Which diagnostic test is commonly used to confirm the diagnosis of diabetes insipidus (DI) and distinguish between central and nephrogenic DI?
Blood glucose test.
Serum electrolyte panel.
Urine osmolality.
Water deprivation test.
The Correct Answer is D
The water deprivation test is commonly used to diagnose diabetes insipidus and differentiate between central and nephrogenic DI. During this test, the client is deprived of fluids while their urine output and concentration are monitored.
Incorrect choices:
a. This choice is incorrect. Blood glucose testing is used to diagnose diabetes mellitus, not diabetes insipidus.
b. This choice is incorrect. A serum electrolyte panel may provide information about electrolyte imbalances, but it is not the primary diagnostic test for diabetes insipidus.
c. This choice is incorrect. Urine osmolality may be measured as part of the diagnostic evaluation for diabetes insipidus, but it is not the primary diagnostic test.
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Related Questions
Correct Answer is B
Explanation
A serum electrolyte panel measures the concentration of various electrolytes in the blood and can reveal abnormalities related to fluid and electrolyte balance, which may be present in diabetes insipidus.
Incorrect choices:
a. This choice is incorrect. The glucose tolerance test is used to diagnose diabetes mellitus, not diabetes insipidus.
c. This choice is incorrect. The water deprivation test is used to diagnose diabetes insipidus and assess the ability of the kidneys to concentrate urine.
d. This choice is incorrect. The desmopressin stimulation test involves administering synthetic ADH to differentiate between central and nephrogenic diabetes insipidus.
Correct Answer is A
Explanation
Desmopressin (DDAVP) is typically taken orally with a full glass of water to ensure proper absorption and effectiveness. It is important to maintain adequate hydration.
Incorrect choices:
b. This choice is incorrect. Desmopressin is commonly administered orally, intranasally, or subcutaneously, but not via intramuscular injection.
c. This choice is incorrect. Monitoring blood glucose levels is important for clients with diabetes mellitus, not diabetes insipidus.
d. This choice is incorrect. There is no specific indication to limit dietary fiber intake for clients with diabetes insipidus.
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