Neuroleptic malignant syndrome is suspected in a client who is prescribed an atypical antipsychotic medication. Which medication should the nurse prepare in anticipation of being prescribed to treat this adverse effect related to the use of this medication?

1. A

   Bromocriptine

2. B

   Protamine sulfate

3. C

   Enalapril maleate

4. D

   Paracetamol

Appeared in: NORCET 5 Prelims - Sept 2023 (Shift-2)

Explanation

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• Neuroleptic Malignant Syndrome (NMS) is a life-threatening emergency caused by a severe blockade of dopamine D2 receptors from antipsychotic medications.
• The core features are hyperthermia, severe muscle rigidity ('lead-pipe' rigidity), autonomic instability, and altered mental status.
• Bromocriptine is a dopamine agonist, meaning it stimulates dopamine receptors in the brain.
• This action directly counteracts the underlying pathophysiology of NMS by restoring dopaminergic tone, making it a primary treatment for the condition.

Why Other Options Were Wrong

• Option B: Protamine sulfate is an antidote used exclusively to reverse the effects of heparin, an anticoagulant. It has no pharmacological action related to dopamine or muscle function.
• Option C: Enalapril is an ACE inhibitor used to treat high blood pressure. While NMS involves autonomic instability that can affect blood pressure, this drug does not treat the underlying cause of the syndrome.
• Option D: Paracetamol is an antipyretic that works on the hypothalamus to reduce fever caused by inflammatory processes. The hyperthermia in NMS is due to central dopaminergic dysregulation, not inflammation, rendering paracetamol ineffective.

Related Visual

• Visual 1: Flowchart: Management of Neuroleptic Malignant Syndrome. This visual would outline the critical steps: 1. Stop the offending antipsychotic agent. 2. Initiate supportive care (cooling, hydration). 3. Administer specific pharmacological agents like Bromocriptine or Dantrolene. 4. Monitor vital signs and lab values (CK, WBC).

Clinical Relevance

• Nursing practice connection: Use the key finding related to Pharmacological management of Neuroleptic Malignant Syndrome (NMS) to guide bedside assessment, documentation, and the next nursing action.
• Early recognition of NMS symptoms and immediate intervention are critical nursing responsibilities that can prevent mortality, which can be as high as 10-20%.
• The first and most important nursing action is to hold the antipsychotic medication and notify the prescribing provider immediately when NMS is suspected.
• Supportive care is a cornerstone of NMS management. This includes external cooling measures (cooling blankets), maintaining hydration with IV fluids, and continuous monitoring of vital signs and urine output.

How to Approach the Question

• First, identify the key clinical condition in the question: 'Neuroleptic malignant syndrome' is presented as an adverse effect of an 'atypical antipsychotic'.
• Second, recall the core pathophysiology of NMS, which is a drastic reduction in dopamine activity in the central nervous system caused by the medication.
• Third, analyze the options based on their mechanism of action. The goal is to find a drug that reverses or counteracts the dopamine blockade.
• Evaluate Bromocriptine: Recognize it as a dopamine agonist. This mechanism directly opposes the pathophysiology of NMS, making it a logical treatment.
• Eliminate the other options by identifying their primary, unrelated uses: Protamine sulfate (heparin reversal), Enalapril (antihypertensive), and Paracetamol (standard fever/pain relief).

Concept Tested & Keywords

• Concept Tested: Pharmacological management of Neuroleptic Malignant Syndrome (NMS)
• Stem keywords: Neuroleptic malignant syndrome, atypical antipsychotic, adverse effect
• Lead-in keywords: prepare, anticipation, treat
• Negative lead-in flag: false

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QsWPyMrwUygGPf-3DSIQHH

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