Which scale is used to measure OCD?

Appeared in: NORCET 3 - 2022 (Shift-2)

Explanation

NIMH-GOCS stands for the National Institute of Mental Health-Global Obsessive-Compulsive Scale.
It is a clinician-rated tool specifically designed to provide a global assessment of the severity of Obsessive-Compulsive Disorder (OCD).
This scale evaluates the overall impact of OCD on a patient's life, rather than detailing specific symptoms.
While the Yale-Brown Obsessive Compulsive Scale (Y-BOCS) is the gold standard for detailed symptom assessment, NIMH-GOCS is a valid tool for measuring overall severity.

Option B: HRSD, or the Hamilton Rating Scale for Depression (HAM-D), is a tool specifically designed to quantify the severity of symptoms in patients with depression.
Option C: PANSS, the Positive and Negative Syndrome Scale, is used to assess the symptom dimensions of schizophrenia (positive, negative, and general psychopathology).
Option D: BPRS, the Brief Psychiatric Rating Scale, is a broad-measure tool that assesses a wide range of general psychiatric symptoms but is not specific to OCD. It is often used in research and clinical settings to track changes in psychosis and other severe mental illnesses.

Visual 1: Chart: A comparative chart showing different psychiatric rating scales, the disorders they measure (e.g., OCD, Depression, Schizophrenia), and what they assess (e.g., symptom severity, global functioning).

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Psychiatric rating scales for Obsessive-Compulsive Disorder (OCD) as background academic context rather than a clinical decision trigger.
Using the correct, validated rating scale is crucial for accurate diagnosis, treatment planning, and monitoring a patient's response to therapy (like SSRIs or Exposure and Response Prevention).
A nurse's accurate application and recording of these scales provide objective data that guides the entire healthcare team's decisions.
What if the patient has OCD with comorbid depression? The clinician might use both the Y-BOCS/NIMH-GOCS for OCD and the HRSD for depression to track the progress of both conditions independently.

How to Approach the Question

First, identify the core concept in the question, which is finding a measurement tool for a specific disorder: 'OCD'.
Next, recall or deduce the primary purpose of each scale listed in the options.
Mentally associate 'OCD' with its specific scales, such as Y-BOCS or NIMH-GOCS.
Eliminate the options that are clearly for other disorders: HRSD for depression, PANSS for schizophrenia.
Differentiate between the specific OCD scale (NIMH-GOCS) and the general psychiatric scale (BPRS), choosing the most specific and appropriate tool for the disorder mentioned.

Concept Tested & Keywords

Concept Tested: Psychiatric rating scales for Obsessive-Compulsive Disorder (OCD)
Stem keywords: scale, measure, OCD
Lead-in keywords: Which

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