During a routine appointment, a patient with a history of seizures is found to have a phenytoin level of 23 mcg/mL. What concern will the nurse have, if any?
The drug level is at a toxic level, and the dosage needs to be reduced.
The patient's seizures should be under control if she is also taking a second antiepileptic drug.
The patient is at risk for seizures because the drug level is not at a therapeutic level.
The patient's seizures should be under control because this is a therapeutic drug level.
The Correct Answer is A
A. The drug level is at a toxic level, and the dosage needs to be reduced. Phenytoin has a narrow therapeutic range, and levels above 20 mcg/mL are considered to be in the toxic range.
Symptoms of phenytoin toxicity can include nystagmus, ataxia, slurred speech, and confusion. Therefore, if a patient's phenytoin level is 23 mcg/mL, the nurse should be concerned about potential toxicity and consult with the healthcare provider to adjust the dosage.
B. The patient's seizures should be under control if she is also taking a second antiepileptic drug.
While combination therapy with multiple antiepileptic drugs can help control seizures, a phenytoin level of 23 mcg/mL is still concerning for toxicity and requires intervention.
C. The patient is at risk for seizures because the drug level is not at a therapeutic level. A phenytoin level of 23 mcg/mL is actually above the therapeutic range and is more indicative of toxicity rather than subtherapeutic levels.
D. The patient's seizures should be under control because this is a therapeutic drug level. A phenytoin level of 23 mcg/mL is not within the therapeutic range but rather in the toxic range, so the patient may experience symptoms of toxicity rather than having adequate seizure control.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Fever: Fever is not a common adverse effect of haloperidol.
B. Intractable hiccups: While hiccups can occur as a side effect of some medications, they are not a commonly reported adverse effect of haloperidol.
C. Excessive salivation: Excessive salivation is not a typical adverse effect of haloperidol.
D. Extrapyramidal symptoms: Haloperidol, as a first-generation antipsychotic, is known to cause extrapyramidal symptoms such as dystonia, akathisia, parkinsonism, and tardive dyskinesia. Monitoring for these adverse effects is essential during treatment with haloperidol.
Correct Answer is ["15"]
Explanation
Given:
Amantadine syrup concentration: 50 mg/5 mL Desired dose of amantadine: 150 mg
5ml contains 50mg
1ml contains 50/5= 10mg Given 10mg is in 1ml
Then 150mg will be contained in: 150/10
=15ml
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