A low-flow bubble humidifier is running at 4 L/min and is not ...

[809779]

A low-flow bubble humidifier is running at 4 L/min and is not whistling. Which action should be taken at this time?
 
  a. No action should be taken because this is normal.
  b. Increase the flow to make it whistle.
  c. Replace the spring-loaded valve.
  d. Change the unit because there is a leak.

Question 2

Which of the following is a true statement about the delivery of warm, humidified gas to the lungs?
 
  a. The gas delivered to the nose or mouth contains 95 relative humidity and has an absolute humidity of 28 mg/L to 34 mg/L at 29 C to 32 C.
  b. The gas delivered to the hypopharynx contains 50 relative humidity and has an absolute humidity level of 10 mg/L at 22 C.
  c. The gas delivered to the midtrachea con-tains 50 relative humidity and has an absolute humidity level of 36 mg/L to 40 mg/L at 31 C to 35 C.
  d. The gas delivered to the midtrachea con-tains 100 relative humidity and has an absolute humidity level of 36 mg/L to 40 mg/L at 31 C to 35 C.

[jojobee318]

Answer to Question 1

ANS: A
The humidifier is functioning normally. The pressure-relief valve releases high pressure (>2 psi) to prevent bursting of the humidifier bottle when there is an obstruction creating a whistling sound. Leaks are not detected by the pressure-relief valve.

Answer to Question 2

ANS: D
The gas delivered to the midtrachea contains 100 relative humidity and has an absolute humid-ity level of 36 mg/L to 40 mg/L at 31 C to 35 C. The gas delivered to the hypopharynx contains 95 relative humidity and has an absolute humidity level of 28 mg/L to 34 mg/L at 29 C to 32 C. The gas delivered to the nose or mouth contains 50 relative humidity and has an absolute humidity level of 10 mg/L at 22 C. See Box 6-3.