EXERCISES: LESSON 1
INSTRUCTIONS: Answer the following exercises by circling the lettered response that
best answers the question.
After you have answered all of the exercises, turn to "Solutions to Exercises" at
the end of the lesson and check your answers. For each exercise answered incorrectly,
reread the lesson material referenced after the solution.
Which of the following statements describes in part how an anesthesia apparatus
a. Oxygen and nitrous oxide cylinders provide the gas supply directly to the
system without need for regulators.
b. Nitrous oxide gas serves as the vehicle to carry anesthetic vapor from the
vaporizer to the patient.
The absorber captures carbon dioxide and recycles it into the breathing circuit.
d. Relief valves release excess gas into the atmosphere if pressure within the
breathing circuit exceeds a set level.
Which of the following statements describes in part how to perform an operational
checkout of the Ohmeda anesthesia unit?
a. When you connect the nitrous line to the gas cylinder, turn on the N2O flow
meter valve, and disconnect the oxygen line from the cylinder, the nitrous ball
in the N2O flow meter must rise.
b. When you connect the oxygen line to the gas cylinder, press the oxygen flush,
and observe the pressure gauge, it should drop slowly as you pressurize the
When you pressurize the system to 25 cm H2O and release the oxygen flush,
the system should hold pressure with the vaporizer ON and OFF.
d. When you put your hand over the vaporizer outlet (replacing a disconnected
inhalation hose) and push the oxygen flush, the pressure relief valve should
not relieve pressure.