A patient is brought to the emergency department following a motor vehicle accident. The initial assessment reveals a Glasgow Coma Scale (GCS) score of 7. What is the most appropriate interpretation of this score by the nurse?

Appeared in: SGPGI Nursing Officer-2022

Explanation

A Glasgow Coma Scale (GCS) score of 7 falls within the range of 3-8, which is classified as a severe head injury.
A GCS score of 8 or less is the standard clinical definition of a coma, indicating a profound depression of consciousness.
This level of impairment suggests the patient is unable to protect their own airway, making it a medical emergency.
The score reflects significant impairment in eye-opening, verbal, and motor responses.

Option A: A mild head injury corresponds to a GCS score of 13-15. A score of 7 is significantly lower and indicates a much more severe injury.
Option B: A moderate head injury corresponds to a GCS score of 9-12. A score of 7 is below this range, indicating a severe, not moderate, injury.
Option D: Brain death is a diagnosis of complete and irreversible cessation of all brain function, including the brainstem. It cannot be determined by a GCS score alone. While a patient with brain death would have a GCS of 3, a GCS of 7 does not imply brain death.

Clinical Relevance

Nursing practice connection: Prioritize focused assessment, early escalation, and real-time monitoring when managing Interpretation of Glasgow Coma Scale (GCS) score in acute care settings.
The GCS is a fundamental tool for nurses in emergency and critical care to quickly assess, document, and communicate a patient's level of consciousness and detect neurological deterioration.
The mnemonic 'Less than 8, intubate' is a critical patient safety principle. A nurse identifying a patient with a GCS of 7 must anticipate the need for immediate airway management to prevent hypoxia and secondary brain injury.
What if? If the patient's GCS score was initially 12 and dropped to 7 over 30 minutes, this would indicate rapid neurological deterioration, possibly due to an expanding intracranial hematoma, requiring immediate neurosurgical consultation and intervention.

How to Approach the Question

First, identify the key clinical value provided in the question stem: a Glasgow Coma Scale (GCS) score of 7.
Recall the standard classifications of head injury severity based on the GCS score.
The ranges are generally: Mild (13-15), Moderate (9-12), and Severe (3-8).
Place the given score of 7 into the correct category. It falls into the 'Severe' range.
Recall the clinical definition of coma, which is a GCS score of 8 or less.
Evaluate the options based on this classification. Option C correctly identifies a GCS of 7 as a severe head injury and indicative of coma.

Concept Tested & Keywords

Concept Tested: Interpretation of Glasgow Coma Scale (GCS) score
Stem keywords: Glasgow Coma Scale (GCS), score of 7, motor vehicle accident, head injury
Lead-in keywords: most appropriate interpretation
Clinical cues: GCS of 7: This specific value is the key to determining the severity of the head injury.

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E6 Medicine Harrison 22e Part 2 p. 1475-1477

E6 Nursing Fundamentals Taylor p. 412-414

E6 Nursing Brunner Adult Health 3SA Vol 2 Part 2 p. 86-88

Practise the full SGPGI Nursing Officer-2022

Attempt every question from this paper in a timed mock, then review the full solution for each one.