Table 2.
Angiographic characteristics and treatment characteristics at first clinical in-stent restenosis presentation
| Parameter ISR characteristics | DM group (n=123) | Non-DM group (n=87) | P-value |
|---|---|---|---|
| ISR type | 0.866 | ||
| I. Focal | 78 (63.4%) | 56 (64.4%) | |
| Type 1B | 25 (20.3%) | 8 (9.2%) | 0.019 |
| Type 1C | 37 (30.1%) | 36 (41.4%) | 0.039 |
| Type 1D | 16 (13.0%) | 12 (13.8%) | 0.898 |
| II. Diffuse | 14 (11.4%) | 9 (10.3%) | |
| III. Proliferative | 7 (5.7%) | 3 (3.4%) | |
| IV. Complete | 24 (19.5%) | 19 (21.8%) | |
| ISR vessel | 0.583 | ||
| Left anterior descending | 70 (56.9%) | 42 (48.3%) | |
| Left circumflex artery | 25 (20.3%) | 24 (27.6%) | |
| Right coronary artery | 27 (22.0%) | 20 (23.0%) | |
| Left main | 1 (0.8%) | 1 (1.1%) | |
| Proximal ISR location | 70 (56.9%) | 43 (49.4%) | 0.284 |
| Disease burden | (n=109) | (n=82) | 0.195 |
| Single-vessel disease | 37 (33.9%) | 35 (42.7%) | 0.217 |
| Double-vessel disease | 37 (33.9%) | 30 (36.6%) | 0.705 |
| Triple-vessel disease | 35 (32.1%) | 17 (20.7%) | 0.080 |
| Treatment | (n=109) | (n=82) | 0.513 |
| Medical therapy | 20 (18.3%) | 17 (20.7%) | |
| CABG | 32 (29.4%) | 18 (22.0%) | |
| PCI | 57 (52.3%) | 47 (57.3%) | |
| Details of PCI | |||
| Procedural success | 56 (98.2%) | 45 (95.7%) | 0.588 |
| PCI type | 0.427 | ||
| POBA | 14 (24.6%) | 7 (14.9%) | |
| DCB | 5 (8.8%) | 6 (12.8%) | |
| New DES | 38 (66.7%) | 34 (72.3%) | |
| No. of stents | 1.06±0.24 | 1.23±0.43 | 0.051 |
| Stent length | 29.4±8.5 | 30.0±13.3 | 0.828 |
| Stent diameter | 3.00±0.39 | 3.08±0.41 | 0.412 |
| Adjunct devices | |||
| Rotablation | 1 (1.8%) | 1 (2.1%) | 1.000 |
| Cutting or NC balloon | 14 (24.6%) | 10 (21.3%) | 0.692 |
| IVUS guidance | 14 (24.6%) | 11 (23.4%) | 0.891 |
CABG - coronary artery bypass grafting; DCB - drug-coated balloon; DES - drug-eluting stent; IVUS - intravascular ultrasound; ISR - in-stent restenosis; NC - non-compliant; PCI - percutaneous coronary interventional; POBA - plain old balloon angioplasty