The most appropriate circuit for ventilating a spontaneously breathing infant -
Jackson Rees modification of Ayre's T piece
Mapleson A or Magill's circuit
Mapleson C or water's to & fro canister
Bain's circuit
Ayre&;s T piece is used in infants. The patient inspires fresh gas from the reservoir tube,expires into the reservoir tube. Advantages are they are inexpensive,compact,no valves and low dead space
Anaesthetic equipments