Table 2. Baseline lesion and procedural characteristics.
| Characteristics | BES (n=1,049) | ZES (n=1,044) | p value | |
|---|---|---|---|---|
| Location | 0.99 | |||
| LM | 24 (2.3) | 25 (2.4) | ||
| LAD | 406 (38.7) | 403 (38.6) | ||
| LCX | 281 (26.8) | 283 (27.1) | ||
| RCA | 338 (32.2) | 333 (31.9) | ||
| ACC/AHA class B2/C | 735 (70.1) | 739 (70.8) | 0.75 | |
| In-stent restenosis | 5 (0.5) | 5 (0.5) | 0.99 | |
| Total occlusion | 87 (8.3) | 107 (10.2) | 0.14 | |
| Moderate to severe calcification | 130 (12.4) | 101 (9.7) | 0.056 | |
| Thrombus present | 49 (4.7) | 40 (3.8) | 0.39 | |
| Bifurcation lesion | 140 (13.3) | 158 (15.1) | 0.26 | |
| Ostial lesion | 36 (3.4) | 44 (4.2) | 0.41 | |
| Number of stents | ||||
| Per lesion | 1.2±0.4 | 1.2±0.4 | 0.095 | |
| Per patient | 2.7±0.9 | 2.6±0.9 | 0.31 | |
| Mean stent diameter | 3.0±0.4 | 3.0±0.4 | 0.96 | |
| Total stent length | ||||
| Per lesion | 29.0±15.1 | 28.9±15.0 | 0.88 | |
| Per patient | 64.5±26.8 | 64.8±28.5 | 0.89 | |
| Pre-procedure QCA | ||||
| Reference diameter (mm) | 3.0±0.4 | 2.9±0.4 | 0.93 | |
| MLD (mm) | 0.6±0.3 | 0.6±0.4 | 0.40 | |
| Diameter stenosis (%) | 80.9±9.8 | 80.3±10.3 | 0.21 | |
| Lesion length (mm) | 26.0±14.1 | 25.2±14.1 | 0.32 | |
| Post-procedure | ||||
| MLD (mm) | 2.7±0.4 | 2.7±0.4 | 0.83 | |
| Diameter stenosis (%) | 10.6±6.8 | 10.7±6.7 | 0.93 | |
Data are shown as the mean ± standard deviation for continuous variables and absolute numbers (percentage) for dichotomous variables. Number, length, and diameter of the stents were all calculated per lesion.
ACC = American College of Cardiology; AHA = American Heart Association; BES = biolimus A9-eluting stent; LAD = left anterior descending coronary artery; LCX = left circumflex coronary artery; LM = left main coronary artery; MLD = minimal luminal diameter; QCA = quantitative coronary angiography; RCA = right coronary artery; ZES = zotarolimus-eluting stent.