Environmental factors are proving critical for vulnerable populations. A retrospective study from a Madrid hospital examined 336 end-stage kidney disease patients receiving haemodialysis between 2016 and 2024. During this period, clinicians recorded 563 hospital admissions and 90 deaths.
Researchers focused on the connection between meteorological conditions, air pollution, and clinical outcomes. Sulphur dioxide emerged as the most consistent predictor of adverse events. The data shows the pollutant increases the risk of both mortality and hospital admission across immediate and cumulative exposure models.
Long-term nitrogen dioxide exposure also correlated with mortality, suggesting a cumulative toxic effect rather than a reaction to short-term spikes. Weather played a role as well. Increased solar radiation accelerated mortality risk in non-linear survival models, while atmospheric pressure appeared to offer a protective effect against hospital admissions.
The findings urge healthcare systems to integrate environmental data into clinical risk prediction. Monitoring air quality could help nephrologists anticipate periods of elevated risk, allowing for more tailored and proactive patient management in polluted settings.