While assessing the level of consciousness of a patient using Glasgow Coma Scale, which of the following score represents the best motor response from the patient?

Appeared in: AIIMS Patna NO - 2020

Explanation

The Glasgow Coma Scale (GCS) is a standardized tool used to assess a patient's level of consciousness.
It evaluates three key categories: Eye Opening (scored 1-4), Verbal Response (scored 1-5), and Best Motor Response (scored 1-6).
The motor response scale ranges from 1 (no response) to 6 (obeys commands).
A score of 6 indicates the patient can follow verbal commands, which is the highest and therefore the 'best' possible motor response, reflecting optimal cortical function for this parameter.

Option A: A score of 3 on the motor scale represents 'Abnormal flexion' (decorticate posturing). This is a severe neurological sign and is far from the best response.
Option B: A score of 4 indicates 'Withdrawal from pain.' While this is a purposeful response, it is a lower level of function than localizing pain or obeying commands.
Option C: A score of 5 signifies 'Localizes to pain.' This is a good response, indicating the patient can identify the location of a painful stimulus and attempt to remove it, but it is still less optimal than being able to follow a command.

Clinical Relevance

Nursing practice connection: Use the key finding related to Glasgow Coma Scale (GCS) Motor Response Assessment to guide bedside assessment, documentation, and the next nursing action.
Nurses use the GCS for frequent neurological assessments to detect changes in a patient's condition promptly. A decrease in the GCS score, even by one point, can signify neurological deterioration and must be reported immediately.
The GCS provides a common language for healthcare professionals to communicate a patient's level of consciousness, ensuring consistency in assessment and documentation.
What if the patient is intubated and cannot speak? The GCS can still be used. The verbal response component is marked as 'not testable' (NT), and the assessment focuses on the eye and motor responses. The total score is not calculated, but the individual components are trended.

How to Approach the Question

Identify the core of the question: it asks for the 'best motor response' score on the 'Glasgow Coma Scale'.
Recall the structure of the GCS, which has three parts: eye, verbal, and motor.
Focus on the motor response component. Remember that its scores range from 1 to 6.
Understand that for most clinical scales, a higher score indicates a better or more normal function.
Therefore, the 'best' response will correspond to the highest possible score in the motor category.
Evaluate the options provided. The highest score available is 6, which corresponds to 'Obeys commands,' confirming it as the best motor response.

Concept Tested & Keywords

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