Table 3.

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

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

GEA; gastroepiploic artery ITA; internal thoracic artery LAD; left anterior descending artery LCX; left circumflex artery

MLD; minimalluminal diameter RCA; right coronary artery *; comparison of higher versus lower than MLD