A ventilator can derive its input power from which of the following sources? 1. Alternating current (AC) electricity 2. Battery 3. Pneumatic
a. 1 and 2 only
b. 1 and 3 only
c. 2 and 3 only
d. 1, 2, and 3
Q. 2 For which of the following uses might you consider the use of a purely pneumatically powered ventilator?
1. As a backup to electrically powered ventilators
2. When electrical device cannot be used (e.g., magnetic resonance imaging)
3. During certain types of patient transport
a. 1 and 2 only
b. 1 and 3 only
c. 2 and 3 only
d. 1, 2, and 3
Q. 3 Primary drive mechanisms used by modern ventilators include which of the following? 1. Compressed gas or reducing valve 2. Hydraulic or fluidic compressor 3. Electrical motor or compressor
a. 1 and 2 only
b. 1 and 3 only
c. 2 and 3 only
d. 1, 2, and 3
Q. 4 Types of output control valves used in modern ventilators include which of the following? 1. Pneumatic diaphragm valve 2. Proportional valve 3. Electromagnetic poppet or plunger 4. Linear screw valve
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only
Q. 5 Which of the following major categories of ventilator function are useful in classifying ventila-tors? 1. Control system 2. Power transmission and conversion 3. Output 4. Input
a. 1 and 2 only
b. 3 and 4 only
c. 1, 3, and 4 only
d. 1, 2, 3, and 4
Q. 6 The respiratory therapist in the ICU is called to assess a patient with ARDS. The patient is SOB. The x-ray shows white chest radiograph and the PAO2 is 60 mm Hg on an FiO2 of 100. Which of the following is indicated?
a. Shunting
b. Alveolar hyperventilation
c. Decreased CO2
d. Perfusion impairment
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