Table 1. Baseline Patient and Operative Characteristics.
| All patients (n = 224) | |
|---|---|
| Age, mean (SD), y | 65.8 (8.3) |
| Sex | |
| Female | 46 (20.5) |
| Male | 178 (79.5) |
| Race, No./total No. (%)a | |
| Asian | 1/216 (0.5) |
| Black or African American | 14/216 (6.5) |
| Native Hawaiian or Other Pacific Islander | 1/216 (0.5) |
| White | 199/216 (92.1) |
| More than 1 race | 1/216 (0.5) |
| Ethnicity, No./total No. (%)b | |
| Hispanic or Latino | 20/220 (9.1) |
| Not Hispanic or Latino | 200/220 (90.9) |
| BMI, mean (SD)c | 30.2 (5.6) |
| Medical history | |
| Current smoker or ex-smoker | 123 (54.9) |
| Diabetes | 114 (50.9) |
| Hypertension | 191 (85.3) |
| Hyperlipidemia | 188 (83.9) |
| Peripheral arterial disease | 10 (4.5) |
| COPD | 16 (7.1) |
| Prior stroke in past year | 2 (0.9) |
| Prior myocardial infarction | 93 (41.5) |
| Prior PCI | 55 (24.6) |
| Cardiac measures and laboratory results | |
| NYHA class, No./total No. (%)a | |
| No heart failure | 34/215 (15.8) |
| Class I/II | 155/215 (72.1) |
| Class III/IV | 26/215 (12.1) |
| CCS class, No./total No. (%)b | |
| No angina | 64/221 (29.0) |
| Grade I/II | 75/221 (33.9) |
| Grade III/IV | 82/221 (37.1) |
| LVEF, median (IQR), % | 55.0 (50.0-60.0) |
| Creatinine, median (IQR), mg/dL | 1.0 (0.8-1.1) |
| Operative characteristics | |
| Surgery time, mean (SD), min | 268.5 (68.5) |
| Clamp time, mean (SD), min | 83.0 (25.8) |
| Bypass time, mean (SD), min | 110.5 (35.1) |
| SVG harvesting technique | |
| Direct | 41 (18.3) |
| Endoscopic | 169 (75.4) |
| Bridge | 14 (6.3) |
| Vein origin | |
| Above the knee | 36 (16.1) |
| Below the knee | 17 (7.6) |
| Both above and below the knee | 171 (76.3) |
| Vein preservation | |
| Saline/heparinized saline | 143 (63.8) |
| pH-buffered/heparinized pH-buffered | 56 (25.0) |
| Autologous blood | 4 (1.8) |
| >1 Method | 21 (9.4) |
| Vein varicosity, No./total No. (%) | |
| None | 154/223 (69.1) |
| Mild/moderate | 69/223 (30.9) |
| Grafts per patient | |
| 3 | 137 (61.2) |
| 4 | 72 (32.1) |
| 5 | 14 (6.3) |
| 7 | 1 (0.4) |
Abbreviations: BMI, body mass index; CCS, Canadian Cardiovascular Society; COPD, chronic obstructive pulmonary disease; LVEF, left ventricular ejection fraction; NYHA, New York Heart Association; PCI, percutaneous coronary intervention; SVG, saphenous vein grafts.
SI conversion factor: To convert creatinine from mg/dL to μmol/L, multiply by 88.4.
a
Race was self-reported by the patients.
b
Ethnicity was self-reported by the patients.
c
Calculated as weight in kilograms divided by height in meters squared.