(PHARM) The nurse instructs a person taking phenytoin (Dilantin) that periodic blood tests will be necessary. The nurse explains that the laboratory checks will monitor for which potential medication-induced change?
Increasing creatinine
Liver damage
Potassium depletion
Increasing sedimentation rates
The Correct Answer is B
A. While creatinine levels are important for kidney function, phenytoin is more commonly associated with hepatic (liver) effects than renal toxicity.
B. Phenytoin is metabolized in the liver and can cause hepatotoxicity. Periodic liver function tests are essential to monitor for potential liver damage.
C. Potassium depletion is not typically associated with phenytoin use. It is more commonly a concern with diuretics or other medications affecting electrolytes.
D. Sedimentation rate is a non-specific marker of inflammation and is not used to monitor phenytoin therapy.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Circulatory congestion of the skin does not directly cause the intense, deep pain associated with osteomyelitis.
B. Osteomyelitis is an infection of the bone, often involving the bone marrow. The buildup of purulent material increases pressure within the rigid bone structure, causing severe pain.
C. While casts can cause discomfort if improperly applied, the primary source of pain in osteomyelitis is the infection itself.
D. Inelastic bone structure may contribute to pressure buildup, but this is secondary to the infection in the bone marrow, which is the direct cause of pain.
Correct Answer is C
Explanation
A. The ulnar nervepasses through Guyon’s canal, not the carpal tunnel.
B. The radial arteryis not involved in the carpal tunnel and is not compressed in CTS.
C. Carpal tunnel syndromeoccurs when the median nerveis compressed within the carpal tunnel, leading to symptoms like pain, tingling, numbness, and weakness, especially in the thumb, index, and middle fingers.
D. The brachial arteryruns higher in the arm and is not affectedby carpal tunnel compression.
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