A patient taking antipsychotic medication develops extrapyramidal symptoms (EPS). What should be the manageme… - NORCET 9 Mains - 2025

NORCET 9 Mains - 2025

Pharmacology

Medium

Appeared in: NORCET 9 Mains - 2025

Explanation

Extrapyramidal symptoms (EPS) are a common side effect of antipsychotic medications, particularly first-generation (typical) antipsychotics.
These symptoms arise from the blockade of dopamine D2 receptors in the nigrostriatal pathway, which disrupts the normal balance between dopamine (inhibitory) and acetylcholine (excitatory).
This imbalance results in a relative excess of cholinergic activity, leading to various movement disorders.
Adding an anticholinergic agent, such as trihexyphenidyl or benztropine, is the primary management strategy for acute dystonia and drug-induced parkinsonism.
These drugs work by blocking muscarinic acetylcholine receptors, which helps to re-establish the dopaminergic-cholinergic balance and alleviate the motor symptoms.

Option A: Increasing the dose of the antipsychotic medication would increase the blockade of dopamine receptors, which is the underlying cause of EPS. This action would therefore worsen the symptoms, not alleviate them.
Option B: While reducing the dose of the antipsychotic can lessen EPS, it is not the first-line intervention for acute symptoms like dystonia. It also carries the significant risk of the patient's primary psychotic illness relapsing.
Option D: Abruptly stopping the antipsychotic is not necessary for most cases of EPS and can lead to a severe relapse of psychosis. This action is reserved for more severe, life-threatening adverse reactions.

Visual 1: Table: A summary table comparing the four main types of EPS (Acute Dystonia, Akathisia, Parkinsonism, Tardive Dyskinesia), including their typical onset, key symptoms, and first-line management strategies.
Visual 2: Flowchart: A decision-making flowchart for a nurse who identifies a patient with potential EPS, guiding them through assessment (e.g., using AIMS, BARS scales), identifying the type of EPS, and anticipating the correct pharmacological intervention.

Clinical Relevance

Nursing practice connection: Use the key finding related to Management of Extrapyramidal Symptoms (EPS) to guide bedside assessment, documentation, and the next nursing action.
A nurse's primary role is the early recognition of EPS. Using standardized assessment tools like the Abnormal Involuntary Movement Scale (AIMS) for tardive dyskinesia or the Barnes Akathisia Rating Scale (BARS) is crucial for objective monitoring.
When administering anticholinergic medications like benztropine or trihexyphenidyl, the nurse must monitor for common side effects such as dry mouth, blurred vision, constipation, and urinary retention, and provide comfort measures.
Patient safety is a priority. Patients with parkinsonism are at a higher risk for falls due to shuffling gait and postural instability. The nurse should implement fall precautions.

How to Approach the Question

First, identify the core clinical problem presented in the question: a patient on antipsychotics has developed extrapyramidal symptoms (EPS).
Recall the basic pathophysiology of EPS: it's caused by a dopamine-acetylcholine imbalance from the medication.
Evaluate each option based on this pathophysiology. Ask yourself: 'How will this action affect the dopamine-acetylcholine balance?'
Option A (Increase dose): This will block more dopamine, worsening the imbalance. Eliminate this.
Option B (Decrease dose): This will reduce dopamine blockade, which could help, but may not be the fastest or most effective solution for acute symptoms and risks psychosis relapse. Keep it as a possibility but look for a better answer.
Option C (Add anticholinergic): This directly counteracts the excess acetylcholine, addressing the core imbalance. This is a strong candidate.

Concept Tested & Keywords

Concept Tested: Management of Extrapyramidal Symptoms (EPS)
Stem keywords: antipsychotic medication, extrapyramidal symptoms (EPS), management
Lead-in keywords: What should be

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