Demographic and clinical characteristics of patients
| Variables | All Patients (n = 780) | Non-CIS Group (n = 747) | CIS Group (n = 33) | P Value |
|---|---|---|---|---|
| Age, year (mean ± SD) | 57.38 ± 11.94 | 57.48 ± 0.44 | 57.38 ± 0.43 | .248 |
| Female sex, n (%) | 568 (72.8) | 539 (72.7) | 29 (85.3) | .047 |
| BMI index (kg/m2) | 24.33 ± 3.49 | 24.33 ± 0.13 | 24.26 ± 0.53 | .912 |
| GFR (mL/min/1.73 m2) (mean ± SD) | 95.22 ± 27.45 | 95.40 ± 1.02 | 91.29 ± 3.23 | .400 |
| Diagnosis, n (%) | <.001 | |||
| Aneurysm | 730 (93.6) | 709 (94.9) | 21 (63.6) | |
| AVF or AVM (including dural lesion) | 39 (5.0) | 27 (3.6) | 12 (36.4) | |
| Ischemia | 8 (1.0) | 8 (1.1) | 0 (0.0) | |
| Others | 3 (0.4) | 3 (0.4) | 0 (0.0) | |
| Volume of contrast administered (mL) (mean ± SD) | 154.87 ± 65.98 | 152.19 ± 2.30 | 215.45 ± 17.50 | <.001 |
| Contrast type, n (%) | .119 | |||
| Nonionic monomer | 763 (97.8) | 732 (98.0) | 31 (93.9) | |
| Iobitridol | 540 (69.2) | 514 (68.8) | 26 (78.8) | |
| Iohexol | 223 (28.6) | 218 (29.2) | 5 (15.1) | |
| Nonionic dimer (iodixanol) | 17 (2.2) | 15 (2.0) | 2 (6.1) | |
| Guiding catheter placement | .350 | |||
| Unilateral placement | 751 (96.3) | 720 (96.4) | 31 (93.9) | |
| Bilateral placement | 29 (3.7) | 27 (3.6) | 2 (6.1) | |
| Guiding catheter tip location, n (%) | <.001 | |||
| ECA group | 37 (4.7) | 27 (3.6) | 10 (30.3) | |
| ECA | 25 (3.2) | 18 (2.4) | 7 (21.2) | |
| CCA | 12 (1.5) | 9 (1.2) | 3 (9.1) | |
| Non-ECA group | 743 (95.3) | 720 (96.4) | 23 (69.7) |
Note:—CCA indicates common carotid artery; SD, standard deviation.