| |
PS15
|
PS5
|
PS0
|
P
|
|---|
|
Tidal volume, ml
|
836 ± 250
|
496 ± 210
|
456 ± 182
|
<0.001
|
|
Respiratory rate, min−1
|
10.7 ± 4.3
|
16.0 ± 6.8
|
16.7 ± 7.6
|
0.003
|
|
Minute ventilation, l/min
|
8.2 ± 2.1
|
7.4 ± 2.5
|
6.8 ± 2.1
|
0.119
|
|
Mean airway pressure, cmH2
O
|
11.8 ± 2.9
|
8.7 ± 2.0
|
7.6 ± 1.9
|
<0.001
|
|
Mean arterial pressure, mmHg
|
77.9 ± 8.8
|
78.8 ± 10.6
|
80.2 ± 11.4
|
0.751
|
|
Heart rate, min−1
|
63.9 ± 19.1
|
65.7 ± 19.4
|
66.5 ± 21.0
|
0.899
|
|
pH
|
7.39 ± 0.05
|
7.37 ± 0.04
|
7.36 ± 0.04
|
0.090
|
|
PaO2
, mmHg
|
176.7 ± 48.3
|
179.3 ± 50.0
|
175.2 ± 61.9
|
0.967
|
|
PaCO2
, mmHg
|
42.2 ± 5.3
|
43.8 ± 4.4
|
45.1 ± 5.1
|
0.147
|
|
Base excess, mmol/L
|
1.0 ± 2.9
|
0.7 ± 2.9
|
0.6 ± 3.0
|
0.899
|
- Results are expressed as mean ± SD. PS, pressure support; PaO2, partial pressure of oxygen in arterial blood; PaCO2, partial pressure of carbon dioxide in arterial blood.
