Letter by Eastwood et al Regarding Article, “Association Between Postresuscitation Partial Pressure of Arterial Carbon Dioxide and Neurological Outcome in Patients With Post–Cardiac Arrest Syndrome”
To the Editor:
We read the article by Roberts and colleagues1 with interest. Although we agree that hypocapnia has been demonstrated to be common and is a predictor of poor neurological outcome after cardiac arrest, we are concerned that the findings may lack external validity.
In a recent study involving 16 542 patients admitted to 125 Australian and New Zealand intensive care units after cardiac arrest between 2000 and 2011,2 we found that hypocapnia and …