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Table 3 Flow insufficiency according to MLD higher and lower than cut-off value and stenosis location

From: Intraoperative transit-time flowmetry in patients undergoing coronary surgery to determine relationships between graft flow and patency and prior coronary interventions and flow demand: a retrospective study

Bypass graft

Stenosis location

Reference diameter (mm)

MLD < cutt-off value

Cut-off value (mm)

calculated % stenosis

MLD > cut-off value

in-situ ITA

Proximal

3.07 ± 0.75

8/159

1.29

58%

7/42

   

(5.0%)

*p = 0.01

(16.7%)

 

Distal

2.42 ± 0.53

10/100

0.95

61%

10/33

   

(10.0%)

*p = 0.005

(30.3%)

in-situ ITA

Proximal

3.21 ± 0.84

1/46

1.26

61%

7/21

   

(2.2%)

*p = 0.0003

(33.3%)

 

Distal

2.40 ± 0.53

7/35

0.80

67%

16/27

   

(20.0%)

*p = 0.0005

(59.3%)

in-situ GEA

Proximal

3.00 ± 0.73

22/110

1.27

58%

5/10

   

(20.0%)

*p = 0.03

(50.0%)

 

Distal

2.79 ± 0.77

 

N/A

  
  1. GEA; gastroepiploic artery ITA; internal thoracic artery LAD; left anterior descending artery LCX; left circumflex artery
  2. MLD; minimalluminal diameter RCA; right coronary artery *; comparison of higher versus lower than MLD