Table II.
Procedural and angiographic variables for 173 study lesions.
| Variables | Diffuse-type ISR (n=61) | Focal-type ISR (n=112) | P-value |
|---|---|---|---|
| Lesion characteristics | |||
| Target coronary vessel | 0.973 | ||
| Left anterior descending | 35 (57.4%) | 66 (58.9%) | |
| Left circumflex | 7 (11.5%) | 13 (11.6%) | |
| Right coronary | 19 (31.1%) | 33 (29.5%) | |
| Type B2/C lesions | 51 (83.6%) | 102 (91.0%) | 0.772 |
| Chronic total occlusion | 7 (11.5%) | 12 (10.7%) | 0.878 |
| Restenotic lesion | 6 (9.8%) | 13 (11.6%) | 0.722 |
| Ostial lesion | 2 (3.3%) | 10 (8.9%) | 0.162 |
| Bifurcation | 7 (11.5%) | 18 (16.1%) | 0.411 |
| Procedural characteristics | |||
| Balloon/artery ratio | 1.26±0.18 | 1.28±0.19 | 0.568 |
| Stent per lesion | 1.66±0.87 | 1.73±0.74 | 0.572 |
| Stent length per lesion, mm | 42.2±25.1 | 45.0±23.7 | 0.453 |
| Use of PES | 39 (63.9%) | 39 (34.8%) | <0.001 |
| Quantitative coronary angiography | |||
| Lesion length, mm | 35.9±19.7 | 38.4±20.8 | 0.429 |
| Reference vessel diameter, mm | 2.71±0.53 | 2.77±0.43 | 0.448 |
| Pre-intervention | |||
| Minimal luminal diameter, mm | 0.71±0.49 | 0.80±0.55 | 0.286 |
| Diameter stenosis, % | 72.3±17.4 | 70.5±19.6 | 0.544 |
| Post-intervention | |||
| Minimal luminal diameter, mm | 2.50±0.39 | 2.67±0.44 | 0.011 |
| Diameter stenosis, % | 4.63±16.0 | 2.8±14.8 | 0.350 |
| Postprocedural TIMI 3 flow | 58 (95.1%) | 111 (99.1%) | 0.126 |
| Acute gain | 1.76±0.50 | 1.88±0.60 | 0.202 |
| IVUS guidance | 36 (59.0%) | 81 (72.3%) | 0.074 |
Data are presented as mean ± SD or n (%). PES, paclitaxel-eluting stent; TIMI 3, thrombolysis in myocardial infarction grade 3; IVUS, intravascular ultrasound.