This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anaesthesia
Which of the following circuit is preferred in child for spontaneous respiration: 
Select and explain. 
A. Mapleson A, B. Jackson & Rees circuit, C. Mapleson C, D. Mapleson E
A: Mapleson A
Answer: A: Mapleson A 
Explanation: Ans. (A) Mapleson APediatric Breathing Circuits:Type E Mapleson Circuit:It is Ayre's T piece with corrugated tubing.It is a pediatric circuitAs it does not have breathing bag so it is not a complete circuit (It was made complete by attaching a breathing bag by attaching a breathing bagby Jackson & Rees).Type E is basically a circuit only for spontaneous respiration (as it does not contain breathing bag) but can be utilized for controlled ventilation by intermittently occluding the end of expiratory limb