Breathing Circuits

Question 1

What Mapleson circuit is best for spontaneous ventilation?

Answer 1

• Best: Mapleson A

- Worst: Mapleson B

Question 2

What Mapleson circuit is best for controlled ventilation?

Answer 2

• Best: Mapleson D

- Worst: Mapleoson A

Question 3

How much FGF is required ti prevent rebreathing in a Mapleson Circuit?

Answer 3

• 2.5x the pt’s minute ventilation

- Mapleson A requires FGF of 20 L/min during controlled ventilation