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…
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….
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…
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…
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…
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…
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”…
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…
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…
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…
