A nurse is monitoring a patient for extrapyramidal symptoms. What medication strategy is essential to reduce the likelihood of these symptoms?
Switch to atypical antipsychotics
Add more typical antipsychotics
Focus on therapeutic blood levels
Increase the dose of typical antipsychotics
The Correct Answer is A
Choice A reason: Atypical, or second-generation, antipsychotics have a lower affinity for D2 receptors in the nigrostriatal pathway and a higher affinity for serotonin receptors. This pharmacological profile significantly reduces the risk of extrapyramidal symptoms (EPS) compared to first-generation medications, making them the preferred strategy for patients prone to motor side effects.
Choice B reason: Adding more typical antipsychotics would exacerbate the blockade of dopamine receptors in the basal ganglia. Typical antipsychotics are the primary causative agents of EPS, and increasing the total burden of these medications would worsen muscle rigidity, tremors, and the risk of developing irreversible tardive dyskinesia for the patient.
Choice C reason: While monitoring blood levels is important for some psychiatric medications like lithium or clozapine, most typical antipsychotics do not have a well-defined "therapeutic window" for blood levels that prevents EPS. The occurrence of EPS is more closely tied to receptor occupancy percentages than to simple systemic serum concentrations.
Choice D reason: Increasing the dose of typical antipsychotics directly increases the occupancy of D2 receptors in the striatum. When occupancy exceeds 80%, the likelihood of EPS rises dramatically. Therefore, increasing the dose is the opposite of the required clinical strategy to manage or prevent the development of movement disorders.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: Involuntary lip-smacking and facial grimacing are classic signs of tardive dyskinesia, not pseudoparkinsonism. These symptoms result from dopamine receptor supersensitivity in the nigrostriatal pathway after prolonged blockade and are often irreversible, unlike the symptoms associated with drug-induced parkinsonism.
Choice B reason: Acute muscle spasms, particularly those that result in abnormal posturing of the head or trunk, indicate acute dystonia. This is a rapid-onset extrapyramidal reaction that requires immediate intervention with anticholinergic medications like benztropine, whereas pseudoparkinsonism involves more generalized rigidity and slow movement patterns.
Choice C reason: The subjective and objective need to move, or the inability to remain seated, defines akathisia. While both are extrapyramidal symptoms caused by dopamine blockade, akathisia is a disorder of movement urgency, whereas pseudoparkinsonism mimics the motor deficits of idiopathic Parkinson’s disease.
Choice D reason: Pseudoparkinsonism is characterized by a constellation of symptoms including "lead-pipe" muscle stiffness, a shuffling gait with a narrowed base, and a mask-like facial expression. These symptoms are caused by the blockade of dopamine D2 receptors in the basal ganglia by antipsychotic medications.
Correct Answer is B
Explanation
Choice A reason: Social anxiety disorder focuses specifically on the fear of being scrutinized, judged, or embarrassed by others in social or performance-related situations. While it may lead to staying at home, the core fear is social evaluation rather than the logistical inability to escape a specific physical environment or situation.
Choice B reason: Agoraphobia is characterized by marked fear or anxiety about being in situations where escape might be difficult or help might not be available in the event of developing panic-like symptoms. This often leads to "homebound" behavior, where the individual feels safe only within their own residence and avoids public spaces or transportation.
Choice C reason: Generalized anxiety disorder (GAD) involves excessive, uncontrollable worry about various aspects of daily life, such as health, finances, or work. While GAD is pervasive and distressing, it is not characterized by the specific situational avoidance or the localized fear of being unable to escape that defines agoraphobia.
Choice D reason: Panic disorder is defined by recurrent, unexpected panic attacks and the persistent worry about having more attacks. While agoraphobia often develops as a complication of panic disorder (as the patient fears having an attack in public), the specific fear of being unable to escape situations is the defining feature of agoraphobia itself.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.
