Table 1.
Patient characteristics
| Non-smokers n=20 | Smokers n=16 | ||
|---|---|---|---|
| Preoperative characteristics | |||
| Male/female | n | 19/1 | 13/3 |
| Age, years | Mean (range) | 67.6 (47–82) | 66.3 (37–80) |
| BMI, kg/m2 | Mean±SD | 28.4±3.2 | 26.6±4.8 |
| Medical and surgical history | |||
| Hypertension | n (%) | 15 (75) | 11 (52.4) |
| Hypercholesterolemia | n (%) | 15 (75) | 11 (52.4) |
| Myocardial infarct | n (%) | 7 (35) | 5 (23.8) |
| Previous PCI | n (%) | 5 (25) | 3 (14.3) |
| T2DM | n (%) | 8 (40) | 5 (23.8) |
| COPD | n (%) | 1 (5) | 3 (14.3) |
| LVEF | |||
| <40% | n (%) | 2 (10) | 1 (6.25) |
| 40–55% | n (%) | 8 (40) | 11 (68.8) |
| >55% | n (%) | 10 (50) | 4 (25.0) |
| SpO2, % | Mean±SD | 98.2±1.3 | 98.3±1.3 |
| Perioperative characteristics | |||
| CPB time, min | Mean±SD | 77.8±17.8 | 818±25.8 |
| Aortic cross-clamp time, min | Mean±SD | 46±13.3 | 46.9±15.3 |
| No. of grafts | Median (range) | 2 (1–2) | 2 (1–3) |
Abbreviations: BMI, body mass index; PCI, percutaneous coronary intervention; LVEF, left ventricular ejection fraction; SpO2, peripheral capillary oxygen saturation; CPB, cardiopulmonary bypass.