Patient demographics
| CAG guided group (n=54) | IVUS guided group (n=54) | p Value | |
|---|---|---|---|
| *Modified American Heart Association/American College of Cardiology classification. | |||
| †Calcium present in an arc >90°. | |||
| Continuous data are mean (SD). | |||
| CABG, coronary artery bypass grafting; CAG, coronary angiography; IVUS, intravascular ultrasound; LVEF, left ventricular ejection fraction; MI, myocardial infarction; PCI, percutaneous coronary intervention; QCA, quantitative coronary angiography. | |||
| Clinical data | |||
| Age (years) | 57 (33–78) | 57 (40–73) | NS |
| Prior CABG (%) | 4 | 7 | NS |
| Prior PCI (%) | 15 | 6 | NS |
| Prior MI (%) | 44 | 54 | NS |
| Diabetes (%) | 11 | 4 | NS |
| Current smoker (%) | 15 | 30 | NS |
| History of hypertension (%) | 24 | 20 | NS |
| Hypercholesterolaemia (%) | 93 | 96 | NS |
| Angiographic data | |||
| Number of diseased vessels | NS | ||
| 1 | 48 | 46 | |
| 2 | 43 | 41 | |
| 3 | 9 | 13 | |
| Lesion artery location (%) | NS | ||
| Left anterior descending | 46 | 48 | |
| Circumflex | 26 | 24 | |
| Right coronary | 28 | 28 | |
| Lesion classification (%)* | NS | ||
| A | 24 | 30 | |
| B1 | 30 | 24 | |
| B2 | 13 | 28 | |
| C | 33 | 19 | |
| Lesion length by QCA (mm) | 13.3 (9.2) | 13.4 (11.7) | NS |
| Size of reference vessel by QCA (mm) | 2.8 (0.5) | 2.8 (0.5) | NS |
| LVEF by ventriculography (%) | 69 (12) | 65 (12) | NS |
| IVUS data | |||
| Lesion length by IVUS (mm) | 24.2 (15.1) | 23.0 (15.6) | NS |
| Size of reference vessel by IVUS (mm) | 3.6 (0.4) | 3.6 (0.5) | NS |
| Calcified plaque (%)† | 25 | 25 | NS |