Quiz Ch 20

  1. According to the U.S. Food and Drug Administration, which of the following mechanical ventilatory rates constitutes high-frequency ventilation (HFV)?

    D. More than 150 breaths/minute
  2. Enhanced diffusion is a function of which of the following factors?
    I. Inspiratory flow
    II. Plateau pressure
    III. Tidal volume
    IV. Respiratory frequency

    B. III and IV only
  3. What is the relationship between the tidal volume and the dead space volume in the context of high frequency ventilation?

    C. Dead space volume is greater than the tidal volume
  4. Which of the following, forms of mechanical ventilation is the most efficacious method for acquired bronchopleural fistulas?

    A. High-frequency jet ventilation (HFJV)
  5. Which of the following statements best describes the relationship between tidal volume and frequency during HFJV of pediatric and neonatal patients?

    B. Neonatal patients need higher frequencies and lower tidal volumes than pediatric patients.
  6. During HFOV, which of the following factors has a direct influence on a neonate’s delivered tidal volume?
    I. Frequency
    II. Oscillatory amplitude
    III. Peak inspiratory pressure
    IV. IPAP (inspiratory positive airway pressure) and EPAP (expiratory positive airway pressure)

    A. II only
  7. During HFOV, manipulation of which of the following components establishes the continuous distending pressure?
    I. Gas flow through the pneumotachometer during expiration
    II. Peak inspiratory pressure-trough pressure gradient
    III. Expiratory valve aperture
    IV. Bias flow

    B. III and IV only
  8. What is the recommended inspiratory time percent setting for HFOV?

    A. 33%
  9. Which of the following factors need to be considered for HFV ventilator circuits?
    I. Time for gas egress during exhalation
    II. Circuit compliance
    III. Endotracheal tube size
    IV. Intrinsic timing mechanisms

    B. I, II, and IV only
  10. What is the primary therapeutic goal when a patient with lungs prone to atelectasis receives HFV?

    B. To optimize lung inflation
  11. How is the high-volume strategy achieved when the goal is to deliver a high lung volume to a neonate receiving HFV?

    A. By increasing the continuous distending pressure
  12. What is a frequent requirement when employing the low-volume strategy while ventilating a neonatal patient with pulmonary interstitial emphysema by HFV?

    B. High inspired fraction of oxygen (FlO2)
  13. How is the minute ventilation decreased when a patient is being weaned from HFOV?

    A. By reducing oscillatory amplitude
  14. How is the radiographic assessment of neonatal lung volume assessed?

    B. Counting the number of posterior ribs above the diaphragm
  15. What are the consequences of failing to quickly wean a neonatal patient from HFV?
    I. Pulmonary over distention
    II. Pulmonary hypertension
    Ill. Alveolar derecruitment
    IV. Impaired cardiac output

    B. I and IV only
  16. Why did the original version of the Bunnell Life Pulse HFJV require a triple-lumen, high—low ETT?
    I. For injection of jet breaths into the proximal EU lumen
    II. For sampling pressure at the distal EU lumen
    III. For suctioning through the mid-portion of the EU lumen
    IV. For connection to conventional ventilation through the proximal EU lumen

    C. II and IV only
  17. Which of the following features characterize neonatal HFOV circuits?
    I. Larger diameter tubing for inspiratory gas flow
    II. Narrower diameter tubing for exhalation
    Ill. High-compliance tubing
    IV. Tubing with internally corrugated walls

    B. I and II only
  18. Which of the following steps might be involved when a therapist assesses a patient suspected of having a reduction of airway diameter while receiving HFV?
    I. Observe the patient’s chest wall for movement.
    II. Increase conventional ventilation.
    III. Apply ventilation via a manual resuscitation bag.
    IV. Reduce the oscillatory amplitude.

    B. I and IV only
  19. Why may HFOV not be an optimal ventilation strategy for patients who have either fresh particulate meconium aspiration or bronchopulmonary dysplasia?

    A. Gas trapping may develop.
  20. Which of the following issues continue to confront the practice of surfactant replacement therapy?
    I. Type of HFV device to use
    II. Nature of surfactant to administer
    III. Timing of surfactant replacement
    IV. Method of delivery during HFV

    A. II, III, and IV only
Card Set
Quiz Ch 20
Quiz Ch 20