Dataset Information

Summertime acute heat illness in U.S. emergency departments from 2006 through 2010: analysis of a nationally representative sample.

ABSTRACT:

Background

Patients with acute heat illness present primarily to emergency departments (EDs), yet little is known regarding these visits.

Objective

We aimed to describe acute heat illness visits to U.S. EDs from 2006 through 2010 and identify factors associated with hospital admission or with death in the ED.

Methods

We extracted ED case-level data from the Nationwide Emergency Department Sample (NEDS) for 2006-2010, defining cases as ED visits from May through September with any heat illness diagnosis (ICD-9-CM 992.0-992.9). We correlated visit rates and temperature anomalies, analyzed demographics and ED disposition, identified risk factors for adverse outcomes, and examined ED case fatality rates (CFR).

Results

There were 326,497 (95% CI: 308,372, 344,658) cases, with 287,875 (88.2%) treated and released, 38,392 (11.8%) admitted, and 230 (0.07%) died in the ED. Heat illness diagnoses were first-listed in 68%. 74.7% had heat exhaustion, 5.4% heat stroke. Visit rates were highly correlated with annual temperature anomalies (Pearson correlation coefficient 0.882, p = 0.005). Treat-and-release rates were highest for younger adults (26.2/100,000/year), whereas hospitalization and death-in-the-ED rates were highest for older adults (6.7 and 0.03/100,000/year, respectively); all rates were highest in rural areas. Heat stroke had an ED CFR of 99.4/10,000 (95% CI: 78.7, 120.1) visits and was diagnosed in 77.0% of deaths. Adjusted odds of hospital admission or death in the ED were higher among elders, males, urban and low-income residents, and those with chronic conditions.

Conclusions

Heat illness presented to the ED frequently, with highest rates in rural areas. Case definitions should include all diagnoses. Visit rates were correlated with temperature anomalies. Heat stroke had a high ED CFR. Males, elders, and the chronically ill were at greatest risk of admission or death in the ED. Chronic disease burden exponentially increased this risk.

SUBMITTER: Hess JJ

PROVIDER: S-EPMC4216158 | biostudies-literature | 2014 Nov

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Summertime acute heat illness in U.S. emergency departments from 2006 through 2010: analysis of a nationally representative sample.

Hess Jeremy J JJ Saha Shubhayu S Luber George G

Environmental health perspectives 20140617 11

<h4>Background</h4>Patients with acute heat illness present primarily to emergency departments (EDs), yet little is known regarding these visits.<h4>Objective</h4>We aimed to describe acute heat illness visits to U.S. EDs from 2006 through 2010 and identify factors associated with hospital admission or with death in the ED.<h4>Methods</h4>We extracted ED case-level data from the Nationwide Emergency Department Sample (NEDS) for 2006-2010, defining cases as ED visits from May through September wi ...[more]

PMID: 24937159

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Dataset Information

Summertime acute heat illness in U.S. emergency departments from 2006 through 2010: analysis of a nationally representative sample.

Background

Objective

Methods

Results

Conclusions

Publications

Summertime acute heat illness in U.S. emergency departments from 2006 through 2010: analysis of a nationally representative sample.

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