Impact of Extreme Temperature and Particulate Matter 2.5 on Outcomes of Out-of-Hospital Cardiac Arrest

IF 1.2 4区医学 Q3 EMERGENCY MEDICINE

Journal of Emergency Medicine Pub Date : 2025-02-01 DOI:10.1016/j.jemermed.2024.10.014

Yongyeon Choi MPH , Sangshin Park MPH, PhD

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引用次数: 0

Abstract

Background

Extreme temperature and particulate matter-2.5 (PM_2.5) are known to affect the outcomes of out-of-hospital cardiac arrest (OHCA). However, studies that examine their effects at the exact time of OHCA occurrence are limited.

Objective

This study aimed to investigate the impact of extreme cold, extreme heat, and PM_2.5 on OHCA outcomes at the time of occurrence.

Methods

We analyzed data from 82,497 OHCAs (aged > 18 years) in South Korea between January 2016 and December 2021. Extreme temperatures were defined as extreme cold (≤5th percentile) and extreme heat (≥95th percentile). PM_2.5 refers to particulate matter ≤ 2.5 micrometers, with extreme PM_2.5 defined as ≥95th percentile. The outcomes were survival to discharge and good neurological outcome, defined as a cerebral performance category of 1 or 2 at hospital discharge. We performed a multivariable logistic regression analysis to assess the impact of extreme temperature and PM_2.5 on OHCA outcomes.

Results

Extreme cold (-4.2°C to -20.2°C) showed no association with OHCA outcomes when compared to normal conditions (-0.9°C to 26.6°C). However, OHCAs during extreme heat (28.7°C to 39.3°C) showed a 15% significantly lower probability of survival to discharge (adjusted odds ratio [aOR]: 0.85, 95% confidence interval (CI): 0.74–0.98) compared to normal conditions. OHCAs during extreme PM_2.5 (56 to 218 µg/m³) were associated with 14% lower probability of survival to discharge (aOR: 0.86, 95% CI: 0.75–0.99) compared to normal PM_2.5 (0 to 43 µg/m³).

Conclusion

Extreme heat and PM_2.5 were significantly associated with a decreased probability of survival to discharge in OHCA patients.

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来源期刊

Journal of Emergency Medicine 医学-急救医学

CiteScore

2.40

自引率

6.70%

发文量

339

审稿时长

2-4 weeks

期刊介绍： The Journal of Emergency Medicine is an international, peer-reviewed publication featuring original contributions of interest to both the academic and practicing emergency physician. JEM, published monthly, contains research papers and clinical studies as well as articles focusing on the training of emergency physicians and on the practice of emergency medicine. The Journal features the following sections: • Original Contributions • Clinical Communications: Pediatric, Adult, OB/GYN • Selected Topics: Toxicology, Prehospital Care, The Difficult Airway, Aeromedical Emergencies, Disaster Medicine, Cardiology Commentary, Emergency Radiology, Critical Care, Sports Medicine, Wound Care • Techniques and Procedures • Technical Tips • Clinical Laboratory in Emergency Medicine • Pharmacology in Emergency Medicine • Case Presentations of the Harvard Emergency Medicine Residency • Visual Diagnosis in Emergency Medicine • Medical Classics • Emergency Forum • Editorial(s) • Letters to the Editor • Education • Administration of Emergency Medicine • International Emergency Medicine • Computers in Emergency Medicine • Violence: Recognition, Management, and Prevention • Ethics • Humanities and Medicine • American Academy of Emergency Medicine • AAEM Medical Student Forum • Book and Other Media Reviews • Calendar of Events • Abstracts • Trauma Reports • Ultrasound in Emergency Medicine