate of the RA was comparable to that of ITA. 배경: 관상동맥 우회술 후 증상이 있는 환자에서 시행한 관상동맥 조영술 소견을 분석함으로써 사용된 이식 혈관들의 개존율과 도관으로서의 유용성을 알아보고자 하였다. 대상 및 방법: 1995년 1월부터 2005년 6월까지 관상동맥 우회술을 시행 받은 총 345명의 환자 중 흉통을 호소하여 관상동맥 조영술을 시행한 52명(15%)을 대상으로 하였다. 성별은 남자 41명, 여자 11명이었고 평균 연령은 $64.07{\pm}15.58$세 였다. 수술에서 관상동맥 조영술까지의 기간은 중앙값 68.5개월($1{\sim}126$개월)이었다. 사용된 도관과 문합수는 내흉동맥 42개로 43개소 문합, 요골동맥은 14개로 20개소 문합, 복재정 맥은 49개로 89개소를 문합하여 환자 1명당 평균 2.9개의 문합이 시행되었다. 결과: 내흉동맥, 요골동맥, 복재정맥의 개존율은 각각 86% (37/43), 85% (17/20), 38.2% (34/89)였다. 동맥 도관의 개존율은 복재정맥의 개존율보다 의미 있게 높았고(p