ABA Anesthetic Equipment and Technology Flashcards
6 cards from real ABA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ABA Anesthetic Equipment and Technology flashcards as text
What is the primary purpose of the circle breathing system in anesthesia delivery?
Answer: To reuse exhaled gases after CO2 absorption
The circle system allows rebreathing of exhaled gases after passing through a CO2 absorber, reducing waste anesthetic gas and conserving heat and humidity.
Which anesthesia machine safety device mechanically links N2O and O2 flow controls to prevent delivery of a hypoxic gas mixture?
Answer: Oxygen ratio monitor controller (ORMC)
The ORMC mechanically links nitrous oxide and oxygen flow controls to ensure a minimum oxygen concentration is always maintained.
In the United States, what does the color coding on medical gas cylinders indicate?
Answer: Gas content identification
Color coding on US medical gas cylinders identifies the gas content, such as green for oxygen and blue for nitrous oxide.
What is the function of the Adjustable Pressure Limiting (APL) valve in an anesthesia breathing circuit?
Answer: To vent excess gas and limit maximum circuit pressure
The APL valve vents excess gas from the breathing circuit to scavenging, preventing dangerous pressure buildup and barotrauma.
Which CO2 absorbent material was phased out of anesthesia machines due to reactions with volatile anesthetics producing toxic byproducts?
Answer: Baralyme
Baralyme was associated with reactions with desflurane and sevoflurane to produce compound A and carbon monoxide, leading to its discontinuation.
What is the primary purpose of fresh gas decoupling in modern anesthesia ventilators?
Answer: To isolate fresh gas flow from tidal volume delivery during inspiration
Fresh gas decoupling prevents the fresh gas flow from adding to or subtracting from the set tidal volume during positive pressure ventilation.