Mapleson’s classification of anesthetic breathing system: (A) Describes four systems A, B, C, D, (B) Classifies the Bain system as Mapleson, (C) Describes the T-piece as M, (D) Describes the T-piece system as requiring a fresh gas flow rate of 1.5 – 2 times the minute volume
Answer is B. The Mapleson D may be described as a co-axial modification of the basic T-piece system, developed to facilitate scavenging of waste anaesthetic gases.
Circuit