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VTNE Prep. Anesthesia Review – Nonrebreathing Circuits. Nonrebreathing Circuits. http://asevet.com/links.htm. A.K.A – Mapleson A How it works = On inspiration the spring loaded valve closes; the pt. inhales fresh gas from reservoir tube
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VTNE Prep Anesthesia Review – Nonrebreathing Circuits
Nonrebreathing Circuits http://asevet.com/links.htm
A.K.A – Mapleson A How it works = On inspiration the spring loaded valve closes; the pt. inhales fresh gas from reservoir tube On expiration the pt. expires into the resevoir tube; toward end of respiration the reservoir bag fills; PPV opens; expired gas escapes out Fresh gas flushes the expired gas out of the reservoir tube; Reservoir tube fills w/ fresh gas http://asevet.com/links.htm Magill
A.K.A – Mapleson A How it works = Works the same as the Magill Primary difference is in the location of the springloaded valve Magill = by pt. Lack = by machine Lack = Easier to perform IPPV http://asevet.com/links.htm Lack
Unsafe for nonrebreathing http://asevet.com/links.htm Mapleson B & C
A.K.A. – Mapleson D How it Works = Fresh gas is inhaled from the resevoir tube Pt. exhales into the resevoir tube Fresh gas flushes out the resevoir tube; resevoir tube fills for the next breath http://asevet.com/links.htm Bain System
A.K.A. – Mapleson E How it Works = Pt. inhales fresh gas from the resevoir tube Pt. expires into the resevoir tube Fresh gas flushes the resevoir tube http://asevet.com/links.htm Ayre’s T-piece
A.K.A – Modification of the Arye’s T; Mapleson F How it Works = Same as Arye’s T Exept – connects to a 2-ended bag at the expiratory limb of the circuit Allows better visual on respirations Better facilitates IPPV http://asevet.com/links.htm Modified Jackson Rees