|
Comparison of cardiorespiratory variables before and after induction of lung injury |
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| CMV (n = 8) |
AV-ECMO (n = 9) |
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|
|
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| Variables |
Pre-injury |
Post-injury |
Pre-injury |
Post-injury |
|
|
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| Minute volume (ml/kg/min) |
408 ± 79 |
640 ± 144* |
382 ± 109 |
561 ± 187* |
| PaO2 (mmHg) |
389 ± 128 |
113 ± 85*** |
393 ± 131 |
179 ± 86*** |
| PaCO2 (mmHg) |
37.1 ± 5.1 |
40.9 ± 3.1 |
36.7 ± 1.9 |
35.1 ± 3† |
| Arterial pH |
7.311 ± 0.05 |
7.263 ± 0.04 |
7.349 ± 0.05 |
7.344 ± 0.03†† |
| HCO3- (mmol/l) |
17.7 ± 3.2 |
17.4 ± 1.7 |
19.5 ± 2.8 |
18.3 ± 2.1 |
| Arterial Hb-O2 (%) |
99.8 ± 0.3 |
89.6 ± 11 |
99.8 ± 0.3 |
95.1 ± 11 |
| O2-extraction (%) |
28.0 ± 5.7 |
35.9 ± 4.9* |
24.7 ± 8.1 |
35.7 ± 9.3* |
| Hb (g/dl) |
9.4 ± 1.5 |
10.3 ± 2.0 |
8.1 ± 2.0 |
8.7 ± 2.3 |
| MAP (mmHg) |
84.2 ± 12.1 |
88.0 ± 10.9 |
96.7 ± 9.0 |
92.0 ± 14 |
| PAP (mmHg) |
13.1 ± 4.1 |
20.1 ± 5.7 |
14.5 ± 5.4 |
21.5 ± 4.9* |
| CO (ml/kg per min) |
185 ± 23 |
164 ± 53 |
181 ± 69 |
173 ± 56 |
| VO2 (ml/kg per min) |
5.7 ± 2.2 |
8.7 ± 2.7* |
5.4 ± 1.5 |
7.8 ± 2.5* |
| Body weight (kg) |
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| All lambs |
6.3 ± 1.7 |
- |
8.5 ± 2.8 |
- |
| Surviving lambs |
- |
6.5 ± 1.3 |
- |
11.0 ± 2.2† |
| Range |
3.6–9.2 |
- |
5.0–12.7 |
- |
|
Comparison of cardiorespiratory variables before and after induction of lung injury in surviving and nonsurviving lambs subjected to conventional mechanical ventilation (CMV) or arteriovenous (AV)-extracorporeal membrane oxygenation (ECMO) therapy. Values are expressed as mean ± standard deviation. *P < 0.05, **P < 0.01, ***P < 0.001, pre-injury baseline versus post-injury baseline in the same group. †P < 0.05, ††P < 0.01, pre-injury or post-injury baselines: CMV versus AV-ECMO. CO, cardiac output; Hb-O2, hemoglobin–oxygen saturation; MAP, mean arterial pressure; PaCO2, arterial carbon dioxide tension; PaO2, arterial oxygen tension; PAP, pulmonary artery pressure; VO2, oxygen consumption. | ||||
Totapally et al. Critical Care 2004 8:R495 doi:10.1186/cc2983 |
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