Which of the following circuit is preferred in child for spontaneous respiration:

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