Table 2. Upper vascular anomalies in the two study groups and in successful and failed procedures.

	SG (n=114)	CG (n=1,482)	p-value	Procedural success (n=1,384)	Procedural failure (n=212)	p-value
A group	97 (85%)	1,171 (79%)	0.1	1,098 (97%)	170 (80%)	0.8
Radial stenosis or atherosclerosis	5 (4%)	60 (4%)	0.8	52 (4%)	13 (6%)	0.1
Radial occlusion	2 (2%)	10 (0.6%)	0.2	8 (0.5%)	4 (2%)	0.06
Remnant radial artery	53 (46%)	458 (31%)	0.001	445 (32%)	66 (31%)	0.8
Radial tortuosity >45 degree	31 (27%)	584 (39%)	0.009	545 (39%)	70 (33%)	0.08
Radial loop 360°	15 (12%)	173 (12%)	0.6	129 (9%)	59 (28%)	0.0001
Brachial loop	2 (2%)	34 (2%)	1	30 (2%)	6 (3%)	0.4
Brachial tortuosity	10 (9%)	139 (9%)	1	139 (10%)	10 (5%)	0.01
B group	21 (18%)	362 (24%)	0.1	325 (23%)	58 (27%)	0.2
Axillary or subclavian tortuosity	18 (16%)	282 (19%)	0.4	260 (19%)	40 (19%)	1
Axillary or subclavian stenosis or occlusion	5 (4%)	91 (6%)	0.5	73 (5%)	23 (11%)	0.003
C group	1 (0.8%)	44 (3%)	0.3	39 (3%)	6 (3%)	1
Lusoria	1 (0.8%)	36 (2%)	0.5	34 (2%)	3 (1%)	0.4
Aortic elongation	0	8 (0.5%)	1	5 (0.3%)	3 (1%)	0.07