This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Anaesthesia
Respiratory obstruction in comatose patients is usually due to 
Select and explain. 
A. Presence of airway, B. Presence of Ryle's tube, C. Tracheostomy, D. Falling back of tongue
D: Falling back of tongue
Answer: D: Falling back of tongue 
Explanation: (D) Falling back of tongue# Falling back of tongue results the Respiratory obstruction in comatose patients