Internal Medicine · General Practice ·
Diuretic-Associated ED Adverse Reactions Rose With Higher Temperatures
A prospective observational analysis of the ADRED study found an association between higher five-day mean temperatures and suspected diuretic-related adverse drug reactions leading to emergency department admission. The relationship accelerated above an estimated temperature breakpoint of approximately 15.7°C; the source does not report the number of participants or admissions analyzed.
- Higher temperatures were associated with more suspected diuretic-related reactions.
- A regression model estimated a breakpoint near 15.7°C.
- Observational findings do not establish causation or a clinical threshold.
Researchers analyzed data from the prospective ADRED study of adverse drug reactions leading to emergency department (ED) admission. Using standardized causality assessments of documented medicines, they examined the relationship between five-day mean ambient temperature and the ratio of suspected diuretic-related adverse reactions to all diuretic uses. Linear, polynomial and segmented regression models were applied; the source does not report the sample size.
In linear regression, higher temperatures were associated with more diuretic-related adverse reactions (β=0.0035; 95% CI, 0.0015–0.0054; R²=0.188). A segmented model estimated a breakpoint at about 15.7°C. Above it, the slope increased (β=0.0201; 95% CI, 0.0068–0.0333). A spline model also showed a nonlinear increase at higher temperatures.
The findings suggest that people taking diuretics may be more vulnerable to cumulative heat exposure, but the observational analysis establishes an association, not causation. The reported temperature breakpoint is a model estimate, not a validated clinical threshold, and the study did not test whether medication changes or other interventions reduce risk. The authors reported no competing interests; the study was supported by German federal and European Union grants.
In practice
The ADRED analysis found that suspected diuretic-associated adverse reactions leading to ED admission increased with higher five-day mean temperatures, with a model-estimated rise in slope above approximately 15.7°C. This suggests heat exposure may be relevant when considering risk in people taking diuretics. However, the evidence is observational and does not establish causation; the breakpoint is not a validated clinical threshold, and the study did not assess medication adjustments or other preventive interventions. It does not support a specific change in prescribing.
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BMC Medicine: Diuretic-associated admissions to the emergency department – too hot to handle? Results from the ADRED-study ↗This is an automated AI-condensed summary that has not yet been reviewed by an editor. Always consult the full item at the original source.