Extreme heat was linked to a wider range of acute-care diagnoses than heat illness alone
AI-summarized from the linked source. Educational brief, not medical advice.
Brief summary
A Chicago multicenter study linked extreme heat with increased acute-care visits across fluid-balance, renal, dermatologic, neurologic, behavioral, vascular, and injury diagnoses—not only explicitly coded heat illness.
What NurseJet pulled from the source
Researchers analyzed 916,904 emergency and urgent-care visits among 372,140 adults across four health systems from 2011 through 2023. Their two-stage heat-wide analysis retained 33 clinically reportable diagnoses with elevated cumulative odds over the day of exposure through three days later.
Why this matters for nurses
Emergency nurses may encounter heat-related morbidity as dehydration, kidney dysfunction, neurologic worsening, skin injury, falls, or other presentations rather than a heat-illness label. Broader heat-exposure screening can add context to assessment while standard diagnostic evaluation continues.
Bedside takeaway
Ask about recent heat exposure across a broad range of acute presentations while continuing the standard diagnostic workup.
How This Applies in Practice
Use this when: Assessing an adult with a new acute complaint during an extreme-heat event or within the following several days.
On your shift
- Ask about time outdoors, indoor cooling access, fluid intake and losses, medications, mobility, and when symptoms began relative to the heat.
- Assess temperature, mental status, circulation, volume status, skin findings, and the presenting complaint without anchoring on a heat diagnosis.
- Escalate severe hyperthermia, altered mentation, hemodynamic instability, major electrolyte or renal abnormalities, or significant injury promptly.
Key takeaways
- The study analyzed 916,904 acute-care visits among 372,140 adults across four Chicago health systems.
- Thirty-three clinically reportable diagnoses remained associated with extreme heat after the two-stage analysis.
- Associated categories included fluid-balance and renal disorders, dermatologic and pressure-related conditions, multiple sclerosis, and several injuries and external causes.
- The observed associations covered the day of heat exposure through the following three days and do not by themselves prove heat caused each diagnosis.
Practice implications
- During and after extreme heat, ask about exposure, cooling access, hydration, medications, mobility, and symptom timing. Pair temperature and volume-status assessment with the presenting complaint, and escalate instability, altered mentation, severe hyperthermia, or organ dysfunction immediately.
Limitations & cautions
- This observational study used diagnosis codes and data from four Chicago health systems, so coding, local climate, and population differences limit generalizability. Associations cannot establish causation, and the abstract does not provide effect estimates for each retained diagnosis.
- AI-summarized from the linked source. Review the original article before applying to practice.
Citations
Exact source links
Public citations are filtered to exact credible source pages. Homepage-only or invalid links stay in admin review and are not shown here.
Science advances (PubMed)
Science advances (PubMed). Identifying heat-related diagnoses in emergency department visits among adults in Chicago: A heat-wide association study.
https://pubmed.ncbi.nlm.nih.gov/42647618/
Professional education only
