Question 1

Which of the following are necessary features to look for in selecting a heated humidifier?
1)  Water level readily visible
2)  Over-temperature protection
3)  Auditory and visual alarms
4)  Minimal temperature overshoot

Accepted Answer

A)  2 and 4 only
B)  1, 2, and 3 only
C)  3 and 4 only
D)  1, 2, 3, and 4

Question 2

A patient receiving ventilatory support is being provided with humidification using a heat and moisture exchanger (HME) . A physician orders a bronchodilator drug administered through a metered dose inhaler (MDI)  via the ventilator circuit. Which of the following must be performed to ensure delivery of the drug to the patient?

Accepted Answer

A)   The inspiratory flow setting of the ventilator should be increased.
B)   The HME must be removed from the circuit during MDI use.
C)   The VT setting of the ventilator should be decreased.
D)   A heated humidifier should replace the HME when using the MDI.

Question 3

What are some types of passover humidifiers?
1)  Simple reservoir
2)  Membrane
3)  Wick

Accepted Answer

A)  1 and 2 only
B)  2 and 3 only
C)  1 and 3 only
D)  1, 2, and 3

Question 4

What is the primary goal of humidity therapy?

Accepted Answer

A)   Decrease airway reactivity to cold.
B)   Maintain normal physiologic conditions.
C)   Deliver drugs to the airway.
D)   Reduce upper airway inflammation.

Question 5

In checking a servo-controlled heated-wire humidifier system, you notice that a few drops of condensate tend to form but only near the patient's airway. Based on this observation, what can you conclude?

Accepted Answer

A)   The gas at the airway is fully saturated.
B)   The temperature setting of the heater is too high.
C)   The airway temperature exceeds the dew point.
D)   The temperature setting of the heater is too low.

Question 6

The typical pressure pop-off incorporated into most simple bubble humidifiers releases pressure above which of the following?

Accepted Answer

A)   760 mm Hg
B)   10 cm H2O
C)   250 kPa
D)   2 psig

Question 7

What are some potential problems with manually refilled heated humidifier reservoirs?
1)  Cross contamination and infection
2)  Variable compliance or delivered volume
3)  Delivery of dry and/or hot gases

Accepted Answer

A)  1 and 2 only
B)  2 and 3 only
C)  1 and 3 only
D)  1, 2, and 3

Question 8

A physician orders bland water aerosol administration to a patient with a tracheostomy. Which of the following airway devices could you use to meet this goal?
1)  Tracheostomy mask
2)  Face tent
3)  T tube
4)  Aerosol mask

Accepted Answer

A)  2 and 4 only
B)  1, 2, and 3 only
C)  1 and 3 only
D)  2, 3, and 4 only

Question 9

Which of the following would indicate that administration of a bland water aerosol to a patient with postextubation upper airway edema was having the desired effect?
1)  Decreased work of breathing
2)  Improved vital signs
3)  Decreased stridor or dyspnea
4)  Improved O2 saturation

Accepted Answer

A)  1, 2, and 3 only
B)  1, 2, 3, and 4
C)  3 and 4 only
D)  1, 2, and 4 only

Question 10

Unheated bubble humidifiers are of limited effectiveness at flows above which of the following?

Accepted Answer

A)   4 L/min
B)   6 L/min
C)   8 L/min
D)   10 L/min

Question 11

Which of the following nebulizers uses a piezoelectric transducer to generate liquid particle aerosols?

Accepted Answer

A)   Hydrodynamic nebulizer
B)   Ultrasonic nebulizer
C)   Jet nebulizer
D)   Centrifugal nebulizer

Question 12

To protect against obstructed or kinked tubing, simple bubble humidifiers incorporate which of the following?

Accepted Answer

A)   HEPA outlet filter
B)   Pressure relief valve
C)   Automatic hygrometer
D)   Electronic alarm system

Question 13

For which of the following patients would you select a heated humidifier?
1)  Patient receiving O2 through a bypassed upper airway
2)  Patient receiving long-term mechanical ventilation
3)  Patient receiving O2 through an oronasal mask

Accepted Answer

A)  1 and 2 only
B)  2 and 3 only
C)  2 only
D)  3 only

Question 14

A patient with chronic obstructive pulmonary disease (COPD)  is receiving heated water aerosol treatments through a jet nebulizer four times daily as a supplement to other bronchial hygiene measures designed to aid in mobilizing retained secretions. After each session, you notice the presence of moderate wheezing. Which of the following recommendations would you make to the physician?

Accepted Answer

A)   Discontinue the heated water aerosol treatments.
B)   Consider prior treatment with a bronchodilator.
C)   Switch to a higher-density aerosol (e.g., ultrasonic) .
D)   Discontinue the other bronchial hygiene measures.

