Periprocedural and clinical outcomes of percutaneous coronary intervention of chronic total occlusions in patients with low- and mid-range ejection fractions

The Egyptian Heart Journal

Table 3 Angiographic characteristics and procedural data in the 3 groups

Variable	G (N) (nom. = 25)	G (M) (nom. = 25)	G (L) (nom. = 25)	p value
Procedure time (min)
Mean ± SD	79.12 ± 30.24	80.36 ± 27.54	80.28 ± 25.32	0.985
Range	35-150	36-145	40-130	0.985
Contrast volume (ml)
Mean ± SD	357.3 ± 215.2	339.8 ± 198.4	276.4 ± 139.4	0.04*
Range	142-573	141-538	137-415	0.04*
Syntax score
Mean ± SD	21.64 ± 3.90	22.72 ± 3.35	22.84 ± 2.56	0.376
Range	15-30	17-29	19-29	0.376
J-CTO score (N. (%))
≥ 3	12 (48%)	13 (52%)	15 (60%)	0.687
< 3	13 (52%)	12 (48%)	10 (40%)	0.687
Wire technique
Antegrade	20 (80%)	19 (76%	18 (72%)	0.803
Retrograde	5 (20%)	6 (24%)	7 (28%)	0.803
Wire stiffness
< 3 g	17 (68%)	15 (60%)	16 (64%)	0.841
> 3 g	8 (32%)	10 (40%)	9 (36%)	0.841

Data are expressed as mean ± SD or number (%)
G (N): normal LVEF group, G (M): mid-range LVEF group, G (L): low LVEF group, *:significant