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Table 2 Respiratory parameters at inclusion

From: Recruitability and effect of PEEP in SARS-Cov-2-associated acute respiratory distress syndrome

 All patients, n = 25Highly recruitable, n = 16Poorly recruitable, n = 9p value
VT (ml/kg PBW)6.0 [5.9–6.1]6.1 [5.9–6.1]6 [6–6.3]0.59
RR/min28 [26–30]27.5 [25–30]30 [28–31]0.1
VE, L/min12.3 [9.2–13]11.9 [9.6–13.6]12.6 [10.5–14.1]0.85
FiO2, %60 [40–65]55 [40–70]60 [45–65]0.47
PEEP, cmH2O12 [10–15]13 [12–15]10 [10–12]0.02
Pplat, cmH2O23 [21–24]23 [20–24]23 [21–27]0.32
PaO2, mmHg75 [65–94]77 [68–90]73 [62–99]0.9
PaO2/FiO2, mmHg135 [119–195]140 [123–196]121 [106–155]0.43
PaCO2, mmHg41 [38–44]41 [38–42]40 [36–45]0.97
Patients with airway closure > 5 cmH2O, n (%)6 (24)4 (25)2 (22)1
AOP in patients with airway closure > 5 cmH2O, cmH2O8 [7–10]8 [7–10]8 [6–10]1
  1. Data are presented as median [interquartile range] or number (percentage)
  2. VT tidal volume, PBW predicted body weight, RR respiratory rate, VE minute ventilation, FiO2 fraction of inspired oxygen, PEEP set positive end-expiratory pressure, Pplat plateau pressure, CRS compliance of the respiratory system, PaO2 partial pressure of arterial oxygen, PaCO2 partial pressure of arterial carbon dioxide, AOP airway opening pressure, R/I ratio recruitment-to-inflation ratio
  3. p-values refer to the comparison between the highly and poorly recruitable patients groups