This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Initial Assessment, Subject name: Surgery
Which of the following conditions needs emergency endotracheal intubation? 
Select and explain. 
A. GCS<7, B. Tension pneumothorax, C. Cardiac tamponade, D. Bleeding gastric ulcer
A: GCS<7
Answer: A: GCS<7 
Explanation: Ans. is 'a' i.e., GCS < 7 o See above explanation