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  • Dr. Steven Horwitz

Cardiac Arrest - Morning, Noon, or Night?


"One of the deepest mysteries about SCD has been its timing. Health experts have known for more than 30 years that the erratic heartbeat responsible for SCD strikes most often at certain times of the day. The peak risk hours range from 6 a.m. to 10 a.m., with a smaller peak in the late afternoon." Source


But, more recently this study stated, "in this contemporary community-based study, we failed to observe the expected morning peak or the Monday peak in SCA, duplicating recent findings in primary prevention defibrillator patients. The significant public health implications of these findings merit further investigation."


So, what about Out of Hospital Cardiac Arrest Survival? This paper states, "The principal finding of this study is that night-time is significantly associated with lower survival in OHCA patients."


Bottom line: No matter what time sudden cardiac arrest occurs, preparation and education are the key. Get trained! Call Rockwall CPR today!

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