**Question:** A GCS (Glasgow Coma Scale) of an intubated person with abdominal flexion attitude and eye opening only to pain is:

A. 13
B. 14
C. 15
D. 11

**Correct Answer:** D. 11

**Core Concept:** Glasgow Coma Scale (GCS) is a commonly used neurological assessment tool that evaluates a patient's level of consciousness based on three components: eye, verbal, and motor responses. A score of 15 indicates normal consciousness, while lower scores indicate impaired consciousness.

**Why the Correct Answer is Right:** In this scenario, the patient has abdominal flexion attitude (option D) and eye opening only to pain (option D). These findings suggest that the patient's level of consciousness is impaired. In the GCS scoring system, abdominal flexion attitude and eye opening only to pain are associated with a score of 4 and 3 respectively. When we combine these scores (4+3=7), the overall GCS of the patient is 7, which corresponds to a score of 11 (1+3+4=7).

**Why Each Wrong Option is Incorrect:**

A. 13: The patient's score is not low enough to indicate severe impairment (score <12 is considered severe impairment). B. 14: The patient's score is slightly high for a severely impaired patient (score <12 is considered severe impairment). C. 15: The patient's score is normal (score ≥13 is considered normal). **Clinical Pearl:** The GCS is a valuable tool for monitoring a patient's neurological status and assessing the response to treatment. It is crucial for clinicians to obtain an accurate GCS score during patient assessment and regularly re-evaluate the score, especially in critically ill patients, to guide management decisions and predict prognosis.