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Table 3 Extended respiratory mechanics and clinical assessment of the study population during supine position and prone position

From: Awake prone position reduces work of breathing in patients with COVID-19 ARDS supported by CPAP

 

Supine

N = 40

Prone

N = 40

p

Mean difference† [95% CI]

Esophageal pressure swing, cmH2O

− 7 [− 9 to − 5]

− 6 [− 9 to − 5]

0.306

0.4 [− 0.4 to 1.1]

Dynamic transpulmonary pressure, cmH2O

17 [14 to 19]

16 [14 to 18]

0.34

− 0.4 [− 1.1 to 0.4]

Modified pressure–time product, cmH2O/min

152 [104 to 197]

118 [90 to 150]

 < 0.001

− 33 [− 47 to − 19]

Work of breathing, cmH2O * L /min

146 [120 to 185]

114 [95 to 151]

 < 0.001

− 27 [− 38 to − 17]

Borg Dyspnea Scale

0—none

1—very light

2—light

3—moderate

4—rather intense

29 (72)

3 (8)

5 (12)

1 (2)

2 (5)

37 (92)

2 (5)

1 (2)

0 (0)

0 (0)

0.005

− 0.5 [− 0.8 to − 0.2]

Non-invasive Work of Breathing Scale

1

2

3

4

20 (50)

12 (30)

5 (12)

3 (8)

31 (78)

8 (20)

1 (2)

0 (0)

0.001

− 0.5 [− 0.9 to − 0.2]

  1. CI confidence interval
  2. Data are presented as median [interquartile range] for continuous values unless otherwise specified
  3. †Supine Position taken as reference