Oxygenation improves during the first 8 h of extended-duration prone positioning in patients with respiratory failure: a retrospective study

Table 1 Clinical characteristics of patients

	PP (n = 15)
Age, years	72.2 ± 7.8
Men, n (%)	11 (73%)
APACHE II score	19.0 ± 6.0
Cause of respiratory failure
Sepsis with pneumonia, n (%)	7 (47%)
Sepsis without pneumonia, n (%)	5 (33%)
Others, n (%)	3 (20%)
Severity of ARDS during ICU stay
Not ARDS, n (%)	3 (20%)
Mild, n (%)	1 (7%)
Moderate, n (%)	7 (46%)
Severe, n (%)	4 (27%)
Treatment in ICU
Vasopressor, n (%)	11 (73%)
RRT, n (%)	3 (20%)
Mode of MV during PV
APRV, n (%)	6 (40%)
SIMV, n (%)	4 (27%)
A/C, n (%)	3 (20%)
CPAP/PSV, n (%)	2 (13%)
Duration of PP (h): median (IQR)	47.5 (46.5–67)
MV before starting PP (days): median (IQR)	3 (2–6)
Hospital mortality, n (%)	7 (47%)

Values are expressed as the mean ± standard deviation, unless otherwise indicated. APACHE II score was calculated at the admission to ICU. PP prone positioning, APACHE II Acute Physiology and Chronic Health Evaluation II, ARDS acute respiratory distress syndrome, ICU intensive care unit, RRT renal replacement therapy, MV mechanical ventilation, APRV airway pressure releasing ventilation, SIMV synchronized intermittent mandatory ventilation, A/C assist/control, CPAP continuous positive airway pressure, PSV pressure support ventilation, IQR interquartile range.

ISSN: 2052-0492