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Understanding Anesthesia: Nonrebreathing Circuits Review

Learn about nonrebreathing circuits, such as Mapleson designs, their function, and safety features. Discover how fresh gas is inhaled and expired gas is flushed out for efficient ventilation. Ideal for VTNE prep or anesthesia review.

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Understanding Anesthesia: Nonrebreathing Circuits Review

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  1. VTNE Prep Anesthesia Review – Nonrebreathing Circuits

  2. Nonrebreathing Circuits http://asevet.com/links.htm

  3. 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

  4. 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

  5. Unsafe for nonrebreathing http://asevet.com/links.htm Mapleson B & C

  6. 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

  7. 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

  8. 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

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