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During the congress, E-Posters will be accessible to all participants on the congress website 24/7, as well as in the E-poster stations in the congress center.
Preparing your E-Poster
Please review the E-Poster format requirements carefully when preparing your E-Poster. Should your E-Poster not meet the mentioned requirements, it may not be displayed as described above.
E-Poster Submission Deadline
Please prepare and upload your E-Poster no later than March 14, 2026 11.59PM CET. After this date, you will no longer be able to prepare and upload your E-poster and it will not be displayed and accessible on the congress website.
Please follow the instructions below to input your abstract title.
Abstract titles should be brief and reflect the content of the abstract.
Clarifying the characteristics of electrolyte disturbances, including seasonal variations, in both inpatients and outpatients, may help in developing preventive and therapeutic strategies. This study aimed to investigate the prevalence and clinical features of electrolyte disturbances in hospital and community settings.
We conducted a cross-sectional study at Kindai University Hospital. Adults aged ≥18 years who underwent serum electrolyte measurements (sodium, potassium, calcium, phosphate, and magnesium) on five representative weekdays in each season of 2024 were included. Electrolyte disturbances were defined according to the Common Terminology Criteria for Adverse Events (CTCAE) v5.0. Hypophosphatemia (<2.0 mg/dL) and hyperphosphatemia (>6.0 mg/dL) were defined clinically, as they are not defined in CTCAE. Prevalence rates and clinical characteristics of electrolyte disturbances were compared between inpatients and outpatients using descriptive statistics.
A total of 19,489 electrolyte measurements from 15,457 patients were included. The mean age was 66.9 years, 50.5% were men, and the mean estimated glomerular filtration rate was 66.4 mL/min/1.73m². Electrolyte disturbances were more common among inpatients than outpatients. The inpatient-to-outpatient ratio was highest for hypernatremia (19.5), while lower ratios (2.3-4.4) were observed for hypomagnesemia, hypocalcemia, hyperkalemia, and hyperphosphatemia.
The prevalence of hyponatremia among outpatients were higher in summer (0.52 events per patient) than in other seasons (0.23-0.39 events per patient), although the difference was not statistically significant. Otherwise, no seasonal variation was observed. Phosphate and magnesium measurements were less common (approximately one-fifth and one-tenth, respectively, compared to sodium and potassium). Magnesium measurements were most frequently requested by oncologists and hematologists for both inpatients and outpatients. In contrast, phosphate measurements were most ordered by nephrologists for outpatients and by gastroenterologists for inpatients. The prevalence rate of hyponatremia was highest among outpatients treated at emergency department and among inpatients treated by pulmonologists. Hyperkalemia was most prevalent among patients managed by emergency physicians, followed by the nephrologists, in the outpatient setting. It was also most prevalent in inpatients treated at intensive care units, followed by those treated by nephrologists.
Electrolyte disturbances were more frequent in inpatients than in outpatients. Inpatient to outpatient rates, and distribution by subspecialities vary depending on electrolyte disturbances, which suggest different etiologies.
