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Table 5 Comparisons between VCV (test), PCV, and PSV in the mixed obstructive and restrictive lung model

From: Accuracy of the estimations of respiratory mechanics using an expiratory time constant in passive and active breathing conditions: a bench study

 

ΔP

PIF

PEF

Crs

RCexp

Rinsp

Rexp

(cmH2O)

(L/min)

(L/min)

(ml/cmH2O)

(ms)

(cmH2O/L·s)

(cmH2O/L·s)

VCV

17.44 ± 0.24

27.61 ± 0.11

45.61 ± 0.34

25.54 ± 0.38

496.51 ± 12.31

19.44 ± 0.25

22.94 ± 0.34

7.0 ml/kg

PCV

13.37 ± 0.04

23.74 ± 0.31

23.97 ± 0.15

24.22 ± 0.09

646.27 ± 8.22

33.76 ± 0.37

26.68 ± 0.32

5.0 ml/kg

PCV

18.46 ± 1.16

34.95 ± 0.36

32.89 ± 0.42

24.26 ± 0.20

653.59 ± 7.43

34.66 ± 0.53

26.94 ± 0.46

7.0 ml/kg

PCV

25.58 ± 2.21

43.77 ± 1.17

42.11 ± 1.20

23.92 ± 0.10

720.08 ± 6.41

35.05 ± 0.88

30.10 ± 0.31

10.0 ml/kg

PSV

10.24 ± 0.07

29.21 ± 0.06

24.44 ± 0.22

31.02 ± 0.22

585.39 ± 6.42

21.00 ± 0.16

18.87 ± 0.14

5.0 ml/kg

PSV

15.34 ± 1.09

39.69 ± 0.43

31.60 ± 0.47

26.83 ± 0.22

586.99 ± 5.37

23.16 ± 0.11

21.88 ± 0.30

7.0 ml/kg

PSV

23.34 ± 2.14

58.75 ± 1.31

46.06 ± 2.33

25.35 ± 0.16*

582.84 ± 6.38

23.81 ± 0.21

23.00 ± 0.29*

10.0 ml/kg

(P = 0.215)

(P = 0.732)

F

12318.047

4617.549

8138.969

1056.317

659.218

1737.310

1117.010

ANOVA p-value

 < 0.0001

 < 0.0001

 < 0.0001

 < 0.0001

 < 0.0001

 < 0.0001

 < 0.0001

  1. VTE expiratory tidal volume, N.S not significant, ΔP driving pressure, PIF peak inspiratory flow, PEF peak expiratory flow, Crs respiratory system compliance, RCexp expiratory time constant, Rinsp inspiratory airway resistance, Rexp expiratory airway resistance
  2. *P values (Student t test) are for comparisons between PSV, PCV, and VCV. Data are shown as means ± standard deviation and are the results of eight measurements/case
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European Journal of Medical Research

ISSN: 2047-783X

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