Table 2.
Patients with normal oxygen extraction ratio(≤40%) before transfusion (n=75).
| Variables | Pretransfusion | Posttransfusion | P |
|---|---|---|---|
|
| |||
| Heart rate (bpm) | 138.2 (2.2) | 134 (2.3) | .18 |
| Systolic blood pressure (mm Hg) | 85 (1.4) | 87.2 (1.4) | .26 |
| Mean blood pressure (mm Hg) | 65.2 (1.2) | 66.7 (1.2) | .37 |
| Diastolic blood pressure (mm Hg) | 48.37 (1.2) | 49.98 (1) | .3 |
| O2 arterial saturation (%) | 91.7 (0.9) | 92.5 (0.9) | .5 |
| Central venous pressure (mm Hg) | 9.6 (0.36) | 10 (0.37) | .44 |
| Urine output (mL/kg) |
4.3 (0.3) | 4.5 (0.2) | .58 |
| Core temperature oC | 36.4 (0.1) | 36.5 (0.1) | .48 |
| Hemoglobin (g/dL) |
9.3 (1.1)* | 12 (1.5)* | .0001 |
| SvcO2 (%) | 67.5 (1.4) | 67.5 (1.2) | 1 |
| Lactic acid (mmol/L) | 1.9 (0.2) | 1.6 (0.2) | .3 |
| SvcCO2 (%) | 5.6 (0.4) | 6.02 (0.4) | .45 |
| Vasoactive score | 7.5 (0.5) | 7.6 (0.5) | .88 |
| O2ER | 25.0 (9.6)* | 25.8 (9.8)* | .6 |
Central venous oxygen saturation (ScvO2); Oxygen extraction ratio (O2ER). P values from unpaired t test.
*
Standard deviation.