Incidence of Out-of-Hospital Cardiac Arrest on a Postholiday Weekday

Is a postholiday weekday associated with a higher out-of-hospital cardiac arrest incidence vs baseline weekdays in South Korea?In this cohort study of 203 471 adult cases over 11 years, a postholiday weekday was associated with a 9% higher out-of-hospital cardiac arrest incidence than baseline weekdays. This phenomenon was particularly pronounced among older adults, individuals with cardiac cause, and after 2 or more consecutive holidays.These findings suggest that the postholiday transition represents a period of increased cardiovascular vulnerability, underscoring the need for enhanced emergency medical preparedness during those times.

Corresponding Author: Myoung-Je Song, MD, Department of Emergency Medicine, International St Mary’s Hospital, Catholic Kwandong University College of Medicine, Incheon Metropolitan City 25, Simgok-ro 100beon-gil, Seo-gu, Incheon 22711, Republic of Korea (smj66@ish.ac.kr).

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