Endocrinology MCQ Answer 038

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Understanding Hyponatremia (Educational Use)The correct answer is C. Low plasma osmolality, dilutional hyponatremia, high urine osmolality

Syndrome of inappropriate ADH secretion:
-ADH excess à excessive amounts of free water resorbed
-most common causes include secretion of ectopic ADH by malignant neoplasms, non-neoplastic
diseases of the lung, and local injury to they hypothalamus
Clinical manifestations:
-hyponatremia, cerebral edema, neurologic dysfunction
-total body water is increased, blood volume remains normal & peripheral edema doesn’t develop

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