In a spring-loaded bellows volume-delivery device, the amount of pressure is determined by the:
a. location of the bellows.
b. volume setting on the ventilator.
c. tightness of the spring.
d. electrical power provided to the spring.
Q. 2 The volume displacement device that creates a sinusoidal flow waveform is which of the follow-ing?
a. Rotary drive piston
b. Linear drive piston
c. Spring-loaded bellows
d. Proportional solenoid
Q. 3 A series of tubes that allow gas to flow inside the ventilator and between the ventilator and the patient is referred to as the:
a. pneumatic circuit.
b. control circuit.
c. control scheme.
d. patient circuit.
Q. 4 Modern intensive care units' (ICU) ventilators regulate gas flow to the patient by using which of the following?
a. Rotary drive pistons
b. Linear drive pistons
c. Proportional solenoids
d. Spring-loaded bellows
Q. 5 The function of the exhalation valve is to do which of the following?
a. Adjust the flow going to the patient.
b. Close during exhalation to vent patient gas.
c. Seal the external circuit during inspiration.
d. Determine the volume being delivered.
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