A psychiatry patient comes in the OPD with history of obsession or unwanted thoughts these force him to engage in repetitive cleaning and hygiene rituals, often include excessive hand washing. What is the drug of choice for the patient?

1. A

   Fluoxetine

2. B

   Bupropion

3. C

   Venlafaxine

4. D

   Haloperidol

Appeared in: NORCET 8 Prelims-2025

Explanation

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• Fluoxetine is a Selective Serotonin Reuptake Inhibitor (SSRI), which is the first-line drug class for treating Obsessive-Compulsive Disorder (OCD).
• OCD is strongly linked to dysregulation of the serotonin system in the brain. SSRIs work by increasing the amount of available serotonin, which helps reduce the intensity of obsessions and compulsions.
• Clinical guidelines recommend SSRIs as the initial pharmacological approach due to their proven efficacy and better tolerability compared to older medications.
• Higher doses of SSRIs are often required to effectively treat OCD compared to the doses used for depression.

Why Other Options Were Wrong

• Option B: Bupropion is a Norepinephrine-Dopamine Reuptake Inhibitor (NDRI). It does not significantly affect the serotonin pathways implicated in OCD and is generally considered ineffective for this condition. It can sometimes increase anxiety.
• Option C: Venlafaxine is a Serotonin-Norepinephrine Reuptake Inhibitor (SNRI). While it has some serotonergic activity, it is typically considered a second-line or third-line treatment for OCD, to be used only after trials of one or more SSRIs have failed.
• Option D: Haloperidol is a typical antipsychotic. It is not a first-line monotherapy for OCD. Its role is limited to being an adjunctive (add-on) agent for severe, treatment-refractory OCD, particularly when there is a comorbid tic disorder.

Related Visual

• Visual 1: Diagram: A diagram of a neural synapse illustrating how an SSRI like Fluoxetine blocks the reuptake pump for serotonin, increasing its concentration in the synaptic cleft.
• Visual 2: Flowchart: A treatment algorithm for OCD, showing SSRIs as the first-line pharmacological step, followed by other SSRIs or clomipramine, and then augmentation strategies.
• Visual 3: Infographic: An infographic summarizing the common symptoms of OCD, including contamination obsessions and cleaning compulsions.

Clinical Relevance

• Nursing practice connection: Use the key finding related to Pharmacological treatment for Obsessive-Compulsive Disorder (OCD) to guide bedside assessment, documentation, and the next nursing action.
• A key nursing role is educating the patient that SSRIs can take a long time (8-12 weeks) to show full effects for OCD, and that higher doses are often needed. This manages expectations and improves adherence.
• Nurses must assess and monitor the physical consequences of OCD, such as dermatitis or skin breakdown from excessive hand washing, and provide interventions like recommending moisturizers and barrier creams.
• What if? If this patient had a comorbid tic disorder and had failed two SSRI trials, the next step might be to augment the SSRI with an antipsychotic like risperidone or aripiprazole, rather than switching to another drug class immediately.

How to Approach the Question

• First, analyze the clinical vignette to identify the patient's key symptoms: 'obsession or unwanted thoughts' and 'repetitive cleaning and hygiene rituals.'
• Recognize these symptoms as the classic presentation of Obsessive-Compulsive Disorder (OCD).
• The question asks for the 'drug of choice.' This requires recalling the first-line pharmacological treatment for the diagnosed condition.
• Access your knowledge of psychopharmacology. Recall that Selective Serotonin Reuptake Inhibitors (SSRIs) are the first-line treatment for OCD.
• Evaluate the options provided. Identify which of the drugs is an SSRI. Fluoxetine is a well-known SSRI.
• Eliminate the other options by identifying their drug class and primary indications: Bupropion (NDRI for depression), Venlafaxine (SNRI, second-line for OCD), and Haloperidol (antipsychotic, adjunctive for OCD).

Concept Tested & Keywords

• Concept Tested: Pharmacological treatment for Obsessive-Compulsive Disorder (OCD)
• Stem keywords: psychiatry patient, obsession, unwanted thoughts, repetitive cleaning, excessive hand washing
• Lead-in keywords: drug of choice
• Clinical cues: The combination of obsessions (unwanted thoughts) and compulsions (repetitive rituals) points directly to a diagnosis of OCD.

Question ID

QXy9o_exJC77IV8W-nE90n

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