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Table 11 Variables associated with ROSC in cardiac arrest

From: Partial pressure of end-tidal carbon dioxide successful predicts cardiopulmonary resuscitation in the field: a prospective observational study

Variable OR (95% CI) P value
Intial rhythm (VF/VT) 2.13 (1.17–4.22) 0.02
Female sex 1.58 (1.14–1.87) 0.04
Time arrival 1.69 (1.37–2.56) 0.01
Witness 1.65 (1.29–3.14) 0.02
Bystander CPR 3.26 (1.89–8.51) 0.01
Initial PetCO2 21.68 (9.72–38.37) <0.0001
Average PetCO2 19.48 (7.53–33.86) <0.001
10 minute PetCO2 14.37 (6.65–28.63) <0.001
15 minute PetCO2 17.41 (7.62–24.57) <0.001
20 minute PetCO2 24.86 (10.11–42.73) <0.001
Max PetCO2 12.23 (4.83–23.64) <0.001
Final PetCO2 18.07 (6.93–28.34) <0.001
  1. CI, confidence interval; CPR, cardiopulmonary resuscitation; OR, odds ratio; PetCO2, partial pressure of end-tidal carbon dioxide; ROSC, restoration of spontaneous circulation; VF, ventricular fibrillation; VT, ventricular tachycardia.