The pressure manometer in-line with a bubble CPAP setup is ...

[809779]

The pressure manometer in-line with a bubble CPAP setup is reading higher than the depth of the expiratory limb in the liquid-filled bottle. This is most likely caused by which of the following?
 
  a. Set flow rate above 5 L/min
  b. Set flow rate below 5 L/min
  c. Fluid in the inspiratory line
  d. Improperly placed manometer

Question 2

The mode of ventilation that allows a neonate to breathe at a high and a low CPAP setting is which of the following?
 
  a. SiPAP
  b. HFOV
  c. Nasal IMV
  d. Nasal HFV

[sylvia]

Answer to Question 1

ANS: A
The set flow rate for a bubble CPAP setup is 5 L/min. Flow rates above 5 L/min result in higher pressures than those anticipated by the submersion depth of the distal tubing. Flow rates lower than 5 L/min would not be able to maintain the bubble CPAP level needed for a given depth. Improper placement of the manometer could result in lower pressures than expected, because the manometer would not be reading pressure on exhalation. Fluid in the inspiratory line may drop the pressure reading by the manometer, because it would cause back pressure behind the fluid.

Answer to Question 2

ANS: A
Nasal SiPAP allows the neonate to breathe continuously at CPAP and during a sustained sigh breath to recruit lung units at two different lung volumes. It allows the neonate to breathe at a high and a low CPAP setting.

[809779]

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[sylvia]

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