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Table 2 Gas exchange and hemodynamic variables

From: Regional lung aeration and ventilation during pressure support and biphasic positive airway pressure ventilation in experimental lung injury

  Baseline Injury PSV BIPAP+SBmean
Gas exchange     
PaO2/FIO2
(mmHg)
513 ± 62
(489.6-547.2)
119 ± 30*
(92.0-143.1)
264 ± 127
(136.0-378.7)
246 ± 112
(143.1-332.5)

(%)
5.5 ± 1.4
(4.4-6.5)
33.9 ± 12.8*
(24.7-39.7)
16.9 ± 10.4
(6.7-24.3)
19.8 ± 12.1
(11.6-28.7)
PaCO2
(mmHg)
34 ± 6
(29.4-39.7)
39 ± 8*
(30.1-46.5)
48 ± 6
(44.2-55.2)
59 ± 13
(46.9-66.2)
Hemodynamics     
CO
(L/min)
3.2 ± 0.8
(2.4-3.8)
3 ± 0.8
(2.3-3.8)
4.3 ± 1.4
(2.8-5.3)
4.2 ± 1.2
(3.2-5.2)
HR
(/min)
77 ± 13
(69-83)
75 ± 12
(65-86)
91 ± 18
(83-100)
91 ± 19
(77-110)
MAP
(mmHg)
73 ± 9
(67-79)
69 ± 12
(62-75)
75 ± 8
(71-77)
79 ± 14
(68-98)
MPAP
(mmHg)
22 ± 4
(20-24)
30 ± 5*
(27-32)
31 ± 5
(26-35)
33 ± 6
(30-36)
CVP
(mmHg)
10 ± 3
(8-12)
11 ± 2
(10-11)
9 ± 2
(8-10)
9 ± 2
(7-11)
PCWP
(mmHg)
13 ± 2
(12-14)
14 ± 2
(12-15)
13 ± 4
(11-14)
12 ± 2
(11-15)
  1. Values are given as mean ± standard deviation. Baseline, before induction of acute lung injury; injury, after induction of acute lung injury. * P < 0.05 vs. baseline; P < 0.05 vs. PSV.
  2. BIPAP+SBmean, biphasic positive airway pressure + spontaneous breathing; CO, cardiac output; CVP, central venous pressure; FiO2, fraction of inspired oxygen; HR, heart rate; MAP, mean arterial pressure; MPAP, mean pulmonary arterial pressure; PaCO2, partial pressure of arterial carbon dioxide; PaO2, partial pressure of arterial oxygen; PCWP, pulmonary artery occlusion pressure; PSV, pressure support ventilation; , mixed venous admixture.