Which of the following drugs elevates nitrogen levels and would make it necessary for a health care provider to assess the baseline serum blood urea nitrogen (BUN) and creatinine levels of the patient?
a. Arginine hydrochloride
b. Ammonium hydrochloride
c. Ascorbic acid
d. Hydrochloric acid
ANS: A
BUN and creatinine measurements should be taken before arginine hydrochloride is used, be-cause the drug contains large amounts of metabolizable nitrogen, which causes a temporary ele-vation in nitrogen levels.
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