Skip to main content
Annals of Intensive Care

Table 4 Respiratory parameters during prone positioning session

From: Hemodynamic effects of extended prone position sessions in ARDS

Variables

T1

T3

T4

VT (mL kg−1 PBW)

6.2 ± 0.7

6.2 ± 0.8

6.1 ± 0.8

RR (min−1)

29 ± 5

29 ± 5

29 ± 5

I:E ratio (%)

42 ± 11

40 ± 9

39 ± 9

PEEP (cm H2O)

10 ± 3a,b

9 ± 3

9 ± 3

PEEPtot (cm H2O)

11 ± 2

10 ± 3

10 ± 3

Pplat (cm H2O)

23 ± 4

22 ± 5c

22 ± 4c

Δp (cm H2O)

12 ± 4

11 ± 4

11 ± 3

pH

7.35 ± 0.10

7.38 ± 0.09a,c

7.37 ± 0.09c

PaCO2 (mmHg)

45 ± 10

43 ± 11

44 ± 10

PaO2/FiO2

112 ± 28

179 ± 62a,c

153 ± 60c

Lactate (mmol L−1)

3.6 ± 3.2

3.3 ± 3.0

3.2 ± 3.0

Hemoglobin (g L−1)

101 ± 22

98 ± 21c

98 ± 20c

  1. Values are mean ± standard deviation
  2. Δp, driving pressure; FiO2, inspired oxygen fraction; I:E ratio, inspiratory-to-expiratory time ratio; PaCO2, partial pressure of arterial carbon dioxide; PaO2, partial pressure of arterial oxygen; PBW, predicted body weight; PEEP, external PEEP; PEEPtot, total PEEP of the respiratory system; Pplat, plateau pressure of the respiratory system; RR, respiratory rate; T1, before prone position, T3, end of prone position session; T4, after prone position session; VT, tidal volume
  3. ap < 0.05 versus T4; b p < 0.05 versus T3; c p < 0.05 versus T1
Back to article page