Predictors and prevention of flow insufficiency due to limited flow demand

Table 3 Cut-off MLD and the incidence of LF and NF

Graft	Target	Location of stenosis	n	LF	NF	Cut-off MLD (mm)	MLD (mm)	n	LF	NF
in-situ ITA	LAD	Proximal	137	15 (11%)	4 (3%)	1.28	1.29~	35	7 (20%)	2 (6%)
						1.28	0.0 ~ 1.28	102	8 (8%)	2 (2%)
							p-value*		0.047	0.26
		Distal	100	18 (18%)	5 (5%)	0.77	0.78~	42	13 (31%)	4 (10%)
						0.77	0.0 ~ 0.77	58	5 (9%)	1 (2%)
		p-value (vs. proximal)		0.12	0.41		p-value*		0.004	0.002
in-situ ITA	LCX	Proximal	48	8 (17%)	3 (6%)	1.25	1.26~	19	7 (37%)	2 (11%)
						1.25	0.0 ~ 1.25	29	1 (3%)	1 (3%)
							p value*		0.002	0.32
		Distal	49	21 (43%)	3 (6%)	0.75	0.76~	26	16 (62%)	3 (12%)
						0.75	0.0 ~ 0.75	23	5 (22%)	0
		p-value (vs. proximal)		0.009	0.98		p-value*		0.005	0.09
SVG	LCX	Proximal	24	1 (4%)	0	-
		Distal	28	2 (7%)	3 (11%)	-
		p-value (vs. proximal)		0.65	0.10
in-situ GEA	RCA	Proximal	95	23 (24%)	13 (14%)	0.82	0.83~	22	8 (36%)	7 (32%)
						0.82	0.0 ~ 0.82	73	15 (21%)	6 (8%)
							p-value*		0.13	0.005
		Distal	14	10 (71%)	3 (21%)	-
		p-value (vs. proximal)		0.0003	0.44
SVG	RCA	Proximal	37	6 (16%)	2 (5%)	1.29	1.30~	11	4 (36%)	2 (18%)
						1.29	0.0 ~ 1.29	26	2 (8%)	0
							p-value*		0.03	0.02
		Distal	17	8 (47%)	3 (18%)	-
		p-value (vs. proximal)		0.02	0.15

FI: flow insufficiency, GEA: gastroepiploic artery, ITA: internal thoracic artery, LAD: left anterior descending artery, LCX: left circumflex artery, MLD: minimal luminal diameter, NF: not functional, RCA: right coronary artery, p-value*: larger vs. smaller than the cut-off value.

ISSN: 1749-8090