Physiological effects of awake prone position in acute hypoxemic respiratory failure

Table 1 Characteristic of patients at baseline

Age, years	66 [62–75]
Sex, female, N (%)	2 (13)
Height, cm	175 [170–178]
Body mass index, kg/m²	28 [24–30]
SAPS II^a	31 [29–37]
SOFA at study inclusion^b	2 [2–2]
COVID-19 as cause of respiratory failure, N (%)	8 (53)
Hematological malignancies, N (%)	5 (33)
Duration of noninvasive respiratory support before enrolment, h
Noninvasive ventilation	0 [0–0]
Continuous positive airway pressure	0 [0–0]
High-flow nasal oxygen	0 [0–12]
Bilateral infiltrates at study inclusion^c, N (%)	14 (93)
PaO₂/FiO₂ during face mask O₂, mmHg	116 [97–127]
PaCO₂ during face mask O₂, mmHg	34 [27–36]
Glasgow Coma Scale score on inclusion	15 [15–15]
Need for endotracheal intubation, N (%)	4 (27)
Length of ICU stay, days	13 [5–19]
ICU mortality, N (%)	6 (40)

Data are expressed as medians [Interquartile range]. Unless specified otherwise
^aSAPS II was calculated from 17 variables at enrollment. Information about previous health status. And information obtained at admission. Scores range from 0 to 163. With higher scores indicating more severe disease
^bSOFA score was calculated from 6 variables at enrollment. Information about previous health status. And information obtained at admission. Scores range from 0 to 24. With higher scores indicating more severe disease
^cAll patients received chest X-ray the day of enrollment

ISSN: 1364-8535