Question 15

Which of the following are components of an ultrasonic nebulizer?
1)  Air-entrainment orifice
2)  Radiofrequency generator
3)  Nebulizer chamber
4)  Piezoelectric transducer
5)  Blower or fan

Accepted Answer

A)  1, 3, and 4 only
B)  2, 3, 4, and 5 only
C)  1, 2, 3, 4, and 5
D)  3, 4, and 5 only

Question 16

For which of the following patients might you recommend administration of a hypertonic saline aerosol?
1)  Acquired immune deficiency syndrome (AIDS)  patient with severe pneumonia symptoms
2)  Patient with a bypassed upper airway
3)  Patient suspected of having tuberculosis

Accepted Answer

A)  1, 2, and 3
B)  2 and 3 only
C)  1 and 2 only
D)  1 and 3 only

Question 17

What is the total water output of unheated large-volume jet nebulizers?

Accepted Answer

A)   10 to 16 mg H2O/L
B)   16 to 25 mg H2O/L
C)   26 to 35 mg H2O/L
D)   33 to 55 mg H2O/L

Question 18

Key considerations in selecting or recommending humidity or bland aerosol therapy for a patient include which of the following?
1)  Required gas flow
2)  Presence of an artificial tracheal airway
3)  Character of pulmonary secretions
4)  Need for or duration of mechanical ventilation
5)  Presence of heat and moisture exchanger (HME)  contraindications

Accepted Answer

A)  2, 3, and 4 only
B)  1, 2, and 3 only
C)  3, 4, and 5 only
D)  1, 2, 3, 4, and 5

Question 19

An ultrasonic nebulizer is not putting out any mist. After confirming (1)  good electrical power supply (cord, plug, and circuit breakers are in good working order) , (2)  carrier gas is actually flowing through the device, and (3)  the output control is set at maximum, what should you do?

Accepted Answer

A)   Take the unit out of service and send it to engineering for repair.
B)   Inspect the couplant chamber to confirm cleanliness and fill level.
C)   Disassemble the radiofrequency generator and test for electrical leakage.
D)   Hook it up the chamber inlet to a flowmeter set at 10 L/min or higher.

Question 20

Which of the following mean mass aerodynamic diameter (MMAD)  aerosol suspensions is produced by an ultrasonic nebulizer operated at 1.25 MHz?

Accepted Answer

A)   1 to 2 µm
B)   6 to 10 µm
C)   4 to 6 µm
D)   Less than 1 µm

Exam 38: Humidity and Bland Aerosol Therapy

Which of the following would indicate that administration of a bland water aerosol to a patient with postextubation upper airway edema was having the desired effect? 1) Decreased work of breathing 2) Improved vital signs 3) Decreased stridor or dyspnea 4) Improved O₂ saturation

Correct Answer
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Correct Answer
verified

Which of the following mean mass aerodynamic diameter (MMAD) aerosol suspensions is produced by an ultrasonic nebulizer operated at 1.25 MHz?

Correct Answer
verified

What is the total water output of unheated large-volume jet nebulizers?

Correct Answer
verified

Correct Answer
verified

Which of the following nebulizers uses a piezoelectric transducer to generate liquid particle aerosols?

Correct Answer
verified

Which of the following are components of an ultrasonic nebulizer? 1) Air-entrainment orifice 2) Radiofrequency generator 3) Nebulizer chamber 4) Piezoelectric transducer 5) Blower or fan

Correct Answer
verified

Which of the following are necessary features to look for in selecting a heated humidifier? 1) Water level readily visible 2) Over-temperature protection 3) Auditory and visual alarms 4) Minimal temperature overshoot

Correct Answer
verified

Unheated bubble humidifiers are of limited effectiveness at flows above which of the following?

Correct Answer
verified

An ultrasonic nebulizer is not putting out any mist. After confirming (1) good electrical power supply (cord, plug, and circuit breakers are in good working order) , (2) carrier gas is actually flowing through the device, and (3) the output control is set at maximum, what should you do?

Correct Answer
verified

Correct Answer
verified

In checking a servo-controlled heated-wire humidifier system, you notice that a few drops of condensate tend to form but only near the patient's airway. Based on this observation, what can you conclude?

Correct Answer
verified

What is the primary goal of humidity therapy?

Correct Answer
verified

To protect against obstructed or kinked tubing, simple bubble humidifiers incorporate which of the following?

