CAA CAA Anesthesia Equipment & Technology

Question 1

Which component of the anesthesia machine is responsible for reducing high-pressure gas from cylinders to a safe working pressure?

Accepted Answer

Pressure regulator

Answer

The pressure regulator reduces high cylinder pressure (up to 2200 psi for O2) down to a safe working pressure of approximately 45–55 psi.

Question 2

What is the purpose of the oxygen fail-safe device on an anesthesia machine?

Accepted Answer

It shuts off or proportionally reduces nitrous oxide flow if oxygen pressure drops

Answer

The oxygen fail-safe device automatically shuts off or reduces N2O (and other gases) if oxygen supply pressure falls, preventing hypoxic mixtures.

Question 3

Which type of vaporizer is classified as a 'variable bypass' vaporizer?

Accepted Answer

Datex-Ohmeda Tec 7

Answer

The Datex-Ohmeda Tec 7 is a variable bypass vaporizer where a portion of fresh gas flow is diverted through the vaporizing chamber.

Question 4

A circle breathing system's unidirectional valves serve which primary function?

Accepted Answer

Ensuring unidirectional gas flow through the circuit

Answer

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.

Question 5

What color change indicates that soda lime CO2 absorbent is exhausted?

Accepted Answer

White to pink/violet

Answer

Most soda lime contains an ethyl violet indicator that turns pink/violet when the absorbent is exhausted and can no longer neutralize CO2.

(CAA) Certified Anesthesia Assistant Practice Test

(CAA) Certified Anesthesia Assistant Practice Test

CAA CAA Anesthesia Equipment & Technology