Quiz Ch 20

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noah.aisner
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Quiz Ch 20
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2010-07-03 18:40:45
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Quiz Ch 20
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  1. According to the U.S. Food and Drug Administration, which of the following mechanical ventilatory rates constitutes high-frequency ventilation (HFV)?
    A. Exceeding 75 breaths/minute
    B. Greater than 125 breaths/minute
    C. More than 150 breaths/minute
    D. In excess of 100 breaths/minute
    C. More than 150 breaths/minute
    (this multiple choice question has been scrambled)
  2. Enhanced diffusion is a function of which of the following factors?
    I. Inspiratory flow
    II. Plateau pressure
    III. Tidal volume
    IV. Respiratory frequency
    A. I and III only
    B. III and IV only
    C. I, II, and IV only
    D. I, III, and IV only
    B. III and IV only
    (this multiple choice question has been scrambled)
  3. What is the relationship between the tidal volume and the dead space volume in the context of high frequency ventilation?
    A. The relationship between the two depends on the clinical condition of the patient
    B. Dead space volume is greater than the tidal volume
    C. The two are equal
    D. Tidal volume exceeds dead space volume
    B. Dead space volume is greater than the tidal volume
    (this multiple choice question has been scrambled)
  4. Which of the following, forms of mechanical ventilation is the most efficacious method for acquired bronchopleural fistulas?
    A. High-frequency jet ventilation (HFJV)
    B. High-frequency oscillatory ventilation (HFOV)
    C. High-frequency flow interruption (HFFI)
    D. Conventional ventilation (CV)
    A. High-frequency jet ventilation (HFJV)
    (this multiple choice question has been scrambled)
  5. Which of the following statements best describes the relationship between tidal volume and frequency during HFJV of pediatric and neonatal patients?
    A. Neonatal patients need higher frequencies and lower tidal volumes than pediatric patients.
    B. No relationship exists between these two ventilator features.
    C. Neonates require higher frequencies and higher tidal volumes than larger patients.
    D. Neonatal patients require lower frequencies and lower tidal volumes than pediatric patients.
    A. Neonatal patients need higher frequencies and lower tidal volumes than pediatric patients.
    (this multiple choice question has been scrambled)
  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. I and III only
    B. Ill and IV only
    C. II only
    D. II and III only
    C. II only
    (this multiple choice question has been scrambled)
  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
    A. III and IV only
    B. I only
    C. II and III only
    D. I, III, and IV only
    A. III and IV only
    (this multiple choice question has been scrambled)
  8. What is the recommended inspiratory time percent setting for HFOV?
    A. 50%
    B. 33%
    C. 20%
    D. 25%
    B. 33%
    (this multiple choice question has been scrambled)
  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
    A. I, II, and Ill only
    B. I and II only
    C. II, III, and IV only
    D. I, II, and IV only
    D. I, II, and IV only
    (this multiple choice question has been scrambled)
  10. What is the primary therapeutic goal when a patient with lungs prone to atelectasis receives HFV?
    A. To optimize lung inflation
    B. To reduce airway resistance
    C. To maximize gas exchange
    D. To minimize compressed volume
    A. To optimize lung inflation
    (this multiple choice question has been scrambled)
  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 decreasing the mean airway pressure
    B. By reducing the peak—trough pressure gradient
    C. By increasing the continuous distending pressure
    D. By increasing the expiratory flow resistance
    C. By increasing the continuous distending pressure
    (this multiple choice question has been scrambled)
  12. What is a frequent requirement when employing the low-volume strategy while ventilating a neonatal patient with pulmonary interstitial emphysema by HFV?
    A. Positive end-expiratory pressure
    B. High inspiratory flow
    C. High inspired fraction of oxygen (FlO2)
    D. Longer inspiratory time
    C. High inspired fraction of oxygen (FlO2)
    (this multiple choice question has been scrambled)
  13. How is the minute ventilation decreased when a patient is being weaned from HFOV?
    A. By decreasing peak pressure
    B. By minimizing Paw
    C. By reducing oscillatory amplitude
    D. By shortening the inspiratory time
    C. By reducing oscillatory amplitude
    (this multiple choice question has been scrambled)
  14. How is the radiographic assessment of neonatal lung volume assessed?
    A. Counting the number of anterior ribs above the diaphragm
    B. Counting the number of posterior ribs above the diaphragm
    C. Counting the number of posterior ribs below the clavicle
    D. Counting the number of anterior ribs below the clavicle
    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
    A. II and IV only
    B. I and IV only
    C. I and II only
    D. I and Ill only
    B. I and IV only
    (this multiple choice question has been scrambled)
  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
    A. I, II, and III only
    B. I and IV only
    C. II and IV only
    D. I and III only
    C. II and IV only
    (this multiple choice question has been scrambled)
  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
    A. II, Ill, and IV only
    B. I and Ill only
    C. I, II, and Ill only
    D. I and II only
    D. I and II only
    (this multiple choice question has been scrambled)
  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.
    A. I, II and III only
    B. II, III, and IV only
    C. I and IV only
    D. II and Ill only
    C. I and IV only
    (this multiple choice question has been scrambled)
  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.
    B. Intrapulmonary shunting becomes likely.
    C. Large increases in tidal volume delivery can occur.
    D. Ventilation time constants will be decreased.
    A. Gas trapping may develop.
    (this multiple choice question has been scrambled)
  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 and III only
    B. II, III, and IV only
    C. I only
    D. III and IV only
    B. II, III, and IV only
    (this multiple choice question has been scrambled)

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