CAA Equipment & Technology in Anesthesia 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 Equipment & Technology in Anesthesia flashcards as text
Which component of the anesthesia machine is responsible for reducing high-pressure gas from the cylinder to a lower, usable working pressure?
Answer: Pressure regulator (reducing valve)
The pressure regulator reduces high-pressure cylinder gas to a safe working pressure of approximately 45–55 psi for use in the machine.
The oxygen flush valve on an anesthesia machine delivers oxygen at approximately what flow rate?
Answer: 35–75 L/min
The oxygen flush valve bypasses the flowmeters and vaporizer, delivering oxygen at 35–75 L/min directly to the common gas outlet.
Which safety feature prevents the administration of a hypoxic gas mixture on a modern anesthesia machine?
Answer: Oxygen ratio monitor/controller (ORMC)
The oxygen ratio monitor/controller (ORMC) mechanically links nitrous oxide and oxygen flowmeters to ensure a minimum of 21–25% oxygen in the delivered mixture.
In a circle breathing system, the PRIMARY function of the CO2 absorbent is to:
Answer: Absorb exhaled carbon dioxide to allow rebreathing
CO2 absorbent (e.g., soda lime or Amsorb) chemically absorbs exhaled CO2, allowing safe rebreathing and reducing fresh gas requirements.
Which anesthesia machine alarm should prompt immediate verification that the oxygen supply has not been interrupted?
Answer: Oxygen supply low-pressure alarm
The oxygen supply low-pressure alarm activates when pipeline oxygen pressure falls below approximately 30 psi, indicating potential supply failure.
The Pin Index Safety System (PISS) is designed to prevent:
Answer: Wrong gas cylinder attachment to the yoke
PISS uses unique pin-hole patterns on cylinder valve stems and yokes to ensure only the correct gas cylinder can be connected to each yoke.