Distribution of demographic and clinicopathological characteristics of the two groups of patients
| Group A (n = 53) | Group B (n = 50) | p value | |
|---|---|---|---|
| Age (years) | 59.8 (10.8) | 63 (8.8) | 0.10 |
| Sex | |||
| Male | 43 | 39 | 0.69 |
| Female | 10 | 11 | |
| Angina-free interval after 1st CABG (months) | 57.3 (18) | 61.4 (24) | 0.37 |
| Time from 1st to 2nd operation (months) | 61.2 (23.4) | 65.4 (32) | 0.17 |
| Left ventricular function | |||
| Good | 30 (57) | 20 (40) | 0.09 |
| Fair | 16 (30) | 19 (38) | 0.40 |
| Poor | 7 (13) | 11 (22) | 0.49 |
| Left main disease | 7 (13) | 6 (12) | 0.34 |
| Triple vessel disease | 34 (64) | 30 (60) | 0.66 |
| Urgent surgery | 8 (15) | 10 (20) | 0.51 |
| No of grafts at 1st operation | 3.1 (1) | 3.2 (1.2) | 0.56 |
| No of grafts at 2nd operation | 2.8 (0.9) | 3 (1.1) | 0.34 |
| Angiographic data | |||
| Graft blockage | 18 (33) | 11 (22) | 0.61 |
| Atherosclerotic vein graft disease | 20 (37) | 23 (46) | 0.39 |
| Progression/new disease | 15 (28) | 15 (30) | 0.85 |
| Incomplete revascularisation | 1 (2) | 1 (2) | 0.73 |
Group A, IMA grafts (with or without SV grafts); group B, SV grafts only. Values are expressed as mean (SD), and number of patients (%). There were no significant differences between the groups.