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Table 3 TTFM values of bypass graft

From: Transit time flow measurement predicts graft patency in off-pump coronary artery bypass grafting upon 5-year angiographic follow-up

 

MGF (mL/min)

PI

DF (%)

LIMA

   

Patent (n = 192)

35.6 ± 21.4 (6, 130)

2.2 ± 0.8 (0.9, 5.0)

71.0 ± 8.5 (35, 99)

Occlusion (n = 10)

14.3 ± 5.8 (10, 27)

3.2 ± 1.4 (1.5, 5.8)

68.5 ± 9.1 (56, 80)

P value

< 0.001

0.049

0.357

DIAG

   

Patent (n = 80)

36.6 ± 20.0 (14, 89)

2.3 ± 0.9 (0.9, 5.7)

71.8 ± 8.3 (51, 97)

Occlusion (n = 27)

12.8 ± 6.5 (5, 30)

2.7 ± 1.0 (1.2, 4.4)

70.8 ± 13.1 (41, 96)

P value

< 0.001

0.044

0.702

OM

   

Patent (n = 95)

37.4 ± 21.1 (15, 125)

2.3 ± 1.0 (0.5, 8.6)

71.4 ± 9.3 (49, 92)

Occlusion (n = 34)

13.6 ± 6.3 (4, 34)

3.4 ± 1.7 (0.9, 10.6)

62.1 ± 9.9 (47, 83)

P value

< 0.001

0.001

 < 0.001

PDA

   

Patent (n = 91)

32.3 ± 19.9 (10, 86)

2.3 ± 1.3 (0.8, 9.6)

66.5 ± 9.8 (27, 85)

Occlusion (n = 38)

7.9 ± 2.8 (3, 13)

3.9 ± 2.1 (1.3, 10.0)

57.5 ± 9.0 (40, 73)

P value

< 0.001

 < 0.001

0.005

PLA

   

Patent (n = 32)

32.5 ± 14.2 (16, 73)

2.0 ± 1.0 (0.3, 4.8)

67.0 ± 9.9 (44, 83)

Occlusion (n = 11)

14.2 ± 5.6 (7, 25)

2.9 ± 1.4 (1.3, 6.3)

67.4 ± 16.5 (42, 98)

P value

 < 0.001

0.021

0.925

  1. LIMA, left internal mammary artery; SVG, saphenous vein graft; LAD, left anterior descending artery; DIAG, diagonal artery; OM, obtuse marginal branch of circumflex artery; PDA, posterior descending artery; PLA, left posterior artery; MGF, mean graft flow; PI, pulsatile index; DF, diastolic filtration