Table 2.
Angiographic and CT findings
| Total | U‐group | S‐group | ||
|---|---|---|---|---|
| n = 16 | n = 3 | n = 13 | P‐value | |
| CTO length (Angio), mm | 29.6 (20.0, 37.6) | 28.8 (23.6, 52.6) | 30.4 (18.7, 37.2) | 0.50 |
| CTO length (CT), mm | 30.7 (22.1, 38.9) | 29.9 (26.4, 56.8) | 31.4 (20.6, 38.1) | 0.47 |
| Calcification | 6 (37.5) | 1 (33.3) | 5 (38.5) | 1.0 |
| Tortuosity | 3 (18.8) | 2 (66.7) | 1 (7.7) | 0.10 |
| Rentrop > 2 | 14 (87.5) | 2 (66.7) | 12 (92.3) | 0.40 |
| Bridging collateral | 3 (18.8) | 1 (33.3) | 2 (15.4) | 0.50 |
| Abrupt stump | 4 (25.0) | 1 (33.3) | 3 (23.1) | 1.0 |
| No. of stents | 3 (2, 3) | 1 (0, 3) | 3 (2, 3) | 0.05 |
| Stent diameter, mm | 3.0 (2.5, 3.0) | 2.4 (2.3, 2.5) | 3.0 (2.5, 3.0) | 0.15 |
| Total stent length, mm | 89.5 (61.8, 106.5) | 32.0 (0, 109.0) | 91.0 (65.0, 104.0) | 0.11 |
| Retrograde approach | 8 (50.0) | 1 (33.3) | 7 (53.8) | 1.0 |
| Sheath size 7Fr/8Fr | 9 (56.3)/7 (43.8) | 2 (66.7)/1 (33.3) | 7 (53.9)/6 (46.2) | 1.0 |
| IVUS used | 16 (100.0) | 3 (100.0) | 13 (100.0) | 1.0 |
| Follow‐up period, days | 239 (208, 260) | 262 (259, 367) | 231 (203, 246) | 0.24 |
Note: Numbers show the median (first quartiles, third quartiles) or number of patients (%). Angio = coronary angiography; CT = computed tomography; CTO = chronic total occlusion; IVUS = intravascular ultrasound; PCI = percutaneous coronary intervention; S‐group = patients with successful PCI and no restenosis; U‐group = patients with unsuccessful PCI or with reocclusion during the follow‐up period.