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Table 3 Data on oxygen tension analyses in the post cardiac arrest period

From: Associations between partial pressure of oxygen and neurological outcome in out-of-hospital cardiac arrest patients: an explorative analysis of a randomized trial

Variable All patients
n = 869
Hyperoxemia
n = 199
Normoxemia
n = 569
Hypoxemia
n = 112
Hyper- and hypoxemia
n = 11
TWM-PaO2 14.0 (12.2–16.2) 15.9 (14.1–18.2) 13.8 (12.2–15.6) 12.2 (10.7–14.0) 13.90 (12.7–15.3)
TWM-PaCO2 5.3 (4.9–5.7) 5.3 (4.9–5.7) 5.3 (4.9–5.7) 5.4 (5.0–6.0) 5.4 (5.2–5.6)
PaO2 T-1 19.0 (12.1–33.8) 52.7 (42.7–61.4) 16.9 (12.1–24.5) 9.6 (7.3–15.5) 37.8 (20.3–49.8)
PaO2 T0 17.1 (11.8–25.7) 38.8 (21.2–52.9) 16.0 (11.8–22.0) 11.1 (8.4–16.5) 41.5 (22.0–52.2)
PaO2 T4 15.2 (12.2–19.7) 16.5 (13.1–21.3) 15.1 (12.4–19.6) 12.4 (9.8–17.1) 14.6 (11.1–17.8)
PaO2 T12 13.2 (11.3–16.2) 13.7 (11.5–16.6) 13.2 (11.3–16.3) 12.0 (10.3–14.9) 11.7 (9.6–14.9)
PaO2 T20 12.7 (11.0–15.1) 12.9 (11.3–15.5) 12.7 (11.0–15.0) 12.1 (10.2–14.5) 12.1 (10.0–15.0)
PaO2 T28 11.9 (10.5–14.2) 12.0 (10.4–13.9) 12.2 (10.7–14.4) 10.9 (9.7–13.5) 10.9 (9.8–12.8)
PaO2 T32 11.7 (10.4–13.7) 11.7 (10.3–13.7) 11.9 (10.6–13.8) 10.8 (9.4–12.3) 9.8 (8.2–11.4)
PaO2 T36 11.3 (10.2–13.5) 11.4 (10.2–13.5) 11.5 (10.3–13.7) 10.4 (8.9–11.8) 9.2 (8.3–10.6)
TWM pH 7.35 (7.31–7.39) 7.35 (7.32–7.39) 7.35 (7.31–7.39) 7.33 (7.28–7.37) 7.35 (7.31–7.39)
TWM PAW 12.5 (10.3–16.6) 12.6 (10.3–15.6) 12.6 (10.2–16.9) 11.9 (10.5–15.4) 12.9 (11.1–14.2)
TWM- BE − 3.5 (−5.7 to − 1.5) − 3.6 (− 5.9 to − 1.6) − 3.6 (− 5.8 to − 1.5) − 3.2 (− 5.2 to − 1.5) − 3.65 (− 5.3 to − 2.2)
TWM-FiO2% 41.4 (34.9–49.7) 39.2 (33.8–45.0) 41.4 (34.7–49.4) 47.9 (39.0–59.3) 40.1 (34.3–50.6)
TWM-PaO2/FiO2 35.1 (26.8–43.8) 42.2 (34.2–50.0) 34.1 (26.8–42.3) 26.8 (20.4–34.7) 34.4 (27.2–43.3)
  1. PaO2 arterial partial pressure of oxygen, PaCO2 arterial partial pressure of carbon dioxide. PaO2 and PaCO2 are displayed in kilopascal (kPa). Hyperoxemia PaO2 > 40 kPa, Hypoxemia PaO2 < 8 kPa, Normoxemia PaO2 values not defined hyper- or hypoxemia. TWM time weighted mean, PAW airway pressure, BE base excess, FiO2 fraction of inspired oxygen. Values are median with interquartile ranges (IQR). Patients exposed to hyper- and hypoxemia are also included in the separate hyperoxemia and hypoxemia exposure groups. T measuring time point in hours after inclusion into the TTM trial, T-1 first blood gas analysis after admission but before inclusion