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Abstract
Key messages * After resuscitation from cardiac arrest, exposure of patients to both hypo- and hypercapnia is common within 24 h of ICU admission * Hypoxia and severe hyperoxia are uncommon findings early in the ICU stay * Both PaCO2 and PaO2 had an independent U-shaped relationship with hospital mortality * After adjustment for relevant confounders, hypocapnia and hypoxia were significant predictors of hospital mortality * A synergistic effect of concurrent derangements of PaCO2 and PaO2 was not observed Abbreviations ABG: Global incidences of out-of-hospital cardiac arrest and survival rates: systematic review of 67 prospective studies. Advanced life support: 2010 International Consensus on Cardiopulmonary Resuscitation and Emergency Cardiovascular Care Science with Treatment Recommendations. Arterial blood gas tensions after resuscitation from out-of-hospital cardiac arrest: associations with long-term neurologic outcome.