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Table 2 Maximal oxygen pressure (PaO 2 ), inspired oxygen concentration (FiO 2 ) and P/F ratio according to location of the cardiac arrest

From: Prevalence and factors correlating with hyperoxia exposure following cardiac arrest – an observational single centre study

  All patients OHCA IHCA ICUCA P-value
n = 119 n = 51 n = 48 n = 20
PaO 2 max (mmHg)
  0-1 h 180 (101–349) 265 (145–466) 124 (91–211) 177 (92–390) 0,001
  1-24 h 212 (126–318) 295 (205–441) 169 (123–247) 138 (120–234) 0,001
FiO 2 max
  0-1 h 100 (50–100) 100 100 (50–100) 100 (50–100) 0,001
  1-24 h 100 (30–100) 100 (35–100) 100 (30–100) 90 (35–100) 0,233
P/F -ratio
  0-1 h 187 (105–358) 265 (145–466) 127 (93–222) 218 (136–390) 0,001
  1-24 h 293 (178–425) 408 (286–518) 226 (150–333) 230 (140–389) 0,001
Hyperoxia exposure 41% 65% (33) 21% (10) 30% (6) 0,001
  0-1 h 28% (30) 44% (20) 12% (5) 26% (5) 0,005
  1-24 h 28% (32) 47% (24) 11% (5) 16% (3) 0,000
  1. * The maximal PaO2 values and P/F-ratios are shown with median and IQR. The maximal Fi02 values with median and maximum and minimum values.