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Study identifier: NCT06408077 Synced from ClinicalTrials.gov · July 29, 2026
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Regulation of Extracellular Sodium in End Stage Renal Disease Upon Volume and Electrolyte Challenges

Condition: Hyponatremia  ·  Sponsor: University of Cologne

PhaseNA
Planned participants60
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

Hyponatremia is the most common electrolyte disorder of all and can be observed in more than 30% of all patients in hospitals. Osmotic homeostasis of body fluids is essential for survival of all living creatures. It is widely accepted that extra- and intracellular osmolalities are in equilibrium at all times and thus, changes in the extracellular osmolality will lead to either shrinkage or swelling of cells which can be detrimental. In severe cases, it can lead to swelling of the brain and death. Even in less dramatic scenarios, symptoms such as epileptic seizures, headaches, depression and dizziness exist, leading to an increased risk of fractures, hospital admissions and a considerable burden for affected patients. As short-term defense against osmotic stress, each individual cell is capable of actively externalizing or internalizing osmotically active solutes which restores normal or near-normal cell volume at the expense of an altered milieu interior. Obviously, there must be limitations to this strategy if intracellular integrity is meant to be kept stable. It has therefore been postulated that, apart from this cell-immanent mechanism, extracellular and intracellular electrolyte stores could assist in buffering osmotic imbalances. The Edelman formula states that extracellular sodium is determined by the total amount of exchangeable body sodium (the major extracellular cation) plus potassium (the major intracellular cation) divided by total body water. Several studies h…

This description comes directly from the study's public registry record.

Talk to the study team

Volker Burst, MD  ·  +49 221 478 86285  ·  volker.burst@uk-koeln.de

Sadrija Cukoski, MD  ·  sadrija.cukoski@uk-koeln.de

Always discuss trial participation with your own doctor first.

Locations (1)

Department II of Internal Medicine,University of CologneCologne, GermanyRecruiting

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Source record: clinicaltrials.gov/study/NCT06408077