Final answer:
The Glasgow Coma Scale (GCS) is used to assess the level of consciousness in a patient with a head injury. It evaluates eye-opening response, verbal response, and motor response.
Step-by-step explanation:
The Glasgow Coma Scale (GCS) is used to assess the level of consciousness in a patient with a head injury. It evaluates three aspects: eye-opening response, verbal response, and motor response. Each aspect is assigned a score ranging from 1 to 4 or 5, and the scores are combined to give a total GCS score.
In this scenario, the patient opens his eyes when spoken to (score of 4 for eye-opening response), is confused about the time and date (score of 4 for verbal response), and is able to move all of his extremities on command (score of 6 for motor response).
Adding up the scores for eye-opening response (4), verbal response (4), and motor response (6), the patient's total GCS score is 14.