Table 2. Angiographic and procedural characteristics in patients with renal insufficiency.
| Characteristic | Group A (n = 1,829) | Group B (n = 142) | Group C (n = 359) | P*-value | Pâ-value |
|---|---|---|---|---|---|
| Multivessel coronary disease, n (%) | 1,070 (58.5%) | 131 (92.3%) | 310 (86.4%) | 0.067 | <0.001 |
| Multiple CTO, ≥2 | 31 (21.8%) | 69 (19.2%) | 0.510 | ||
| CTO vessel | |||||
| RCA | 63 (44.4%) | 186 (51.8%) | 0.133 | ||
| LAD | 59 (41.5%) | 164 (45.7%) | 0.402 | ||
| LCX | 54 (38.0%) | 80 (22.3%) | <0.001 | ||
| LM | 2 (1.4%) | 3 (0.8%) | 0.561 | ||
| No. of stents used, n | 1.52 ± 1.24 | 1.35 ± 1.35 | 2.25 ± 1.29 | <0.001 | <0.001 |
| Total stent length, mm | 36.57 ± 32.30 | 32.88 ± 34.48 | 58.94 ± 36.97 | <0.001 | <0.001 |
| Procedural duration, min | 63.09 ± 41.55 | 74.64 ± 45.49 | 103.25 ± 51.24 | <0.001 | <0.001 |
| Contrast volume, mL | 119.54 ± 67.42 | 126.76 ± 71.84 | 169.29 ± 66.39 | <0.001 | <0.001 |
| <100 | 645 (35.4%) | 47 (33.1%) | 22 (6.1%) | ||
| 100–200 | 905 (49.7%) | 69 (48.6%) | 208 (57.9%) | ||
| >200 | 271 (14.9%) | 26(18.3%) | 129 (35.9%) | ||
| Hydration volume, mL | 776.17 ± 431.26 | 809.96 ± 447.75 | 816.08 ± 451.64 | 0.891 | 0.084 |
| <960 mL, n (%) | 1,219 (68.1%) | 87 (61.7%) | 228 (64.0%) | 0.625 | 0.049 |
| V/CrCl > 2.62, n (%) | 521 (29.1%) | 45 (31.7%) | 176 (49.9%) | <0.001 | <0.001 |
Group A = without chronic total occlusion (CTO); Group B = un-attempted CTO-PCI; Group C = attempted CTO-PCI; PCI = percutaneous coronary intervention; CKD = chronic kidney disease; CTO = chronic total occlusion; RCA = right coronary artery; LAD = left anterior descending; LCX = left circumflex coronary artery; LM = left main coronary artery;
V/CrCl = ratio of contrast volume to creatinine clearance; P*, group B vs, group C;
Pâ, group A vs. group B + group C.