Patient and lesion characteristics
| Number | |
|---|---|
| Study patients | 41 |
| Age (years) (mean (SD)) | 59 (10) |
| Male (%) | 36 (88) |
| Previous myocardial infarction (%) | 20 (49) |
| Previous balloon angioplasty (%) | 5 (12) |
| Braunwald II-III unstable angina (%) | 6 (15) |
| Single vessel disease (%) | 9 (22) |
| Multivessel disease (%) | 32 (78) |
| Left ventricular ejection fraction (mean (SD)) | 61 (10) |
| Lesions attempted | 64 |
| Lesions/patient (mean (SD)) | 1.6 (0.3) |
| Vessel treated | |
| Left anterior descending/diagonal (%) | 32 (50) |
| Left circumflex/marginal (%) | 17 (26) |
| Right coronary (%) | 14 (22) |
| Venous graft (%) | 1 (2) |
| Lesion location | |
| Ostial (%) | 6 (9) |
| Proximal (%) | 21 (33) |
| Mid-segment (%) | 28 (44) |
| Distal (%) | 9 (14) |
| Modified AHA/ACC lesion type | |
| A (%) | 4 (6) |
| B1 (%) | 14 (22) |
| B2 (%) | 30 (47) |
| C (%) | 16 (25) |
| Tortuous proximal vessel (%) | 15 (23) |
| Lesion length (mm) | |
| < 5 (%) | 1 (2) |
| 5–9.9 (%) | 25 (39) |
| 10–14.9 (%) | 18 (28) |
| 15–19.9 (%) | 11 (17) |
| ⩾ 20 (%) | 9 (14) |
| Reference lumen diameter (mm) | |
| < 2.5 (%) | 17 (27) |
| 2.5–2.99 (%) | 22 (34) |
| 3.0–3.49 (%) | 15 (23) |
| ⩾ 3.5 (%) | 10 (16) |
AHA/ACC, American Heart Association/American College of Cardiology.