Table 2 |
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|
Ventilatory parameters and arterial blood gases |
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|
High VT Group |
Low VT Group |
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|
|
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|
Time |
Zero |
12 h |
Zero |
12 h |
|
VT (PBW) (ml) |
11.3 ± 0.8** |
11.9 ± 0.9* |
6.2 ± 0.6 |
6.2 ± 0.7 |
|
Peak Pressure (cmH2O) |
29.80 ± 8.74** |
29.6 ± 7.39** |
17.90 ± 2.80 |
17.60 ± 3.34 |
|
Plateau Pressure (cmH2O) |
28.90 ± 8.71** |
28.60 ± 7.32** |
17.10 ± 3.03 |
16.70 ± 3.26 |
|
PEEP (cmH2O) |
4.30 ± 0.48 |
4.30 ± 0.48 |
4.50 ± 0.52 |
4.50 ± 0.52 |
|
Ventilatory rate (bpm) |
18.6 ± 1.4 * |
18.7 ± 1.4* |
20.7 ± 2.5 |
21.3 ± 2.2 |
|
FIO2 (%) |
52.50 ± 25.41 |
48.50 ± 19.58 |
41.00 ± 2.10 |
41.00 ± 2.10 |
|
pH |
7.38 ± 0.04 |
7.41 ± 0.06 |
7.39 ± 0.05 |
7.40 ± 0.04 |
|
PaO2 (mmHg) |
143.60 ± 30.52 |
133.70 ± 32.92 |
146.00 ± 81.83 |
119.80 ± 28.76 |
|
PaCO2 (mmHg) |
34.40 ± 7.32 |
26.60 ± 5.60 |
30.29 ± 8.28 |
31.45 ± 7.18 |
|
HCO3 (mmol/L) |
20.80 ± 6.01 |
17.89 ± 5.56 |
19.71 ± 4.58 |
21.42 ± 5.56 |
|
SaO2 (%) |
98.00 ± 2.58 |
98.30 ± 2.16 |
97.60 ± 2.27 |
97.90 ± 2.18 |
|
PaO2/FIO2 |
307 ± 101 |
298 ± 105 |
358 ± 207 |
293 ± 74 |
|
|
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|
FIO2, inspiratory fraction of oxygen; HCO3, bicarbonate; PaCO2, partial pressure of carbon dioxide; PaO2, arterial oxygen tension; PBW, predicted body weight; PEEP, positive end expiratory pressure; SaO2, arterial oxygen saturation; VT, tidal volume; *P < 0.01, **P < 0.001 vs. Low VT group |
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|
Pinheiro de Oliveira et al. Critical Care 2010 14:R39 doi:10.1186/cc8919 |
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