Which one of the following statements is incorrect about the Glasgow Coma Scale?

SCTIMST Staff Nurse - 2015 (Set-A)

Medical Surgical Nursing

Easy

Appeared in: SCTIMST Staff Nurse - 2015 (Set-A)

Explanation

The Glasgow Coma Scale (GCS) does not assess sensory responses like the ability to feel light touch or differentiate sharp from dull sensations.
GCS is designed to objectively measure the level of consciousness by evaluating three specific parameters: eye opening, verbal response, and motor response.
While a painful stimulus may be used to elicit a motor or eye response, the scale does not grade the patient's sensory perception of that pain.
Sensory system assessment is a distinct and separate component of a complete neurological examination.

Option A: This is a correct statement. The GCS is a fundamental tool used worldwide to assess a patient's level of consciousness, which is a key component of their overall neurological status.
Option C: This is a correct statement. The maximum possible score on the GCS is 15, which is achieved by adding the highest scores from each of the three categories (Eye Opening: 4 + Verbal Response: 5 + Motor Response: 6 = 15).
Option D: This is a correct statement. A GCS score of 8 or less is the generally accepted clinical definition of a coma, indicating a severe head injury and often necessitating advanced airway management like intubation.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Assessment of neurological status using the Glasgow Coma Scale (GCS) as background academic context rather than a clinical decision trigger.
Accurate GCS assessment is a critical nursing skill for monitoring trends in a patient's neurological condition. A drop in the GCS score is an early warning sign of deteriorating brain function and requires immediate escalation.
Nurses must document not just the total GCS score, but the individual components (e.g., E4V5M6 = 15). This provides a more detailed picture of the patient's status; for example, a change from M6 to M5, even with the same total score, is significant.
What if? If a patient is intubated, they cannot provide a verbal response. In this case, the score is documented with a 'T' (e.g., E2M4VT). The verbal score is not recorded as '1' (no response), as this would falsely lower the total score and misrepresent the patient's condition.

How to Approach the Question

First, identify the core subject of the question, which is the Glasgow Coma Scale (GCS).
Next, notice the negative framing: the question asks for the 'incorrect' statement. This means you need to evaluate each option to find the one that is factually wrong.
Recall the three components of the GCS: Eye opening, Verbal response, and Motor response.
Evaluate each option against your knowledge of GCS: Does it measure neurological status? (Yes). Is the max score 15? (Yes). Does a score less than 8 mean coma? (Yes). Does it assess sensory responses? (No).
The statement that does not align with the known facts about GCS is the incorrect one and, therefore, the correct answer to this question.

Concept Tested & Keywords

Concept Tested: Assessment of neurological status using the Glasgow Coma Scale (GCS).
Stem keywords: Glasgow Coma Scale, GCS, incorrect statement
Lead-in keywords: incorrect
Negative lead-in flag: The question asks for the INCORRECT statement.

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