Study Links Temperature Extremes to Increased Heart Failure Hospitalizations
Source Summary
A study published in JACC and presented at ESC Congress 2026 found that short-term exposure to cold spells, lower ambient temperatures, and higher ambient temperatures increase the risk of heart failure hospitalization. Data from Sweden demonstrate how temperature extremes can trigger sudden worsening of illness and underscore the need for health systems to prepare for environmental stressors.
Why it matters
Health systems need to anticipate and prepare for increased heart failure hospitalizations during periods of temperature extremes to manage patient demand and outcomes.



