Relative humidity output from most disposable bubble humidifiers range from:
A) 10-20 relative humidity
B) 23-33 relative humidity
C) 33-40 relative humidity
D) > 50 relative humidity
Q. 2 Many bubble humidifiers incorporate which of the following safety features?
I. Diameter Index Safety System (DISS) inlet fitting
II. 2 psi pop-off valve
III. sealed prefilled reservoir
A) I only
B) I and II only
C) II and III only
D) I, II, and III only
Q. 3 According to the AARC Clinical Practice Guideline: Oxygen Therapy for Adults in the Acute Care Setting, use of humidification with flows < 4 L/min:
A) is recommended.
B) is not recommended.
C) should be provided with a heated humidifier.
D) none of the above
Q. 4 According to the AARC Clinical Practice Guideline: Oxygen Therapy for Adults in the Acute Care Setting, use of humidification when flow exceeds 4 L/min:
A) is recommended.
B) is not recommended.
C) should be provided with a heated humidifier.
D) none of the above
Q. 5 When placing a thermometer or thermistor probe to monitor a heated humidifier's temperature output, the probe:
A) should be placed at the outlet of the humidifier
B) should be placed in the middle of the circuit
C) should be placed proximal to the patient
D) none of the above
Q. 6 When humidifying an artificial airway using a heated humidifier, equipment you need includes:
I. large bore tubing (22-mm diameter)
II. drainage bag or trap
III. thermometer or temperature probe
IV. sterile water
A) I only
B) I and II only
C) I, II, and III only
D) I, II, III, and IV only
Q. 7 According to the American Association for Respiratory Care Clinical Practice Guideline: Humidification During Invasive and Non-Invasive Mechanical Ventilation, which of the following are contraindications for the use of a heat moisture exchanger (HME)?
I. thick copious secretions
II. body temperature less than 30 degrees Celsius
III. spontaneous minute volumes > 10 L/min
A) I only
B) II only
C) I and II only
D) I, II, and III only
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