A nurse is reinforcing teaching a client who has a new prescription for phenytoin. The nurse should instruct the client to monitor and report which of the following adverse effects of this medication?
Diarrhea
Wrist pain
Skin rash
Metallic taste
The Correct Answer is C
A. Diarrhea:
Diarrhea is not a common side effect of phenytoin. While gastrointestinal disturbances such as nausea, vomiting, and constipation may occur, diarrhea is less common. Therefore, it is not a primary adverse effect that the nurse should instruct the client to monitor and report.
B. Wrist pain:
Wrist pain is not a common side effect of phenytoin. Side effects related to musculoskeletal issues such as joint pain, muscle weakness, or muscle twitching can occur, but wrist pain specifically is not commonly associated with phenytoin use. Therefore, it is not a primary adverse effect that the nurse should instruct the client to monitor and report.
C. Skin rash:
Skin rash is a potential adverse effect of phenytoin that should be monitored and reported. Phenytoin can cause various skin reactions, including a mild rash or more severe reactions such as Stevens-Johnson syndrome or toxic epidermal necrolysis. Therefore, the nurse should instruct the client to promptly report any signs of skin rash or other skin changes.
D. Metallic taste:
Metallic taste is a common side effect of phenytoin. While it is not usually a serious adverse effect, it can be bothersome for some individuals. Therefore, the nurse should instruct the client to monitor for this side effect and report it if it occurs persistently or becomes bothersome.

Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Nystagmus:
Nystagmus is an involuntary, rhythmic movement of the eyes, which can be rapid and jerky. It is a common neurological manifestation of phenytoin toxicity. Patients experiencing phenytoin toxicity may exhibit horizontal or vertical nystagmus, which can be detected upon physical examination.
B. Strabismus:
Strabismus, also known as crossed eyes or squint, refers to a misalignment of the eyes. While strabismus can have various causes, it is not typically associated with phenytoin toxicity. Therefore, it is less likely to indicate phenytoin toxicity compared to nystagmus.
C. Blurry vision:
Blurry vision, or visual disturbances, can occur in patients experiencing phenytoin toxicity. However, it is a non-specific symptom and can be observed in various other conditions as well. Patients with phenytoin toxicity may experience blurry vision, double vision (diplopia), or other visual disturbances due to the effects of the medication on the central nervous system.
D. Amblyopia:
Amblyopia, also known as lazy eye, is a condition characterized by reduced vision in one or both eyes. It is typically associated with visual development during childhood and is not directly related to phenytoin toxicity. Therefore, it is less likely to indicate phenytoin toxicity compared to nystagmus or other neurological manifestations.
Correct Answer is C
Explanation
A. Hyperglycemia:
Hyperglycemia refers to high blood sugar levels. While certain medications can affect glucose metabolism and potentially lead to hyperglycemia as a side effect, this is not typically associated with hydantoin therapy for seizure disorder. Therefore, it is less likely for the patient to experience hyperglycemia as a direct result of taking hydantoin medication.
B. Hunger:
Hunger is not a common side effect of hydantoin therapy for seizure disorder. While some medications may affect appetite or cause changes in eating habits, hunger is not a typical side effect of hydantoin medications such as phenytoin.
C. Hypoglycemia:
Hypoglycemia refers to low blood sugar levels, which can lead to symptoms such as confusion, dizziness, sweating, and weakness. Hydantoin medications, particularly phenytoin, can affect glucose metabolism and increase the risk of hypoglycemia, especially in patients who already have diabetes or are prone to low blood sugar. Therefore, it is important for patients taking hydantoin therapy to monitor their blood sugar levels regularly and be aware of the signs and symptoms of hypoglycemia.
D. Pupil dilation:
Pupil dilation, or mydriasis, is not a common side effect of hydantoin therapy for seizure disorder. While certain medications may affect pupil size, this is not typically associated with hydantoin medications such as phenytoin.
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