The client's serum sodium level is 128 mEq/L and serum potassium level is 2.8 mEq/L. Which hormonal problem is most likely to have caused this clinical situation?
A. Increased aldosterone secretion
B. Decreased aldosterone secretion
C. Increased ADH secretion
D. Decreased ADH secretion
C
Both increased ADH and decreased aldosterone secretion could result in the low serum sodium level. Decreased aldosterone secretion leads to excessive loss of sodium and water while in-creasing potassium reabsorption. If decreased aldosterone levels were responsible, the low serum sodium level would be accompanied by a normal or higher than normal level of serum potassium. ADH secretion causes increased reabsorption of water only. Its excessive secretion causes a dilutional effect on all serum electrolytes, which is consistent with this client's laboratory values.
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Fill in the blank(s) with correct word
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