Table 2.

Angina class and lesion characteristics of patients who underwent CTO PCI.

Variable	Failed CTO-PCI (n = 48)		Successful CTO-PCI (n = 252)		p-value
	N	%	N	%
CCS score					0.87
No angina	18	37.5	86	34.3
1	2	4.2	22	8.8
2	8	16.7	43	17.1
3	9	18.8	44	17.5
4	11	22.9	56	22.3
No. of diseased vessels					0.018*
Single-vessel	9	18.8	48	19.1
Two-vessel	10	20.8	83	32.9
Three-vessel	18	37.5	103	40.9
Single-vessel and left main	1	2.1	2	0.8
Two-vessel and left main	0	0.0	1	0.4
Three-vessel and left main	10	20.8	15	6.0
Antegrade wiring	43	89.6	225	89.3	0.95
Rotablation	2	4.2	14	5.6	0.68
Mean no. of implanted stents (±SD)	0.8	±1.7	3.7	±2.2	<0.001*
Access site					ns
Right radial artery	8	17.8	37	14.9
Left radial artery	2	4.4	21	8.5
Right femoral artery	30	66.7	168	67.7
Left femoral artery	2	4.4	5	2.0
Left brachial artery	0	0.0	4	1.6
Right femoral vein	2	4.4	12	4.8
Left femoral vein	1	2.2	1	0.4

SD, standard deviation. *p < 0.05.