Declining Glasgow Coma Scale (GCS) well explained.
MUHAMMAD RAMZAN VS STATE ETC
Mr. Justice Muhammad Amjad Rafiq
11-03-2025
2025 LHC 915
Declining Glasgow Coma Scale (GCS) indicates a worsening neurological condition due to head injuries, stroke and other brain related issues.
The Glasgow Coma Scale (GCS) is a tool used to assess a patient's level of consciousness by evaluating their eye, verbal, and motor responses, with scores ranging from 3 to 15, where 3 indicates a comatose state and 15 represents normal consciousness. The GCS was developed in 1974 by experts at the University of Glasgow in Scotland. It's a widely used tool for measuring consciousness and coma. It assesses a person's ability to perform eye movements, speak, and move their body. The Glasgow Coma Scale has three categories that apply to a neurological examination. Most of them apply to the brain itself, but some can also involve spinal cord and nerves throughout the body. The GCS is measured with the help of followings;
Eye response: This relates to how awake and alert you are.
Motor Response: This part is about how well your brain can control muscle movement. It can also show if there are any issues with the connections between your brain and the rest of your body.
Verbal response: This tests how well certain brain abilities work, including thinking, memory, attention span and awareness of your surroundings.
The scores for each category (E, V, M) are added together to give a total GCS score. The GCS score should be recorded individually, for example, E2V3M4 results in a GCS score of 9. The GCS is used to objectively describe the extent of impaired consciousness in all types of acute medical and trauma patients. In the medical context, consciousness has three requirements;
(i) Awake: this includes whether or not you have the ability to wake up because of voice or touch. That’s what makes a coma different from just being asleep
(ii) Alert: this is how responsive you are to people talking to you and if you’re able to understand what’s happening in your immediate surroundings
(iii) Oriented: this means you know who you are, where you’re at, what day it is and other details related to the here and now.
A declining Glasgow Coma Scale (GCS) score, which measures a person's level of consciousness, typically indicates a worsening neurological condition, potentially due to factors like head injury, stroke, or other brain-related issues. Factors that can cause a GCS score to decrease are as under
(i) Traumatic Brain Injury (TBI): Head injuries, including concussions and more severe trauma, can lead to swelling, bleeding, or damage to brain tissue, all of which can impair consciousness and lower the GCS score.
(ii) Cerebrovascular Accidents (Stroke): Strokes, whether ischemic (due to blocked blood flow) or hemorrhagic (due to bleeding), can disrupt brain function and cause a decline in GCS
(iii) Intracranial Infections or Abscesses: Infections or abscesses within the brain can lead to inflammation and pressure, which can affect brain function and consciousness.
(iv) Other Neurological Conditions: Conditions like epilepsy, poisoning, or even certain psychiatric disorders can also lead to a reduced level of consciousness and a lower GCS score.
(v) Physiological Derangements: Factors like hypoxia (low blood oxygen), shock, or hypoglycemia (low blood sugar) can impair brain function and lower the GCS score.
(vi) Medications and Intoxication: Certain medications, including sedatives, or drug and alcohol intoxication can also depress consciousness and affect the GCS score
(vii) Intubation: If a patient is intubated and unable to speak, they are evaluated only on the motor and eye-opening response and the suffix T is added to their score to indicate intubation
(viii) Pre-existing conditions: Pre-existing conditions like dementia, speech and hearing impairment can also affect the GCS score.
GCS usually decreases due to head injuries, including concussions and more severe trauma, which can lead to swelling, bleeding, or damage to brain tissue, but in this case no head injury was observed by the doctor. Thus, the GCS is not a perfect tool which can be influenced by various factors, so it should be used in conjunction with other clinical assessments which the doctor has not mentioned in detail, leaving the subject to be scrutinized through examination of doctor as witness during the trial.

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