Mapleson Circuits Flashcards
Which Mapleson circuit is best for spontaneous ventilation?
Mapleson A
think spontAneous
Which Mapleson circuit is best for controlled ventilation?
Mapleson D
think controlleD
How does the Mapleson E differ from the rest?
It does not contain and APL valve or reservoir bag
think “it is Empty of the normal components”
What is another name for the Mapleson E?
Ayre’s T Piece
What is another name for the Mapleson F?
Jackson-Rees
What components are present in Mapleson circuits?
Reservoir bag
Fresh gas inlet
Corrugated circuit tubing
APL valve
Mask
What components are NOT present in Mapleson circuits?
Unidirectional valves
CO2 absorber
What type of breathing circuits are Maplesons considered?
semi-open
non-rebreathing
since inhaled and exhaled gases travel in the same tubing, there’s risk of rebreathing
Which Mapleson circuit is the only one with the fresh gas inlet located near the bag?
Mapleson A
FGF is AwAy from the patient
Which Mapleson circuit does NOT have corrugated tubing?
Mapleson C
think Corrugated lacking
Which Mapleson circuit is the only circuit with the APL away from the patient?
Mapelson D
think controlleD
Which two Mapleson circuits do not have an APL valve anywhere?
Mapleson E and F
think “you’re EFfed without an APL”
What FGF does a Mapleson A require during controlled ventilation?
~20 L/min during con
How much FGF in required to prevent rebreathing in a Mapleson circuit?
~2.5 times the patient’s minute ventilation
Which Mapleson circuit is the worst choice for spontaneous ventilation? Controlled ventilation?
worst spontaneous: Mapleson B
worst controlled: Mapleson A
