The nurse knows that the best test to differentiate between central and nephrogenic DI is
A) the water deprivation test.
B) serum osmolality.
C) computed tomography scan.
D) the ADH test.

Question

Quizplus · Accepted Answer

The antidiuretic hormone test is used to differentiate between neurogenic diabetes insipidus (DI)(central)and nephrogenic (kidney)DI.In severe central DI, in which the pituitary is affected, the urine osmolality shows a significant increase (becomes more concentrated), which indicates that the cell receptor sites on the kidney tubules are responsive to vasopressin.Test results in which urine osmolality remains unchanged indicate nephrogenic DI, suggesting kidney dysfunction because the kidneys are no longer responsive to ADH.

The Nurse Knows That the Best Test to Differentiate Between