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Table 2
Summary of descriptive findings.
| Variables | Mean ± standard deviation | Minimum | Percentile |
Maximum | ||
|---|---|---|---|---|---|---|
| 25 | 50 | 75 | ||||
| Age | 59.9 ± 12.4 years | 23 | 55 | 58 | 70 | 81 |
| Arterial flow | 5.16 ± 0.50 L/min | 3.7 | 4.9 | 5.1 | 5.4 | 6.2 |
| CPB time | 102.8 ± 40.5 min | 56 | 69 | 85 | 127 | 200 |
| Aortic clamping time | 80 ± 33 min | 42 | 59.2 | 69 | 91.25 | 171 |
| Initial hemoglobin level | 10.57 ± 2.49 mg/dL | 5.2 | 9.3 | 10.3 | 12.5 | 16.3 |
| Final hemoglobin level | 10 ± 4 mg/dL | 5.7 | 8.3 | 9.8 | 10.2 | 30.6 |
| Initial hematocrit level | 31.48 ± 8.5% | 19 | 28 | 32 | 37 | 48 |
| Final hematocrit level | 28.68 ± 4.7% | 17 | 25 | 30 | 31 | 38 |
| Plasma free hemoglobin before CPB | 0.02 ± 0.17 mg/dL | 0.01 | 0.01 | 0.02 | 0.02 | 0.09 |
| Plasma free hemoglobin after CPB | 0.08 ± 0.48 mg/dL | 0.02 | 0.037 | 0.075 | 0.10 | 0.21 |
| Plasma free hemoglobin 24 h after CPB | 0.03 ± 0.15 mg/dL | 0.01 | 0.02 | 0.02 | 0.04 | 0.07 |
Blood samples for analysis of hemoglobin, hematocrit and free plasma hemoglobin were collected before CPB, at the end of CPB and 24 h post-CPB.
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