Late Coronary Bypass Graft Flow: Quantitative Assessment by Roentgendensitometry

Abstract Quantitative assessment of the flow in 45 saphenous vein aortocoronary bypass grafts in 30 patients was performed by a roentgendensitometric technique. Details of the technique are given. Mean graft flow for all grafts measured in the early postoperative period (two weeks) and again in the late postoperative period (six months to 3 years; average, 1.5 years) significantly decreased (72.6 ± 34.7 to 57.4 ± 28.6 ml/min; p p