Letter by Lopez-Messa and Alonso-Fernandez Regarding Article, “Temporal Differences in Out-Of-Hospital Cardiac Arrest (OHCA): Incidence and Survival”
To the Editor:
We read with great interest the article by Bagai et al,1 “Temporal Differences in Out-Of-Hospital Cardiac Arrest (OHCA): Incidence and Survival,” which reports a study conducted in OHCA patients enrolled in CARES Registry. The authors conclude that there is significant temporal variability in the incidence of and survival after OHCA, with 2 peaks of incidence, in the morning and in early evening.
Although we agree with the authors about the use as reference time emergency system call, the appearance of a circadian …