Research Article
Long-Term Clinical Outcomes of Unprotected Left Main Percutaneous Coronary Intervention: A Large Single-Centre Experience
Table 2
Baseline lesion and procedure characteristics.
| | N = 913 |
| Coronary artery disease extent | Isolated LM | 8.0% (73) | LM + 1VD | 19.9% (182) | LM + 2VD | 35.9% (328) | LM + 3VD | 36.1% (330) | Total occluded lesion | 4.4% (40) |
| LM lesion location | Ostium | 11.4% (104) | Shaft | 5.7% (52) | Bifurcation | 82.9% (757) |
| Main vessel | Reference vessel diameter, mm | 3.66 ± 0.46 | Lesion length, mm | 20.7 ± 15.3 | Diameter stenosis, % | 83.0 ± 10.7 |
| Side branch | Reference vessel diameter, mm | 2.96 ± 0.38 | Lesion length, mm | 20.3 ± 13.7 | Diameter stenosis, % | 79.8 ± 13.2 |
| Medina type for bifurcation lesion | 0,1,1 | 4.1% (37) | 1,0,0 | 3.8% (29) | 1,0,1 | 7.9% (60) | 1,1,0 | 46.8% (354) | 1,1,1 | 36.6% (277) |
| Lesion type | De novo | 96.4% (880) |
| SYNTAX score | 24.5 ± 7.4 | SYNTAX score ≤ 32 | 86.3% (788) | SYNTAX score > 32 | 13.7% (125) |
| Procedure access | Transradial approach | 45.7% (417) | Transfemoral approach | 54.3% (496) |
| Stent type | Bare metal stent | 12.0% (110) | Drug-eluting stent | 88.0% (803) | 1st generation drug-eluting stent | 15.0% (137) | 2nd generation drug-eluting stent | 72.9% (666) | Number of stents per patient | 2.15 ± 1.18 | Total stent length, mm | 32.1 ± 19.3 | 2-stent strategy | 26.5% (242) | Crush | 16.3% (149) | T-stent | 3.3% (30) | V or kissing stent | 5.4% (49) | Culotte | 1.5% (14) | Residual SYNTAX score | 4.86 ± 6.26 | Guidance with IVUS | 39.5% (361) | Performed by an experienced operator | 83.2% (760) |
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Experienced operator defined as those performed, at least, 15 LM PCIs per year for, at least, 3 consecutive years. |