A member asked:

In euvolemic hyponatremia, is water drawn out of blood into the cells? would this make your rbc, hemoglobin and hematocrit become elevated even though you drink plenty of water?

2 doctors weighed in across 2 answers
Dr. Hiep Le answered

Specializes in Nephrology and Dialysis

Euvolemic means unchanged or same volume then Hb and Hct are usually unchanged. In euvolemic hyponatremia, the sodium is low because the water portion is higher in the serum compared with sodium (natrium or Na). In reality, the volume is slightly high but sodium is normal. That's why the first treatment for this condition is limiting free water intake but not increasing sodium or salt intake.

Answered Jul 4, 2023

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Dr. Birendra Tandan answered

Specializes in Urology

No. Hyponatremia is low sodium in blood and unrelated to RBC & hGB, There are many causes which have to be evaluated and treated accordingly. Your co-relation and reasoning are incorrect

Answered Jul 5, 2023

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