Acute cardiac care & resuscitation
Seasonal Variation in the Incidence of In-Hospital Cardiac Arrest
Authors' conclusion
Therefore, seasonal variation exists, with a higher IHCA event rate in winter than summer.
Study context
- Population
- Hospitalised patients, US National Inpatient Sample, 2005–2019
- Exposure
- Winter vs summer
- Outcome
- Seasonal trends in incidence of IHCA, overall and by sex, age and region
Methodological detailsNational Inpatient Sample, 2005–2019
- National Inpatient Sample
- 2005–2019
Main finding
As reported in the abstract
Incidence of IHCA
Odds ratio
1.13
P < 0.001
2019, unadjusted
Adjusted odds ratio
1.08
P = 0.033
2019, risk-adjusted
Observational data: associations, not effects.
Further findings
Cause of admission by shockable vs nonshockable IHCA
- Shockable IHCA mainly admitted for cardiac, nonshockable for noncardiac conditions
In-hospital mortality after IHCA
- No seasonal variation
Original publication
Seasonal Variation in the Incidence of In-Hospital Cardiac Arrest. JACC Clin Electrophysiol. Published 21 June 2023. doi:10.
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