Chapter: Clinical Anesthesiology: Anesthetic Equipment & Monitors : Breathing Systems
Mapleson Circuits
The insufflation and draw-over systems have several disadvantages: poor control of inspired gas con-centration (and, therefore, poor control of depth of anesthesia), mechanical drawbacks during head and neck surgery, and pollution of the operating room with large volumes of waste gas.
MAPLESON CIRCUITS
The insufflation and draw-over systems
have several disadvantages: poor control of inspired gas con-centration (and,
therefore, poor control of depth of anesthesia), mechanical drawbacks during
head and neck surgery, and pollution of the operating room with large volumes
of waste gas. The Mapleson sys-tems solve
some of these problems by incorporat-ing additional components (breathing
tubes, fresh gas inlets, adjustable pressure-limiting [APL] valves, and
reservoir bags) into the breathing circuit. The relative location of these
components determines circuit performance and is the basis of the Mapleson
classification ( Table 3–2).
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Clinical Anesthesiology: Anesthetic Equipment & Monitors : Breathing Systems : Mapleson Circuits |
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Clinical Anesthesiology: Anesthetic Equipment & Monitors : Breathing Systems