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Table 1 Respiratory mechanics data and regression parameters

From: Effects of descending positive end-expiratory pressure on lung mechanics and aeration in healthy anaesthetized piglets

 

Descending PEEP titration steps

PEEPappl (cmH2O)

16.4 (16.0–16.7)

12.5 (12.0–12.6)

8.3 (7.9–8.7)

6.3 (6–6.7)

4.1 (3.7–4.6)

0.8 (0.5–1.0)

Ppeak (cmH2O)

27.6 (24.4–31.3)

19.4 (18.8–20.6)

15.0 (13.5–17.8)

12.5 (11.4–13.1)

10.4 (9.6–11.2)

8.2 (6.9–10.4)

Pplateau (cmH2O)

24.8 (22.5–28)

18.0 (17.4–19.4)

13.6 (12.3–15)

11.1 (10.3–11.8)

9.0 (8.4–9.8)

6.5 (5.6–7.5)

Ers (cm/l)

56.4 (41.7–71.9)

33.6 (30.5–36.8)

29.3 (26.2–32.0)

29.3 (25.0–34.6)

29.6 (27.2–31.6)

36.2 (30.4–42.6)

Rrs (cmH2Ol-1 s)

7.2 (5.3–8.4)

5.7 (4.9–6.9)

5.8 (5.3–7.0)

6.2 (5.4–7.7)

5.7 (5.3–8.1)

7.1 (6.3–10.1)

PEEPest (cmH2O)

16.3 (15.9–16.6)

12.3 (12–12.5)

8.1 (7.9–8.6)

6.2 (6.0–6.5)

4.0 (3.8–4)

0.7 (0.4–0.8)

R 2

0.979 (0.968–0.983)

0.978 (0.974–0.982)

0.976 (0.964–0.976)

0.977 (0.964–0.979)

0.977 (0.969–0.979)

0.978 (0.970–0.982)

  1. PEEPappl, applied positive end-expiratory pressure; Ppeak, peak ventilator pressure; Pplatea, plateau ventilator pressure; Ers, elastance of the respiratory system; Rrs, resistance of the respiratory system; PEEPest, estimated positive end-expiratory pressure; R2, coefficient of determination of the regression analysis. Data are shown as medians and ranges.