Chapter 5: Pulmonary Function Testing and Bedside Pulmonary Mechanics Test Bank
MULTIPLE CHOICE 1. Which of the following major forces opposes inspiration? a. Inspiratory flow b. Surface tension c. Airway resistance d. Respiratory rate ANS: C
The combination of lung compliance (C) and airway resistance (Raw) is the major force opposing inspiration, whereas elastic recoil is the force responsible for passive normal exhalation. REF: p. 66 2. Pulmonary function testing has been ordered in an infant. Which of the following represents a
real risk to this infant? a. The infant may require sedation for up to 3 hours. b. If the infant cries, it will make the test invalid or open to misinterpretation. c. The gases used for the PFT may be toxic for the infant. d. The inability to feed the child 24 hours prior to the test ANS: B
In infant testing, the subject may need to be lightly sedated in the laboratory for 2 to 3 hours to complete a full set of studies. Sedation carries some risk, and testing should not be viewed as routine. The NPO guidelines from the hospital sedation policy may allow infants who are younger than 6 months to receive formula and solids for up to 6 hours, breast milk for up to 4 hours, and clear liquids for up to 2 hours before sedation. Children who are 6 months or older may receive solids and liquids for up to 6 hours and clear liquids for up to 2 hours before sedation. REF: p. 66 3. Why must caution be exercised when using a face mask while performing pulmonary function
testing on neonates? To prevent trigeminal nerve stimulation To avoid necrosis of the facial skin To prevent vagal reflexes To prevent gastric insufflations
a. b. c. d.
ANS: A
