Which sign, when exhibited by a hospitalized child, should the nurse recognize as a characteristic of diabetes insipidus?
a. Weight gain
b. Increased urine specific gravity
c. Increased urination
d. Serum sodium level of 130 mEq/L
C
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A Weight gain results from retention of water when there is an excessive
production of antidiuretic hormone; in diabetes insipidus there is a decreased
production of antidiuretic hormone.
B Concentrated urine is a sign of the syndrome of inappropriate antidiuretic
hormone (SIADH), in which there is an excessive production of antidiuretic
hormone.
C The deficiency of antidiuretic hormone associated with diabetes insipidus causes
the body to excrete large volumes of dilute urine.
D A deficiency of antidiuretic hormone, as with diabetes insipidus, results in an
increased serum sodium concentration (greater than 145 mEq/L).
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