CAA Anesthesia Equipment & Technology Flashcards
6 cards from real CAA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CAA Anesthesia Equipment & Technology flashcards as text
Which component of the anesthesia machine is responsible for reducing high-pressure gas from cylinders to a safe working pressure?
Answer: Pressure regulator
The pressure regulator reduces high cylinder pressure (up to 2200 psi for O2) down to a safe working pressure of approximately 45–55 psi.
What is the purpose of the oxygen fail-safe device on an anesthesia machine?
Answer: It shuts off or proportionally reduces nitrous oxide flow if oxygen pressure drops
The oxygen fail-safe device automatically shuts off or reduces N2O (and other gases) if oxygen supply pressure falls, preventing hypoxic mixtures.
Which type of vaporizer is classified as a 'variable bypass' vaporizer?
Answer: Datex-Ohmeda Tec 7
The Datex-Ohmeda Tec 7 is a variable bypass vaporizer where a portion of fresh gas flow is diverted through the vaporizing chamber.
A circle breathing system's unidirectional valves serve which primary function?
Answer: Ensuring unidirectional gas flow through the circuit
Unidirectional (one-way) valves in the circle system ensure exhaled gas flows through the CO2 absorber and fresh gas flows to the patient without mixing.
What color change indicates that soda lime CO2 absorbent is exhausted?
Answer: White to pink/violet
Most soda lime contains an ethyl violet indicator that turns pink/violet when the absorbent is exhausted and can no longer neutralize CO2.
Which parameter does a spirometry loop on the anesthesia ventilator monitor display?
Answer: Flow–volume loop
A spirometry (flow–volume) loop plots flow against tidal volume, helping detect bronchospasm, circuit leaks, and patient–ventilator dyssynchrony.