Abstract 89: Survival From in-Hospital Cardiac Arrest During Nights and Weekends From Japanese Registry of CPR (JRCPR)
Backgrounds: It has been reported that survival rates from in-hospital cardiac arrest were lower during nights and weekends from the National Registry of Cardiopulmonary Resuscitation (NRCPR). However, available data about in-hospital cardiac arrest is extremely limited and has not been investigated from aspects of time of day and day of week in Japan.
Methods: The patients with in-hospital cardiopulmonary arrest (CPA) were registered prospectively from 11 hospitals, between January 2008 and December 2009 in Japan. We divided into two groups (Day/evening group and night group) based on the onset time of CPA. Day/evening was defined as 7:00 AM to 10:59 PM and night as 11:00 PM to 6:59 AM. Rate of return of spontaneous circulation (ROSC), survival at 24 hours, and favorable neurological outcomes were compared.
Results: A total of 358 cases of in-hospital cardiac arrest occurred during day/evening hours (including 274 on weekdays and 84 on weekends), and 133 cases occurred during night hours (including 103 on weekdays and 30 on weekends). Rate of ROSC (70.2% vs. 49.6%; p<.0001), survival at 24 hours (55.3% vs. 36.8%; p<.001), and favorable neurological outcomes (20.9% vs. 8.2%; p<.001) were significantly lower during the night compared with day/evening. Incidence of witnessed CPA and percentage of monitored patients were not significantly different between day/evening and night. However, the prevalence of asystole at first documented pulseless rhythm was higher in night group. During day/evening hours, in contrast to NRCPR, rate of ROSC (71.9% vs. 64.6%; p=0.22), survival at 24 hours (55.8% vs. 53.6%; p=0.80) and favorable neurological outcomes (21.5% vs. 19.0%; p=0.76) were not significantly different between weekdays and on weekends. During night hours, these endpoints were similar between day/evening and night as well as the report from NRCPR.
Conclusion: According to JRCPR, survival rates from in-hospital cardiac arrest are lower during nights. Unlike NRCPR, survival rates are similar on weekends in Japanese population.
- © 2010 by American Heart Association, Inc.