DS AUTH FOR DEXA HOPKINS MEDICARE ADVANTAGE PLAN (1285) NEEDS Au a Search e sias

Question

DS AUTH FOR DEXA HOPKINS MEDICARE ADVANTAGE PLAN (1285) NEEDS Au a Search e siassessment talele eh tsp?course-assessment--74513_1&curse;,30704-1 cort escription Instructions Multiple Attempts Not allowed. This test can only be taken once. Force Completion This test can be saved and resumed later Question Completion Status: QUESTION 1 1. Plasma and urine osmolality values in a patient are 295 and 100 mOsm/L, respectively The urinary excretion of aquaporin-2 is very low but increases substantially in response to exogenous administration of antidiuretic hormone (ADH) The most likely diagnosis for this patient is which of the following? A. Neurogenic Diabetes Insipidus B. Nephrogenic diabetes insipidus C. Syndrome of mappropriate ADH secretion, hypothalamic D Syndrome of nappropriate ADH secretion by an ectopic tumor E The patient is normal. re.

Explanation / Answer

1) Urinary osmolarity of less than 200 mOsm/liter suggests diabetes insipidus. Here, the plasma and urinary osmolarity are 295 and 100 mOsm/L respectively. Further, urinary excretion of aquaporin2 is low but increased on ADH administration. This shows that the collecting duct responds well to ADH. Therefore, the patient might be suffering from neurogenic diabetes insipidus. (option A).

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