Table 3

Respiratory mechanics parameters


Pre-recruitment maneuver
Post-recruitment maneuver
P-value
fractional change(%)

PIP (cmH2O)
36.6 ± 4
31.1 ± 3.7
0.012
-12.5 ± 6
PPLAT (cmH2O)
30.7 ± 3.1
27.2 ± 2.8
0.028
-13.8 ± 7
CRS (ml cmH2O-1)
13.5 ± 2.2
17.9 ± 2.6
0.028
34.5 ± 17
Pmci,INF (cmH2O)
22.4 ± 11.9
32.3 ± 5.4
0.046
113 ± 192
Pmcd,INF (cmH2O)
43.3 ± 9.5
56.6 ± 15.5
0.075
-
CINF (ml cmH2O-1)
24.4 ± 14.7
42.0 ± 14.5
0.028
101.8 ± 92
Pmci,DEF (cmH2O)
9.4 ± 2.2
9.9 ± 1.1
0.463
-
Pmcd,DEF (cmH2O)
19.9 ± 2.0
21.4 ± 1.9
0.046
7.0 ± 0.7
VREC (ml)
183 ± 135
256 ± 145
0.028
66.5 ± 47

Data are reported as mean ± SD. CINF, maximum inflation compliance; PIP, peak inspiratory pressure; PPLAT, plateau pressure; CRS, static respiratory system compliance; Pmci,DEF, point of maximum compliance increase of deflation curve; Pmcd,DEF, point of maximum compliance decrease of deflation curve; Pmcd,INF, point of maximum compliance decrease of inflation curve; Pmci,INF, point of maximum compliance increase of inflation curve; VREC, recruitable volume at 10 cmH2O.

Henzler et al. Critical Care 2005 9:R471   doi:10.1186/cc3772