Skip to main content

Table 1 Systemic and biologic response to mechanical ventilation

From: Pressure support ventilation attenuates ventilator-induced protein modifications in the diaphragm

Biologic parameters

Control

CMV at 6 hours

CMV at 18 hours

PSV at 6 hours

PSV at 18 hours

pH

7.38 ± 0.02

7.42 ± 0.04

7.40 ± 0.05

7.39 ± 0.02

7.43 ± 0.01

PaO2/FiO2, mm Hg

360 ± 50

380 ± 40

350 ± 30

360 ± 40

370 ± 20

PaCO2, mm Hg

38 ± 3

40 ± 2

38 ± 3

40 ± 5

40 ± 3

MAP, mm Hg

90 ± 10

95 ± 15

97 ± 12

100 ± 10

95 ± 15

Na+, mmol/L

135 ± 2

138 ± 5

135 ± 3

140 ± 5

138 ± 4

K+, mmol/L

4.20 ± 0.1

4.0 ± 0.3

4.10 ± 0.2

3.90 ± 0.3

4.20 ± 0.2

  1. Fraction of inspired oxygen (FiO2) is 21%. CMV, controlled mechanical ventilation; MAP, mean arterial pressure; PaCO2, arterial partial pressure of carbon dioxide; ]PaO2, arterial partial pressure of oxygen; PSV, pressure support ventilation.