Optimal use of fielder XT guidewire enhances the success rate of chronic total occlusion percutaneous coronary intervention

Table 3 Lesion-related characteristics in the two groups, n (%)

	Overall population, n = 1230	XT group, n = 686	No-XT group, n = 544	P-value
Multivessel CAD	530 (43.1)	300 (43.7)	230 (42.3)	0.609
LC	170 (13.8)	90 (13.1)	80 (14.7)	0.423
Tortuosity	105 (10.2)	57 (11.7)	48 (8.8)	0.124
Bridging collaterals	95 (7.7)	55 (8.0)	40 (7.4)	0.665
Blunt stump	107 (8.7)	61 (8.9)	46 (8.5)	0.787
J-CTO score				0.077
0	597 (48.5)	332 (48.4)	265 (48.7)
1	507 (41.2)	282 (41.1)	225 (41.4)
2	99 (8.0)	50 (7.3)	49 (9.0)
3	23 (1.9)	19 (2.8)	4 (0.7)
4	4 (0.3)	3 (0.4)	1 (0.2)
Rentrop class				0.686
0	233 (18.9)	126 (18.4)	107 (19.7)
1	220 (17.9)	117 (17.1)	103 (18.9)
2	434 (35.3)	245 (35.7)	189 (34.7)
3	343 (27.9)	198 (28.9)	145 (26.7)
CTO vessel				0.570
LM	1 (0.1)	1 (0.1)	0 (0)
LAD	545 (44.3)	302 (44.0)	243 (44.7)
LCX	173 (14.1)	103 (15.0)	70 (12.9)
RCA	511 (41.5)	280 (40.8)	231 (42.5)
Occlusion length, mm	21.6 ± 14.8	21.5 ± 15.1	21.7 ± 14.5	0.876
Occlusion time, mo	82.3 ± 27.1	45.9 ± 60.0	45.0 ± 50.9	0.796

Values represent the mean ± SD or number of patients and proportion (%). CAD: Coronary artery disease; LC: Lesion calcification; J-CTO: Multicenter CTO Registry in Japan; rentrop class definition: Class 1, filling of side branches of the artery via collateral channels without visualization of the epicardial segment; Class 2, partial filling of the epicardial segment via collateral channels; Class 3, complete filling of the epicardial segment of the artery via collateral channels; CTO: Chronic total occlusion; LM: Left main artery; LAD: Left anterior descending artery; LCX: Left circumflex artery; RCA: Right coronary artery.