• Mesut Gurbuz, Selen Acehan, Salim Satar, Muge Gulen, Sarper Sevdımbas, Cagdas Ince, and Engin Onan.
• Department of Emergency Medicine, Ministry of Health Kilis Prof. Dr. Alaeddin Yavasca Hospital, Kilis, Turkey.
• Ir J Med Sci. 2024 Jun 1; 193 (3): 156115721561-1572.

PurposeTo determine the factors affecting mortality as a result of the analysis of the demographic and clinical characteristics and laboratory parameters of patients whose serum Na value was determined to be 125 mEq/L or below at the time of admission to the emergency department (ED).MethodPatients over 18 years of age who admitted to the ED of a tertiary hospital between September 2021 and September 2022 and whose serum sodium level was determined to be 125 mEq/L and below were included in the study. Demographic and clinical characteristics, admission complaints, medications used, Charles comorbidity index (CCI), laboratory parameters, and outcomes of the patients included in the study were recorded in the data form.ResultsThree hundred ninety-nine patients were included in the study. When the 30-day mortality of the patients is examined, the mortality rate was found to be 21.6%. In the analyses performed for the predictive power of laboratory parameters for mortality, it was determined that the highest predictive power among the predictive values determined by the area under the curve (AUC) was the albumin level (AUC 0.801, 95% CI 0.753-0.849, p < 0.001). In the binary logistic regression analysis, urea and albumin were independent predictors of 30-day mortality.ConclusionAccording to study data, albumin and urea levels are independent predictors of 30-day mortality in patients diagnosed with severe hyponatremia in the emergency department.© 2024. The Author(s), under exclusive licence to Royal Academy of Medicine in Ireland.

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