Free Flow in Internal Thoracic Artery and Internal Thoracic Artery-Radial Artery Composite Graft.
- Author:
Jong Bum CHOI
1
;
Kwang Pyo KOH
;
Mee Kyung LEE
;
Dae Woong RYU
;
Sam Youn LEE
Author Information
1. Department of Thoracic and Cardiovascular Surgery, Wonkwang University School of Medicine, Iksan, Jeonbuk, Korea. jobchoi@wonkwang.ac.kr
- Publication Type:Case Report
- Keywords:
Coronary artery bypass;
Internal thoracic artery;
Radial artery;
Conduits
- MeSH:
Arteries*;
Constriction;
Coronary Artery Bypass;
Humans;
Mammary Arteries*;
Papaverine;
Radial Artery;
Transplants*
- From:The Korean Journal of Thoracic and Cardiovascular Surgery
2004;37(10):839-844
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: The Y-composite graft of internal thoracic artery and radial artery is commonly used in coronary bypass surgery. The aim of this study is to look for a way to raise the free flow of the internal thoracic graft and to see flow dynamics of the Y-graft. MATERIAL AND METHOD: In 15 patients undergoing coronary bypass surgery, free flow of the in-situ internal thoracic artery graft was measured using two different papaverine application methods; extraluminal papaverine spray in 7 patients and intraluminal papaverine injection in 8. In 18 other patients for whom the Y-graft was used, total free flow and flow changes from the two ends were measured. RESULT: The free flow of the in-situ internal thoracic artery graft almost doubled with internal papaverine injection than with external papaverine spray (47.7+/-9.6 mL/min vs. 100.8+/-26.3 mL/min, p<0.001). Total flow of the Y-composite graft was significantly more than either flow of the internal thoracic artery end or radial artery graft end (173.3+/-45.3 mL/min vs. 121.1+/-34.3 mL/min or 117.5+/-42.8 mL/min). When both ends of the Y-composite graft were opened, free flows from the two ends were similar (85.4+/-27.8 mL/min vs. 87.9+/-42.4 mL/min, p=0.772). The flow of one end of the Y-composite graft was increased significantly by clamping of the other-end than when both ends were opened. CONCLUSION: Intraluminal papaverine injection is very effective in raising free flow of the internal thoracic artery graft, and the free flow of the Y-composite graft of in-situ internal thoracic artery and free radial artery graft is more than that of the in-situ internal thoracic artery graft. The flow of one end flow of the Y-graft may be altered by the flow change of the other end.
