| 摘 要： | Objective To review the experience of using the transit time flow measurement (TTFM) in coronary artery bypass grafting (CABG). Methods From Sept. 2001 to May, 2002,90 cases underwent CABG. Among them, 40 cases with off-pump beating heart (OPCAB) and 50 with conventional coronary bypass grafting. All graft patency were verified intraoperatinlly with TTFM. The flow value of left internal mammary artery (LIMA) in 30 cases was also detected by the same way before grafting to left anterior descending (LAD). Results There was no operative death and severe complications. The mean flow value of LIMA in 30 cases was (42. 9 ± 33. 0) ml/min. The actual blood flow value, measured simultaneously by exsanguination was (37.4 ± 28. 8)ml/ min. Excel-lent correlation was demonstrated. The mean pulsatility index value (PI) was 1. 00 ± 0. 04. The flow curve showed both diastolic and systolic filling. The mean flow value of LIMA to LAD.saphenous vein graft (SVG) or radial artery (RA) to circumflex coronary artery (LCX)
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