Table 2.
Metabolic and respiratory variables of the experimental groups.
| Variable | Group | Measuring point 1 (0.5 h) |
Measuring point 2 (2.5 h) |
Measuring point 3 (3.0 h) |
Measuring point 4 (3.5 h) |
|---|---|---|---|---|---|
| SaO2
[%] |
NT | 99 ± 1 | 99 ± 1 | 99 ± 1 | 99 ± 1 |
| HT | 99 ± 1 | 99 ± 1∗# | 99 ± 1* | 99 ± 1∗# | |
| NT/HS | 99 ± 1 | 99 ± 1 | 98 ± 1* | 98 ± 1* | |
| HT/HS | 99 ± 1 | 99 ± 1∗# | 98 ± 1# | 98 ± 1∗# | |
|
| |||||
| pCO2
[mmHg] |
NT | 39 ± 1 | 39 ± 1 | 40 ± 1 | 39 ± 1 |
| HT | 40 ± 1 | 41 ± 1* | 40 ± 1 | 41 ± 1∗# | |
| NT/HS | 40 ± 1 | 42 ± 1 | 45 ± 1* | 44 ± 1* | |
| HT/HS | 39 ± 1 | 40 ± 1* | 44 ± 1* | 43 ± 1* | |
|
| |||||
| pO2
[mmHg] |
NT | 160 ± 4 | 164 ± 1 | 161 ± 2 | 164 ± 2 |
| HT | 157 ± 1 | 159 ± 2# | 156 ± 3 | 160 ± 3 | |
| NT/HS | 155 ± 2 | 158 ± 2 | 147 ± 3* | 151 ± 2 | |
| HT/HS | 158 ± 3 | 163 ± 3 | 148 ± 2* | 149 ± 3* | |
|
| |||||
| PH | NT | 7,42 ± 0,01 | 7,40 ± 0,01* | 7,39 ± 0,01* | 7,39 ± 0,01* |
| HT | 7,41 ± 0,01 | 7,39 ± 0,01* | 7,39 ± 0,01 | 7,38 ± 0,01* | |
| NT/HS | 7,39 ± 0,01 | 7,38 ± 0,01 | 7,33 ± 0,01* | 7,34 ± 0,01* | |
| HT/HS | 7,41 ± 0,01 | 7,38 ± 0,01* | 7,33 ± 0,01* | 7,33 ± 0,01* | |
|
| |||||
| Hb [g·100 mL−1] |
NT | 12 ± 1 | 12 ± 1 | 12 ± 1 | 12 ± 1 |
| HT | 13 ± 1 | 13 ± 1# | 13 ± 1* | 13 ± 1# | |
| NT/HS | 12 ± 1 | 12 ± 1 | 12 ± 1 | 12 ± 1 | |
| HT/HS | 12 ± 1 | 13 ± 1 | 12 ± 1 | 12 ± 1 | |
|
| |||||
| Lactate [mmol·L−1] |
NT | 0,6 ± 0,1 | 0,9 ± 0,1 | 1,0 ± 0,1 | 0,9 ± 0,1* |
| HT | 1,3 ± 0,2# | 1,1 ± 0,2∗# | 1,1 ± 0,2∗# | 1,1 ± 0,2∗# | |
| NT/HS | 0,9 ± 0,3 | 1,2 ± 0,2 | 1,3 ± 0,2 | 1,2 ± 0,2 | |
| HT/HS | 0,8 ± 0,1 | 0,7 ± 0,1 | 0,7 ± 0,1# | 0,7 ± 0,1# | |
Effect of normothermia (NT), hypothermia (HT), hemorrhage during normothermia (NT/HS), and hemorrhage during hypothermia (HT/HS) on systemic oxygen saturation (SAT), carbon dioxide partial pressure (pCO2), oxygen partial pressure (pO2), pH, hemoglobin (Hb), and lactate; data are presented as absolute values, mean ± SE, n = 5, *P < 0.05 versus baseline, # P < 0.05 versus NT for group HT and versus NT/HV for group HT/HV.