Which of the following are potential complications of continuous positive airway pressure (CPAP) therapy? 1. Barotrauma 2. Hyperventilation 3. Gastric distention 4. Hypercapnia
a. 1 and 3 only
b. 2 and 3 only
c. 1, 3, and 4 only
d. 2, 3, and 4 only
Q. 2 While monitoring a patient receiving +12 cm H2O flow-mask continuous positive airway pres-sure, you note that the pressure drops to +6 cm H2O during inspiration, but returns to +12 cm H2O during exhalation.
Which of the following would likely correct this problem?
a. Check and correct any mask leaks.
b. Check and correct any outflow obstruc-tion.
c. Increase the system flow.
d. Increase the system pressure.
Q. 3 Which of the following are essential components of a continuous positive airway pressure (CPAP) flow system?
1. Blended source of pressurized gas
2. Nonrebreathing circuit with reservoir bag
3. Low-pressure or disconnect alarm
4. Expiratory threshold resistor
a. 3 and 4 only
b. 1, 2, and 4 only
c. 1 and 4 only
d. 1, 2, 3, and 4
Q. 4 During administration of a continuous positive airway pressure flow mask to a patient with ate-lectasis, you find it difficult to maintain the prescribed airway pressure. Which of the following is the most common explanation?
a. System or mask leaks
b. Outflow obstruction
c. Inadequate system flow
d. Inadequate trigger
Q. 5 Which of the following will make an intermittent positive-pressure breathing (IPPB) device cycle off prematurely?
1. Airflow obstructed
2. Kinked tubing
3. Occluded mouthpiece
4. Active resistance to inhalation
a. 1 and 2 only
b. 1 and 3 only
c. 1, 3, and 4 only
d. 1, 2, 3, and 4
Q. 6 Which of the following mechanisms probably contribute to the beneficial effects of continuous positive airway pressure (CPAP) in treating atelectasis?
1. Recruitment of collapsed alveoli
2. Decreased work of breathing
3. Improved distribution of ventilation
4. Increased efficiency of secretion removal
a. 1, 2, and 4 only
b. 2 and 3 only
c. 1 and 4 only
d. 1, 2, 3, and 4
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