Circle Circuit

Dec 21, 2016 by in ANESTHESIA Comments Off on Circle Circuit

KEYWORDS mechanical dead space leaks rebreathing connectors adaptors reservoir bag corrugated tubing unidirectional valves closed and semi-closed circuits adjustable pressure-limiting valve pressure monitor apnea monitor   The circle circuit is…

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Bag Valve Mask and Mapleson Circuits

Dec 21, 2016 by in ANESTHESIA Comments Off on Bag Valve Mask and Mapleson Circuits

KEYWORDS portable ventilation devices nonrebreathing valves noncircle systems BAG VALVE MASK The bag valve mask (BVM) is known by many different names, including manual resuscitator, self-inflating bag, and so on….

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Pneumatic Systems

Dec 21, 2016 by in ANESTHESIA Comments Off on Pneumatic Systems

KEYWORDS oxygen nitrous oxide medical air design of anesthesia machines oxygen supply systems medical gas cylinders regulators   In this chapter, we will discuss how our medical gases (oxygen, nitrous…

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Anesthesia Machine Ventilators

Dec 21, 2016 by in ANESTHESIA Comments Off on Anesthesia Machine Ventilators

KEYWORD ventilator classification   Some anesthesia machine ventilators are visible, but others are inside the machine. You may think the ventilator is the “business end” of the machine, and in…

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Vaporizers

Dec 21, 2016 by in ANESTHESIA Comments Off on Vaporizers

KEYWORDS vaporizer types vaporizer safety features   Vaporizers are one of our interfaces with the anesthesia machine. We continually adjust them throughout each case we do. But do we really…

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Carbon Dioxide Absorber

Dec 21, 2016 by in ANESTHESIA Comments Off on Carbon Dioxide Absorber

KEYWORDS CO2 absorption carbon dioxide absorption efficiency Compound A carbon monoxide   The hallmark of a circle anesthesia circuit is rebreathing. Of course, a circle circuit is not a true…

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Warming Devices and Temperature Monitoring

Dec 21, 2016 by in ANESTHESIA Comments Off on Warming Devices and Temperature Monitoring

KEYWORDS temperature monitoring heat loss mechanisms warming devices types of warming devices efficacy of warming devices complications of warming devices blood warmers   Perioperative patient temperature changes are a “hot”…

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Fail-Safe Systems

Dec 21, 2016 by in ANESTHESIA Comments Off on Fail-Safe Systems

KEYWORDS medical gas cylinders alarm and safety features: anesthesia machine proportioning devices pressure fail-safe   A “fail-safe” is a system or device that limits damage or harm. For instance, on…

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Hemodynamic Monitoring

Dec 21, 2016 by in ANESTHESIA Comments Off on Hemodynamic Monitoring

KEYWORDS pressure transducers: resonance damping noninvasive blood pressure measurement oscillometry   The frequent measurement of a patient’s arterial blood pressure (BP) is standard care in anesthesia. The guidelines state that…

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Capnography and Gas Monitoring

Dec 21, 2016 by in ANESTHESIA Comments Off on Capnography and Gas Monitoring

KEYWORDS instrumentation gas concentrations infrared absorption mass spectrometry Raman scatter analysis monitoring methods gas concentrations oxygen nitrogen carbon dioxide anesthetic gases and vapors   How comfortable would you be not…

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