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Table 2 Intracranial pressure and the change of intracranial pressure at each positive end-expiratory pressure level

From: Intracranial pressure responsiveness to positive end-expiratory pressure in different respiratory mechanics: a preliminary experimental study in pigs

Condition PEEP ICP ∆ICP Cumulative ∆ICP
(cm H2O) (mm Hg) (mm Hg) (mm Hg)
Normal 5 6 (3, 10.8)
10 6.5 (4, 11.8) 1 (1, 1) 1 (1, 1)
15 8 (5, 12.8) 1 (1, 1) 2 (2, 2)
20 9 (6, 13.5) 1 (1, 1) 3 (2.3, 3)
25 10 (7, 14.3) 1 (0.3, 1) 4 (3, 4)
CW 5 7.5 (5, 14.5)
10 8.5 (6.3, 16.5) 1.5 (1, 2) 1.5 (1, 2)
15 10 (8.3, 18.3) 2 (1, 2) 3 (3, 4)
20 11 (9.3, 20.3) 1 (1, 1.8) 4.5 (4, 5)
25 13 (11.3, 21.3) 1.5 (1, 2) 6 (5.3, 6.8)
L 5 6.5 (5, 11.8)
10 7 (5.3, 11.8) 0 (0, 0.8) 0 (0, 0.8)
15 8.5 (6.3, 12.5) 1 (1, 1) 1 (1, 1.8)
20 9 (6.8, 12.5) 0.5 (0, 1.8) 2 (1, 3)
25 9.5 (7.3, 12.5) 0 (0, 1) 2 (1.3, 3.8)
L + CW 5 10.5 (6, 13)
10 11.5 (7, 19.8) 1 (0.3, 1) 1 (0.3, 1)
15 12 (8, 14) 1 (0, 1) 1 (1, 2)
20 13.5 (9.3, 14.8) 1 (0.3, 2) 2.5 (1.3, 3.8)
25 14.5 (10.3, 16.5) 1 (1, 1) 4 (2.3, 4.8)
L + CW + IH 5 37 (31.8, 39.5)
10 35 (29.3, 36.8) -2 (−3.8, −1.3) -2 (−3.8, −1.3)
15 32.5 (28.8, 35.5) -2 (−2, −1) −4 (−5.8, − 3)
20 30 (28.5, 33.3) −1.5 (−3.5, 0) −6 (−9.5, − 3.3)
25 26 (26, 30.8) −3.5 (−4, − 1.3) −10 (− 13.5, − 5.5)
L + IH 5 34 (30.3, 35)
10 31 (29.3, 34.5) −1 (− 3.5, −0.3) −1 (− 3.5, −0.3)
15 30 (26.3, 33.8) − 2 (− 2.8, − 0.3) − 3 (− 5.8, − 1)
20 26 (22.3, 32.8) −2.5 (− 5.5, − 1) −7.5 (− 11.3, − 1.8)
25 24 (20.5, 30) −2 (− 3.5, − 1.3) −9.5 (− 12.5, − 5.3)
  1. Data are presented as median (interquartile range)
  2. ICP intracranial pressure, PEEP positive end-expiratory pressure