When assessing a patient for adverse reactions to the combination of isoniazid and rifampin (Rifadin), the nurse would monitor which laboratory results?
a. Liver function tests (LFTs)
b. Complete blood cell count (CBC)
c. Uric acid levels
d. Calcium levels
ANS: A
The nurse should monitor LFTs and creatinine clearance, because isoniazid and rifampin are hepatotoxic, and the chances of hepatotoxicity are increased when the two are given together.
Nothing indicates a need to monitor a CBC, uric acid levels, or calcium levels.
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