Table 1 Cardiorespiratory parameters of 19 patients at PEEPs of 15 cmH₂O and 0

PaO₂ (mmHg)

213 ± 83

147 ± 80

<0.0001

Qs/Qt (%)

30 ± 6

39 ± 9

<0.0001

PaCO₂ (mmHg)

43 ± 8

46 ± 8

0.006

VD_A/VT (%)

29 ± 11

33 ± 12

NS

Crs (ml cmH₂O^-1)

56 ± 26

48 ± 14

NS

Slope (ml cmH₂O^-1)

53 ± 21

69 ± 26

0.003

PEEPi (cmH₂O)

2.2 ± 1.1

0.8 ± 1.1

0.001

MAP (mmHg)

84 ± 13

92 ± 15

0.006

SVRI (dyn s^-1 cm^-5 m²)

1,767 ± 748

1,916 ± 1,114

NS

MPAP (mmHg)

28 ± 8

25 ± 9

NS

PVRI (dyn s^-1 cm^-5 m²)

345 ± 164

289 ± 174

NS

PCWP (mmHg)

14 ± 3

11 ± 4

0.02

CI (l minute^-1 m^-2)

3.7 ± 1.8

4.3 ± 1.8

0.03