Table 1:
Patient demographics
| Variables | Mini-CPB (n = 160) | C-CPB (n = 159) | Statistics P [95% CI (Mini-CPB to C-CPB)] |
|---|---|---|---|
| Age (years) | 67.1 ± 10 | 66.3 ± 10 | NS (−1.40 to 3.00) |
| Height (cm) | 171.9 ± 8 | 172.1 ± 8 | NS (−1.96 to 1.56) |
| Weight (kg) | 84.1 ± 16 | 84.7 ± 14 | NS (−3.91 to 2.71) |
| Body surface area (m2) | 2.0 ± 0.2 | 2.0 ± 0.2 | NS (−0.04 to 0.04) |
| Logistic EuroSCORE | 4.4 ± 6.0 | 3.7 ± 5.0 | NS (−0.52 to 1.92) |
| ‘Urgent’ case (n) | 45 | 37 | NS (P = 0.37) |
| Ejection fraction (%) | 55.1 ± 10.5 | 60.7 ± 14.2 | P < 0.0005 (−8.35 to −2.85) |
| Diabetes (n) | 33 | 26 | NS (P = 0.39) |
| NYHA grade 3/4 (n) | 32 | 40 | NS (P = 0.29) |
| Hypertension (n) | 97 | 106 | NS (P = 0.30) |
| Preop Hb (g dl−1) | 14.0 ± 1.5 | 13.6 ± 1.3 | P < 0.011 (0.091 to 0.71) |
| Preop Cr (µmol l−1) | 95 ± 25 | 99 ± 43 | NS (−11.7 to 3.74) |
| CPB time (min) | 68 ± 20 | 68 ± 21 | NS (−4.52 to 4.52) |
| Aortic cross-clamp (min) | 42 ± 14 | 40 ± 14 | NS (−1.08 to 5.08) |
Differences in preoperative demographic variables, co-morbidities and bypass times between patients before either Mini-CPB or C-CPB. Each variable is shown as either mean ± SD, or absolute number.