Difficulty: Medium
Average Score: 88%
Simulated
The patient with tuberculosis is now on isoniazid (INH). Which laboratory test should the nurse monitor?
Correct answer
BUN, PT/PTT, and CBC aren't specific to INH. Liver enzymes are monitored due to INH's hepatotoxicity risk.
Rationale
The correct answer is C. The nurse should monitor liver enzymes (LFTs) in a patient on isoniazid (INH) due to the risk of hepatotoxicity associated with this medication. 1. Isoniazid is known to cause liver damage in some patients. 2. Monitoring liver enzymes can help detect any liver dysfunction early. 3. LFTs include tests such as ALT, AST, and bilirubin, which can indicate liver damage. 4. Regular monitoring of LFTs is essential to ensure the safe use of INH. Incorrect choices: A. BUN is not specific to INH. B. PT and PTT are not directly related to INH use. D. CBC is not specifically required for monitoring INH therapy.