Question

Most effective circuit in spontaneous anaesthesia is

• A. Mapleson A
• B. Mapleson B
• C. Mapleson C
• D. Mapleson D

Answer 1

The Correct Option is A

In the field of anaesthesia, understanding the efficacy of different breathing circuits is crucial for spontaneous ventilation in patients. The Mapleson classification describes several anaesthetic breathing systems, specifically Mapleson A, B, C, D, E, and F, each with unique characteristics and applications.

For spontaneous ventilation, the Mapleson A system is considered the most efficient. The key advantages of the Mapleson A system during spontaneous breathing include:

• Efficient Carbon Dioxide Removal: The placement of the reservoir bag and the fresh gas flow arrangement in Mapleson A ensures effective elimination of exhaled carbon dioxide.
• Low Fresh Gas Flow Requirements: The design allows it to operate effectively with relatively low fresh gas flow rates, making it economical for spontaneous ventilation.
• Simplicity of Use: The straightforward setup minimizes the complexity for the anaesthetist, reducing the risk of operator error.

In conclusion, given these advantages, the Mapleson A system is considered the most effective circuit for spontaneous anaesthesia.