Table 3 Patient ventilator interaction indices at different levels of PEEPe for PS_P and PS_N

T_TRIG (ms)

PS_P

276 (169, 370)^z

198 (156, 357)^az

183 (143, 312)^abz

154 (33, 236)^abcz

<0.001

PS_N

69 (56, 82)^x

54 (32, 70)

59 (17, 82)

76 (54, 90)

T_CYC-OFF (ms)

PS_P

76 (21, 36)^z

126 (44, 401)^az

130 (47, 432)^abz

106 (14, 314)^abcz

<0.001

PS_N

12 (8, 14)^x

8 (2, 14)

5 (−2, 12)

2 (−7, 10)

NeuroSync index (%)

PS_P

29.1 (13.9, 46.8)^z

25.3 (15.5, 40.9)^az

20.6 (13.5, 37.1)^abz

17.7 (10.5, 38.9)^abcz

<0.001

PS_N

5.6 (4.2, 7.8)^x

6.0 (4.9, 8.3)

6.2 (5.1, 8.5)

6.7 (3.8, 10.3)

EAdi without assist (%)

PS_P

0.8 (0, 10.1)

1.1 (0, 18.7)

0 (0, 10.8)

0 (0, 11.4)

<0.001

PS_N

0 (0, 0)

0 (0, 0)

0 (0, 0)

0 (0, 0)

Synchrony (inside box) (%)

PS_P

4.7 (0, 16.3)^z

7.8 (0, 20)^az

11.5 (0, 37.4)^abz

7 (0.2, 46.3)^abcz

<0.001

PS_N

89.4 (76.2, 97.9)^x

91.3 (76, 95.7)

88 (78, 93)

80 (63.4, 97.4)

Dyssynchrony (outside box) (%)

PS_P

83.5 (76.3, 92)^z

79.3 (63, 86.7)^az

76.9 (62, 87.5)^abz

70.9 (52.3, 89.3)^abcz

<0.001

PS_N

9 (2.1, 23.1)^x

7.3 (1.8, 21.1)

10.8 (6.5, 17.4)

18.6 (2.1, 32.7)