Correct Answer
verified

What are some potential problems with manually refilled heated humidifier reservoirs? 1) Cross contamination and infection 2) Variable compliance or delivered volume 3) Delivery of dry and/or hot gases

Correct Answer
verified

A physician orders bland water aerosol administration to a patient with a tracheostomy. Which of the following airway devices could you use to meet this goal? 1) Tracheostomy mask 2) Face tent 3) T tube 4) Aerosol mask

Correct Answer
verified

For which of the following patients might you recommend administration of a hypertonic saline aerosol? 1) Acquired immune deficiency syndrome (AIDS) patient with severe pneumonia symptoms 2) Patient with a bypassed upper airway 3) Patient suspected of having tuberculosis

Correct Answer
verified

For which of the following patients would you select a heated humidifier? 1) Patient receiving O₂ through a bypassed upper airway 2) Patient receiving long-term mechanical ventilation 3) Patient receiving O₂ through an oronasal mask

Correct Answer
verified

What are some types of passover humidifiers? 1) Simple reservoir 2) Membrane 3) Wick

Correct Answer
verified

The typical pressure pop-off incorporated into most simple bubble humidifiers releases pressure above which of the following?

Correct Answer
verified

Exam 38: Humidity and Bland Aerosol Therapy

Which of the following would indicate that administration of a bland water aerosol to a patient with postextubation upper airway edema was having the desired effect? 1) Decreased work of breathing 2) Improved vital signs 3) Decreased stridor or dyspnea 4) Improved O2 saturation

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following mean mass aerodynamic diameter (MMAD) aerosol suspensions is produced by an ultrasonic nebulizer operated at 1.25 MHz?

Correct AnswerverifiedShow Answer

What is the total water output of unheated large-volume jet nebulizers?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which of the following nebulizers uses a piezoelectric transducer to generate liquid particle aerosols?

Correct AnswerverifiedShow Answer

Which of the following are components of an ultrasonic nebulizer? 1) Air-entrainment orifice 2) Radiofrequency generator 3) Nebulizer chamber 4) Piezoelectric transducer 5) Blower or fan

Correct AnswerverifiedShow Answer

Which of the following are necessary features to look for in selecting a heated humidifier? 1) Water level readily visible 2) Over-temperature protection 3) Auditory and visual alarms 4) Minimal temperature overshoot

Correct AnswerverifiedShow Answer

Unheated bubble humidifiers are of limited effectiveness at flows above which of the following?

Correct AnswerverifiedShow Answer

An ultrasonic nebulizer is not putting out any mist. After confirming (1) good electrical power supply (cord, plug, and circuit breakers are in good working order) , (2) carrier gas is actually flowing through the device, and (3) the output control is set at maximum, what should you do?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In checking a servo-controlled heated-wire humidifier system, you notice that a few drops of condensate tend to form but only near the patient's airway. Based on this observation, what can you conclude?

Correct AnswerverifiedShow Answer

What is the primary goal of humidity therapy?

Correct AnswerverifiedShow Answer

To protect against obstructed or kinked tubing, simple bubble humidifiers incorporate which of the following?

Correct AnswerverifiedShow Answer

What are some potential problems with manually refilled heated humidifier reservoirs? 1) Cross contamination and infection 2) Variable compliance or delivered volume 3) Delivery of dry and/or hot gases

Correct AnswerverifiedShow Answer

A physician orders bland water aerosol administration to a patient with a tracheostomy. Which of the following airway devices could you use to meet this goal? 1) Tracheostomy mask 2) Face tent 3) T tube 4) Aerosol mask

Correct AnswerverifiedShow Answer

For which of the following patients might you recommend administration of a hypertonic saline aerosol? 1) Acquired immune deficiency syndrome (AIDS) patient with severe pneumonia symptoms 2) Patient with a bypassed upper airway 3) Patient suspected of having tuberculosis

Correct AnswerverifiedShow Answer

For which of the following patients would you select a heated humidifier? 1) Patient receiving O2 through a bypassed upper airway 2) Patient receiving long-term mechanical ventilation 3) Patient receiving O2 through an oronasal mask

Correct AnswerverifiedShow Answer

What are some types of passover humidifiers? 1) Simple reservoir 2) Membrane 3) Wick

Correct AnswerverifiedShow Answer

The typical pressure pop-off incorporated into most simple bubble humidifiers releases pressure above which of the following?

Correct AnswerverifiedShow Answer

Which of the following would indicate that administration of a bland water aerosol to a patient with postextubation upper airway edema was having the desired effect? 1) Decreased work of breathing 2) Improved vital signs 3) Decreased stridor or dyspnea 4) Improved O₂ saturation

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified

For which of the following patients would you select a heated humidifier? 1) Patient receiving O₂ through a bypassed upper airway 2) Patient receiving long-term mechanical ventilation 3) Patient receiving O₂ through an oronasal mask

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified