Chang WT, Wang CH, Lai CH, et al. - Among 291 patients (mean age was 56.0 years) receiving extracorporeal cardiopulmonary resuscitation, researchers explored the connection between oxygenation status and neurologic outcomes. Between 2000 and 2014, patients receiving extracorporeal cardiopulmonary resuscitation were included. In patients receiving extracorporeal cardiopulmonary resuscitation, oxygenation status during extracorporeal membrane oxygenation affects neurologic outcomes. It seems desirable to have the Pao₂ range of 77 to 220 mmHg, which is slightly narrower than previously described. In addition, the Pao₂/Fio₂ ratio was linked to outcomes in the analysis, suggesting that for postextracorporeal cardiopulmonary resuscitation patients both Pao2 and the Pao₂/Fio₂ ratio should be closely monitored during the early postcardiac arrest phase.