Table 2.
Group | UVC | NTNI | NT | LT | HT | |
---|---|---|---|---|---|---|
pH | --- | 7.27±0.05 | 7.20±0.14 | 7.22±0.1 | 6.98±0.22+ | |
PaCO2 | (mmHg) | --- | 58±7 | 75±34 | 58±11 | 113±44+ |
PIP | (cmH2O) | --- | 26±6.9 | 34±7.5 | 28±5.8 | 38±3.2+ |
VT/kg | (mL/kg) | --- | 7.2±1.6 | 7.8±1.9 | 6.0±1.4 | 7.1±1.8 |
Pulse Rate | (bpm) | --- | 167±15 | 174±29 | 118±21+ | 209±44+ |
Lung Injury and Inflammatory Responses | ||||||
Pneumothorax | N | --- | 0 | 2 | 0 | 6 |
Death < 3 h | N | --- | 0 | 0 | 0 | 5 |
PIE at autopsy | N | 0 | 1 | 5 | 2 | 7 |
ALI score | (0-6) | 0.6±0.4 | 1.6±1.3 | 4.2±0.3*+ | 1.4±0.9 | 3.2±0.7* |
Inflammatory Cells in BAL | ×105/kg | 1.9±4 | 147±130* | 247±157* | 115±46* | 146±60* |
Protein in BAL | mg/kg | 25±12 | 60±31* | 107±24*+ | 94±21*+ | 86±20* |
UVC= unventilated control group, NTNI= normothermic positive control group, NT= normothermic injury group, LT= hypothermic injury group, HT= hyperthermic injury group. bpm= beats per minute, PIE= pulmonary interstitial emphysema, ALI= acute lung injury, BAL= bronchoalveolar lavage fluid. (N) represents the number of affected animals per group. Data presented as mean ± SD.
p < 0.05 vs. UVC
p < 0.05 vs. NTNI.