Table 2.
Lesion Characteristics
| BMS (197 lesions) | DES
|
P value BMS vs. DES (SES + PES) | |||
|---|---|---|---|---|---|
| All (SES + PES) (209 lesions) | SES (103 lesions) | PES (106 lesions) | |||
| Stent duration, days | 721 (271, 1801) | 361 (172, 540) | 361 (180, 541) | 270 (149, 473) | <0.001 |
| Indication of stent implantation | |||||
| Stable angina pectoris | 150 (76) | 150 (72) | 72 (70) | 78 (74) | 0.316 |
| Unstable angina pectoris/AMI | 47 (24) | 59 (28) | 31 (30) | 28 (26) | |
| Lesion location | |||||
| Vessel: Left main coronary artery | 4 (2) | 6 (3) | 2 (2) | 4 (4) | 0.501 |
| Left anterior descending | 73 (37) | 87 (42) | 41 (40) | 46 (43) | |
| Left circumflex | 45 (23) | 51 (24) | 24 (23) | 27 (26) | |
| Right coronary artery | 75 (38) | 65 (31) | 36 (35) | 29 (27) | |
| Proximal lesion | 77/161 (48) | 102/202 (51) | 45/98 (46) | 57/104 (55) | 0.613 |
| Mid/Distal lesion | 84/161 (52) | 100/202 (49) | 53/98 (54) | 47/104 (45) | |
| Stent length, mm | 16.0 (12.0, 24.0) | 22.0 (15.5, 30.0) | 21.0 (15.0, 30.0) | 22.0 (15.8, 30.3) | <0.001 |
| Overlapping stents | 36 (18) | 63 (30) | 30 (29) | 33 (31) | 0.005 |
| Underlying plaque morphology | |||||
| Ruptured plaque/TCFA | 26 (13) | 49 (23) | 28 (27) | 21 (20) | 0.008 |
| Fibroatheroma | 86 (44) | 104 (50) | 44 (43) | 60 (57) | 0.261 |
| Fibrocalcific | 29 (15) | 16 (7) | 8 (8) | 8 (7) | 0.023 |
| Pathologic intimal thickening | 47 (24) | 20 (10) | 13 (12) | 7 (7) | <0.001 |
| Others* | 9 (4) | 20 (10) | 10 (10) | 10 (9) | 0.051 |
Values are expressed as medians (interquartile range) or n (%).
*
“Others” includes underlying restenotic lesion, calcified nodule, and dissection.
AMI = acute myocardial infarction, BMS = bare metal stents, DES = drug-eluting stents, PES = paclitaxel-eluting stents, SES = sirolimus-eluting stents, TCFA = thin-cap fibroatheroma