An antipsychotic agent, fluphenazine (Prolixin), is ordered for a patient with psychosis. The nurse understands that this agent can lead to extrapyramidal symptoms that may be treated with which medication?
quetiapine (Seroquel)
aripiprazole (Abilify)
benztropine (Cogentin)
chlorpromazine (Thorazine)
The Correct Answer is C
Fluphenazine (Prolixin) is a first-generation (typical) antipsychotic commonly prescribed for schizophrenia and other psychotic disorders. These drugs are effective at controlling positive psychotic symptoms such as hallucinations and delusions, but they carry a significant risk of extrapyramidal symptoms (EPS) due to potent dopamine D2 receptor blockade in the nigrostriatal pathway.
Rationale for correct answer:
C. Benztropine (Cogentin) – Benztropine is an anticholinergic agent used specifically to treat EPS, including acute dystonia, parkinsonism, and akathisia. By restoring the balance between acetylcholine and dopamine in the CNS, it alleviates involuntary movements and muscle rigidity caused by dopamine blockade. Administering benztropine promptly can prevent progression of symptoms and reduce patient distress.
Rationale for incorrect answer:
A. Quetiapine (Seroquel) – This atypical antipsychotic has a lower risk of EPS and is not used to treat EPS caused by other antipsychotics. It primarily targets positive and negative symptoms of psychosis without reversing motor side effects.
B. Aripiprazole (Abilify) – Another second-generation antipsychotic, aripiprazole is not indicated for managing EPS. Its mechanism is a partial dopamine agonist, which does not reverse EPS caused by dopamine antagonists.
D. Chlorpromazine (Thorazine) – This is a typical antipsychotic that can also cause EPS. Using it would worsen extrapyramidal symptoms, making it inappropriate for treatment.
Take-home points:
- Benztropine is first-line therapy for EPS caused by typical antipsychotics.
- Early identification of EPS is crucial to prevent falls, injury, and medication nonadherence.
- Nurses should educate patients and caregivers to report involuntary movements promptly and monitor for both acute and long-term side effects.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Many antipsychotic medications, such as fluphenazine, have anticholinergic side effects due to their blockade of muscarinic receptors. These effects—dry mouth, blurred vision, constipation, and urinary retention—can significantly impact comfort and adherence. Nurses play a key role in teaching clients self-care strategies to reduce these symptoms and maintain compliance with therapy.
Rationale for correct answer:
B. Chew sugarless gum to moisten the mouth – Dry mouth is a common anticholinergic effect of fluphenazine. Chewing sugarless gum stimulates salivary flow, helping to moisten the oral mucosa and prevent dental problems. This is an effective, nonpharmacologic coping strategy.
Rationale for incorrect answer:
A. Take the medication in the morning to prevent insomnia – Fluphenazine is more likely to cause sedation than insomnia. Adjusting the time of administration does not address anticholinergic effects such as dry mouth.
C. Use cooling measures to decrease fever – While anticholinergic drugs can reduce sweating and theoretically contribute to heat intolerance, fever is not the most common issue. Cooling measures are not a primary intervention for typical anticholinergic effects in this context.
D. Take an antacid to relieve nausea – Antacids are not indicated for anticholinergic effects. In addition, they can interfere with the absorption of some oral medications, including certain antipsychotics.
Take-home points:
- Anticholinergic effects of fluphenazine include dry mouth, constipation, urinary retention, and blurred vision.
- Nonpharmacologic interventions, such as chewing sugarless gum or sipping water, can improve comfort and adherence.
- Client education should focus on practical, daily strategies to manage side effects without introducing unnecessary medications.
Correct Answer is B
Explanation
Phenothiazines, a class of first-generation antipsychotics, can cause acute dystonia early in treatment. This is a type of extrapyramidal symptom (EPS) characterized by severe, involuntary muscle spasms that may affect the neck, face, tongue, or back, and require prompt medical attention.
Rationale for correct answer:
B. Severe muscle spasms may occur early in therapy.
Acute dystonic reactions are a known early adverse effect, often appearing within hours to days of starting phenothiazines. Education should stress reporting these symptoms immediately, as they can compromise breathing or swallowing.
Rationale for incorrect answer:
A. The client may experience withdrawal and slowed activity.
Phenothiazines more commonly cause sedation, not withdrawal-like symptoms, and this is not the most urgent teaching point before discharge.
C. Tardive dyskinesia is likely early in therapy.
Tardive dyskinesia usually develops after months to years of therapy, not in the early stages.
D. Medications should be taken as prescribed to prevent adverse effects.
While adherence is important, this statement does not address a specific high-priority side effect for early treatment.
Take-home points:
- Acute dystonia can occur within the first days of phenothiazine use.
- Early recognition and reporting of muscle spasms is critical to prevent complications.
- Tardive dyskinesia develops later, not at the start of therapy.
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