Hyponatremia Clinical Trial
Official title:
Colloid Osmotic Pressure and Osmolality in Hyponatremia. Additional Diagnostic Aspects and Guide to Treatment
Hyponatremia (serum sodium of less than 135 mmol/L)is a very common electrolyte disorder. The
reasons for the disorder varies as well as if it is acute or chronic.
In this study we wish to follow changes in colloid osmotic pressure and osmolality during the
initial treatment hours. We also wish to use mass balance for the calculation of body
compartments and to detect fluid translocation between these.
Patients with hyponatremia arriving att the intensive care unit are asked to participate in
the study. The first blood samples are collected before initializing the treatment as well as
measurements of body compartments with a bioimpedance analyzer. Collected blood samples are
electrolytes (Sodium, Potassium and Chloride), colloid osmotic pressure, osmolality and
hemoglobin. These samples are repeated at 4 and 8 hours after start of the study. Amount of
infused fluid as well as electrolytes are recorded. Urine volume is measured and urine
samples are analyzed for the loss of electrolytes.
Additional samples for guidance of treatment are collected every hour.
Hopefully the addition of colloid osmotic pressure, osmolality and mass balance can be
beneficial in the diagnosis of the reason for the disorder as well as for the treatment.
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