Randomised to vein distension pressure (n=96) Randomised to vein distension pressure (n=96) Randomised to vein distension pressure (n=96) Randomised to vein distension pressure (n=96) Randomised to vein harvest technique (n=96) Randomised to vein harvest technique (n=96) Randomised to vein harvest technique (n=96) Randomised to vein harvest technique (n=96) Overall (n=96) Overall (n=96)
High (Conventional) (n=48) High (Conventional) (n=48) Low (Systemic) (n=48) Low (Systemic) (n=48) Conventional (n=45) Conventional (n=45) Pedicled (n=51) Pedicled (n=51)
n % n % n % n % n %
BYPASS DATA
Duration of operation (minutes) Median (IQR) 180.0 (160.5, 210.5) 180.0 (160.0, 195.0) 180.0 (165.0, 200.0) 182.0 (160.0, 210.0) 180.0 (160.0, 207.0)
Type of operation: On Pump 16/48 33% 12/48 25% 12/45 27% 16/51 31% 28/96 29%
If On Pump:
Bypass duration (mins) Median (IQR) 79.0 (55.5, 111.5) 84.0 (70.0, 87.5) 78.0 (67.5, 95.5) 84.0 (63.0, 103.5) 81.5 (67.5, 100.5)
Cross clamp duration (mins) Median (IQR) 46.0 (34.0, 65.5) 42.5 (35.5, 47.0) 44.0 (37.5, 52.5) 43.5 (32.5, 58.0) 44.0 (35.0, 56.5)
Temperature: Warm 14/16 88% 11/12 92% 10/12 83% 15/16 94% 25/28 89%
Cooled 2/16 13% 1/12 8% 2/12 17% 1/16 6% 3/28 11%
Grafts
Mean number of grafts 2.9 0.8 2.9 0.6 2.9 0.7 2.8 0.7 2.9 0.7
Saphenous vein successfully harvested? * 44/47 94% 48/48 100% 44/45 98% 48/50 96% 92/95 97%