What is the typical volume status of a patient with SIADH?

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Multiple Choice

What is the typical volume status of a patient with SIADH?

Explanation:
In SIADH, excess ADH causes water retention that dilutes serum sodium, but the body adapts by increasing renal sodium excretion, so the extracellular fluid volume remains normal. Clinically this presents as euvolemia: normal blood pressure, no edema, and no signs of dehydration. Therefore, the typical volume status is euvolemic. If you saw signs of dehydration or low blood volume, that would suggest hypovolemia; edema or fluid overload would point to hypervolemia, which is not typical for SIADH.

In SIADH, excess ADH causes water retention that dilutes serum sodium, but the body adapts by increasing renal sodium excretion, so the extracellular fluid volume remains normal. Clinically this presents as euvolemia: normal blood pressure, no edema, and no signs of dehydration. Therefore, the typical volume status is euvolemic. If you saw signs of dehydration or low blood volume, that would suggest hypovolemia; edema or fluid overload would point to hypervolemia, which is not typical for SIADH.

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