A nonrebreathing mask has been replaced by a high-flow nasal ...

[Starlight]

A nonrebreathing mask has been replaced by a high-flow nasal cannula humidifier set at 15 L/min. The benefit of this device to a patient is that it:
 
  a. decreases airway resistance.
  b. delivers medication to the airways.
  c. prevents an increased humidity deficit.
  d. dilutes thick secretions for easy removal.

Question 2

The efficiency of a bubble humidifier depends on which of the following? 1. Presence of a diffuser 2. Water level in the humidifier 3. Surface area between the gas and water 4. Length of the oxygen tubing being used
 
  a. 1 only c. 3 and 4 only
  b. 2 and 4 only d. 1, 2, and 3 only

[frre432]

Answer to Question 1

ANS: C
The high-flow nasal cannula humidifier will prevent an increase in humidity deficit because it us-es a special bubble humidifier that can accommodate the rapid flow rates and still humidify the gas.

Answer to Question 2

ANS: D
The effectiveness of bubble humidifiers depends of the presence of a diffuser, the water level in the humidifier, and the surface area between the gas and water. The length of the oxygen tubing being used will not affect the efficiency of the bubble humidifier.

[Starlight]

Thank you

[frre432]

Happy to help you