Table 2. Characteristics of CTO Lesions and Procedure Data.
| Lesion Characteristics | Total | Procedural Results | Guidewire Crossing Time | ||||
|---|---|---|---|---|---|---|---|
| Success | Fail | P | < 30 Minutes | > 30 Minutes | P | ||
| n = 94 | n = 37 | n = 80 | n = 51 | ||||
| J-CTO score | 2 (2–2) | 1.5 (1–2) | 2 (2–3) | 0.033 | 2 (1–2) | 2 (2–3) | 0.159 |
| Target vessel | 0.979 | 0.430 | |||||
| RCA | 61 (47) | 43 (33) | 18 (14) | 35 (27) | 26 (20) | ||
| LAD | 51 (39) | 37 (28) | 14 (11) | 30 (23) | 21 (16) | ||
| LCX | 17 (13) | 12 (9) | 5 (4) | 13 (10) | 4 (3) | ||
| Previous failed lesion | 14 (11) | 9 (7) | 5 (4) | 0.352 | 6 (5) | 8 (6) | 0.756 |
| Final crossing strategy | 131 (100) | 94 (72) | 37 (28) | 0.312 | 80 (61) | 51 (39) | 0.143 |
| Antegrade* | 116 (89) | 86 (66) | 30 (23) | 74 (56) | 42 (32) | ||
| Retrograde | 15 (11) | 8 (6) | 7 (5) | 6 (5) | 9 (7) | ||
| Hybrid approach | 39 (30) | 22 (17) | 17 (13) | 0.428 | 15 (11) | 24 (19) | 0.113 |
| Procedural time (minutes) | 18 (6–39) | 11.5 (4.75–26) | 43.5 (34–62) | 0.059 | 8 (4–15) | 44 (36–65) | 0.079 |
Data presented as median with interquartile range or number (%) of total 131 lesions (%). *Antegrade approach includes antegrade wire escalation and dissection re-entry. CTO = chronic total occlusion, LAD = left anterior descending branch, LCX = left circumflex branch, RCA = right coronary artery