Table 2.
Procedural and angiographic characteristics.
| Initial attempt (n = 366) | Re-attempt (n = 253) | P | |
|---|---|---|---|
| Complication rate | 6.0% (22) | 4.0% (11) | 0.467 |
| Success rate | 86.9% (318) | 83.0% (210) | 0.204 |
| Calcification | 65.6% (240) | 77.5% (196) | 0.002 |
| Length of lesion [mm]* | 30 (10–100) | 30 (10–79) | 0.240 |
| In-stent CTO | 6.3% (23) | 18.2% (46) | < 0.001 |
| Blunt stump | 58.2% (213) | 70.0% (177) | 0.003 |
| Ostial CTO | 8.7% (32) | 14.2% (36) | 0.036 |
| J-CTO score > 3 | 18.6% (68) | 62.5% (158) | < 0.001 |
| Retrograde technique | 12.0% (44) | 32.4% (82) | < 0.001 |
| Stent type: | 0.686 | ||
| DES | 99.1% (457) | 98.6% (47) | |
| BMS | 0.9% (3) | 1.4% (3) | |
| Diameter of stent [mm]* | 3.0 (2.25–4.0) | 3.0 (2.5–4.0) | 0.332 |
| Lenght of stent [mm]* | 62 (12–157) | 64 (18–170) | 0.955 |
| Number of stents* | 2 (0–6) | 2 (0–6) | 0.490 |
| Amount of contrast medium [mL]* | 200 (70–750) | 200 (80–800) | 0.161 |
| Fluoroscopy time [min]* | 28 (4–113) | 37 (7–104) | < 0.001 |
| Examination time [min]* | 90 (11–208) | 120 (20–300) | < 0.001 |
*
Median (min–max),
BMS — bare metal stent; CTO — chronic total occlusion; DES — drug eluting stent; J-CTO — Japanese CTO