ArticleJournal of the American Heart Association2020
Out-of-Hospital Cardiac Arrests and Wildfire-Related Particulate Matter During 2015-2017 California Wildfires.
Article in Journal of the American Heart Association, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 53 papers, 5 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
53 citing papers in PubMed, 5 syntheses or guidelines pooled it, 103 citations in OpenAlex.
- Association between extreme weather events and postoperative adverse outcomes: a systematic review.Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2025Pooled it
- Climate Change and Cardiovascular Health: A Systematic Review.JAMA cardiology · 2024Pooled it
- Health Effects of Wildfire Smoke Exposure.Annual review of medicine · 2024Pooled it
- Air Pollution and Temperature: a Systematic Review of Ubiquitous Environmental Exposures and Sudden Cardiac Death.Current environmental health reports · 2023Pooled it
- Quantification of the Effects of Droughts on Daily Mortality in Spain at Different Timescales at Regional and National Levels: A Meta-Analysis.International journal of environmental research and public health · 2020Pooled it
- The Effects of Smoke from Wildfires in the Western US on Urban Air Quality in Northern Nevada.Atmospheric pollution research · 2026Article
- Chemical complexity and enrichment in wildland-urban interface fire emissions: A case study of particulate matter, gas-phase pollutants, and ash from the 2025 Los Angeles fires.Journal of hazardous materials · 2026Article
- Article
- Burning issues: trends in newspaper coverage of wildfire events and health.Journal of public health (Oxford, England) · 2026Article
- Wildland-Urban Interface Fires: Toxic Physicochemical Properties of Emitted Particulate Matter and Impacts on Lung Macrophages.Environmental science & technology · 2026Article
- Field Evaluation of Do-It-Yourself Air Filtration Solutions for Evaporative Coolers to Reduce Ambient Particle Infiltration in Homes in Wildfire-Affected Communities.ACS ES&T air · 2026Article
- The Effect of Wildfire Exposure: Neurological Outcomes, Mental Health, and Epigenetic Insights.Genes · 2026Review
- Impact of Snowfall on Ambulance Response Times to Out-of-Hospital Cardiac Arrest - Nationally-Representative Population-Based Registry Analysis, 2009-2019.Circulation reports · 2026Article
- Occupational injury among firefighters in Canada: a trends analysis of fatality and time-loss injury claims (2007-2021).Injury epidemiology · 2025Article
- Wildland Fire-Related Smoke PMJournal of the American Heart Association · 2025Article
- Assessing the Impact of Wildfire Emissions on the Seasonal Cycle of CO and Emergency Room Visits in Alberta and Ontario, Canada.GeoHealth · 2025Article
- The Intersection of Socioeconomic and Environmental Factors in Aging: Insights from a Narrative Review.International journal of environmental research and public health · 2025Review
- Impact of Seasonal PMToxics · 2025Article
- Prothrombotic Biomarkers Are Not Altered by Wood Smoke: A Pilot Controlled Exposure Study.FASEB bioAdvances · 2025Article
- The Impacts of Housing Conditions on the Cardiopulmonary and Neurobehavioral Responses of Mice to High Temperature and Wildfire Smoke.Environmental science & technology · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Background The natural cycle of large-scale wildfires is accelerating, increasingly exposing both rural and populous urban areas to wildfire emissions. While respiratory health effects associated with wildfire smoke are well established, cardiovascular effects have been less clear. Methods and Results We examined the association between out-of-hospital cardiac arrest and wildfire smoke density (light, medium, heavy smoke) from the National Oceanic Atmospheric Association's Hazard Mapping System. Out-of-hospital cardiac arrest data were provided by the Cardiac Arrest Registry to Enhance Survival for 14 California counties, 2015-2017 (N=5336). We applied conditional logistic regression in a case-crossover design using control days from 1, 2, 3, and 4 weeks before case date, at lag days 0 to 3. We stratified by pathogenesis, sex, age (19-34, 35-64, and ≥65 years), and socioeconomic status (census tract percent below poverty). Out-of-hospital cardiac arrest risk increased in association with heavy smoke across multiple lag days, strongest on lag day 2 (odds ratio, 1.70; 95% CI, 1.18-2.13). Risk in the lower socioeconomic status strata was elevated on medium and heavy days, although not statistically significant. Higher socioeconomic status strata had elevated odds ratios with heavy smoke but null results with light and medium smoke. Both sexes and age groups 35 years and older were impacted on days with heavy smoke. Conclusions Out-of-hospital cardiac arrests increased with wildfire smoke exposure, and lower socioeconomic status appeared to increase the risk. The future trajectory of wildfire, along with increasing vulnerability of the aging population, underscores the importance of formulating public health and clinical strategies to protect those most vulnerable.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.