Table 1.
Baseline Characteristics
| Characteristics | Overall (N = 3014) |
No m-SVG (N = 1969) |
m-SVGs (N = 1045) |
P |
|---|---|---|---|---|
| Age, median, y (25th, 75th percentiles) | 64 (56, 71) | 63 (56, 70) | 64 (56, 71) | 0.406* |
| Female sex, % | 20.9 | 22.8 | 17.3 | <0.001 |
| Race, nonwhite, % | 9.1 | 9.1 | 9.1 | 0.275 |
| Weight, median, kg (25th, 75th percentiles) | 88 (77, 100) | 87 (76, 100) | 89 (77, 101) | 0.046* |
| Height, median, cm (25th, 75th percentiles) | 175 (168, 180) | 174 (168, 180) | 175 (168, 180) | 0.011* |
| Medical history, % | ||||
| Hypertension | 75.1 | 74.4 | 76.5 | 0.203 |
| Diabetes mellitus | 37.8 | 36.9 | 39.4 | 0.177 |
| Current smoking | 22.9 | 23.0 | 22.7 | 0.166 |
| Hyperlipidemia | 76.3 | 75.5 | 77.9 | 0.134 |
| Chronic lung disease | 15.8 | 15.6 | 16.1 | 0.728 |
| Preoperative atrial fibrillation/flutter | 7.0 | 6.6 | 7.8 | 0.204 |
| MI, any | 42.2 | 42.2 | 42.4 | 0.899 |
| MI within 3 mo | 38.8 | 38.3 | 39.5 | 0.528 |
| Prior PCI | 0 | 0 | 0 | |
| Congestive heart failure | 9.7 | 9.5 | 10.0 | 0.721 |
| Prior stroke | 5.5 | 5.8 | 4.9 | 0.296 |
| PVD | 12.2 | 12.0 | 12.6 | 0.635 |
| Cerebrovascular disease | 12.7 | 12.7 | 12.6 | 0.959 |
| History of liver disease | 1.8 | 1.8 | 1.8 | 0.936 |
| Renal insufficiency | 2.2 | 2.1 | 2.2 | 0.903 |
| Cardiogenic shock | 0.8 | 0.8 | 0.9 | 0.770 |
| Cancer | 8.2 | 8.5 | 7.7 | 0.429 |
| Presenting features | ||||
| Heart rate, median, bpm (25th, 75th percentiles) | 70 (62, 80) | 70 (62, 80) | 71 (62, 80) | 0.222* |
| SBP, median, mm Hg (25th, 75th percentiles) | 134 (120, 149) | 133 (120, 149) | 134 (120, 150) | 0.276* |
| DBP, median, mm Hg (25th, 75th percentiles) | 75 (67, 82) | 76 (66, 82) | 74 (68, 82) | 0.029* |
| Peoperative NYHA class, % | 0.374 | |||
| I | 40.2 | 40.7 | 37.3 | |
| II | 33.4 | 33.3 | 33.8 | |
| III | 18.0 | 17.9 | 18.8 | |
| IV | 8.4 | 8.1 | 10.2 | |
| LVEF, median, % (25th, 75th percentiles) | 50 (40, 60) | 50 (42, 60) | 50 (40, 60) | 0.018* |
| No. of diseased vessels ≤2 or left main (>75% stenosis), % |
79.4 | 78.3 | 81.6 | 0.031 |
| Baseline creatinine, median, mg/dL (25th, 75th percentiles) |
1.0 (0.9, 1.2) | 1.0 (0.9, 1.2) | 1.0 (0.9, 1.2) | 0.049 |
| Creatinine clearance, median, mL/min (25th, 75th percentiles) |
89 (70, 112) | 88 (69, 112) | 89 (70, 112) | 0.724* |
*
Non-parametric test.
DBP indicates diastolic blood pressure; LVEF, left ventricular ejection fraction; MI, myocardial infarction; m-SVG, saphenous vein graft with >1 distal target; NYHA, New York Heart Association; PCI, percutaneous coronary intervention; PVD, peripheral vascular disease; and SBP, systolic blood pressure.