The most appropriate circuit for ventilating a spontaneously breathing infant -: (A) Jackson Rees modification of Ayre's T piece, (B) Mapleson A or Magill's circuit, (C) Mapleson C or water's to & fro canister, (D) Bain's circuit
Answer is A. 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