Question 1

Which of the following will correct the problem of tubing condensation within the ventilator circuit?

Accepted Answer

A)  Water traps 
B)  Increase the room temperature 
C)  Hot-wire circuit 
D)  Both A and C 
A)  Water traps 
B)  Increase the room temperature 
C)  Hot-wire circuit 
D)  Both A and C D

Question 2

Condensation will form in large-bore corrugated tubing during the delivery of bland aerosol because the:

Accepted Answer

A)  gas is warmed by ambient air. 
B)  corrugated tubing is too short. 
C)  gas is cooled by ambient air. 
D)  particles are susceptible to gravity. 
A)  gas is warmed by ambient air. 
B)  corrugated tubing is too short. 
C)  gas is cooled by ambient air. 
D)  particles are susceptible to gravity. D

Question 3

Which of the following is true about the physiologic control of heat and moisture exchange by the body?

Accepted Answer

A)  The nose, oropharynx, and hypopharynx add heat and humidity during exhalation. 
B)  The nose, oropharynx, and hypopharynx cool gas and reclaim water during inhalation. 
C)  The inability of the nasal mucosa to reabsorb excessive amounts of exhaled condensation in cold weather causes a "runny nose." 
D)  The mouth is more efficient at reclaiming heat and water during exhalation than is the nose. 
A)  The nose, oropharynx, and hypopharynx add heat and humidity during exhalation. 
B)  The nose, oropharynx, and hypopharynx cool gas and reclaim water during inhalation. 
C)  The inability of the nasal mucosa to reabsorb excessive amounts of exhaled condensation in cold weather causes a "runny nose." 
D)  The mouth is more efficient at reclaiming heat and water during exhalation than is the nose. C

Question 4

A low-flow bubble humidifier is running at 4 L/min and is not whistling.Which action should be taken at this time?

Accepted Answer

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. 
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 5

If its relative humidity is 50% and its absolute humidity is 16 mg H₂O/L,the water vapor capacity of a gas is _____ mg H₂O/L.

Accepted Answer

A)  0.8 
B)  3.2 
C)  8 
D)  32 
A)  0.8 
B)  3.2 
C)  8 
D)  32

Question 6

A patient with subglottic edema might benefit from what type of humidity or aerosol therapy?

Accepted Answer

A)  Continuous heated bland aerosol 
B)  Humidity from a bubble humidifier 
C)  Continuous cold-nebulized bland aerosol 
D)  Dry-powder inhaler with a bronchodilator 
A)  Continuous heated bland aerosol 
B)  Humidity from a bubble humidifier 
C)  Continuous cold-nebulized bland aerosol 
D)  Dry-powder inhaler with a bronchodilator

Question 7

Which of the following statements is true concerning vibrating mesh nebulizers?

Accepted Answer

A)  They require at least 3 mL of solution to produce an aerosol. 
B)  The exit velocity of the aerosol from vibrating mesh nebulizers is rapid. 
C)  They add no gas to the aerosol stream. 
D)  They can produce a particle size range of 1 to 2 mm. 
A)  They require at least 3 mL of solution to produce an aerosol. 
B)  The exit velocity of the aerosol from vibrating mesh nebulizers is rapid. 
C)  They add no gas to the aerosol stream. 
D)  They can produce a particle size range of 1 to 2 mm.

Question 8

The efficiency of a bubble humidifier is affected by which of the following?

Accepted Answer

A)  Gas flow rate 
B)  Operating pressure 
C)  Aerosol production 
D)  Oxygen concentration 
A)  Gas flow rate 
B)  Operating pressure 
C)  Aerosol production 
D)  Oxygen concentration

Question 9

Continuous bland aerosol administration can be hazardous when administered to patients with:
1)asthma.
2)pneumonia.
3)cystic fibrosis.
4)ineffective cough mechanisms.

Accepted Answer

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

Question 10

Appropriate use of an ultrasonic nebulizer will aid which of the following?

Accepted Answer

A)  Ribavirin delivery 
B)  Sputum induction 
C)  Croup tent use 
D)  Pentamidine aerosolization 
A)  Ribavirin delivery 
B)  Sputum induction 
C)  Croup tent use 
D)  Pentamidine aerosolization

Question 11

If the relative humidity of a gas is 55% and the capacity is 18 mg/L,the absolute humidity is _____ mg H₂O/L.

Accepted Answer

A)  10 
B)  12 
C)  22.5 
D)  25.2 
A)  10 
B)  12 
C)  22.5 
D)  25.2

Question 12

A water molecule at the surface contains enough kinetic activity to enter the vapor state.This is the definition of which of the following?

Accepted Answer

A)  Evaporation 
B)  Vaporization 
C)  The boiling point 
D)  The critical point 
A)  Evaporation 
B)  Vaporization 
C)  The boiling point 
D)  The critical point

Question 13

Which of the following is a true statement about the delivery of warm,humidified gas to the lungs?

Accepted Answer

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 contains 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 contains 100% relative humidity and has an absolute humidity level of 36 mg/L to 40 mg/L at 31° C to 35° C. 
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 contains 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 contains 100% relative humidity and has an absolute humidity level of 36 mg/L to 40 mg/L at 31° C to 35° C.

Question 14

A large humidity deficit will cause:

Accepted Answer

A)  a nonproductive cough. 
B)  increased cilia function. 
C)  increased movement of mucus. 
D)  decreased airway resistance. 
A)  a nonproductive cough. 
B)  increased cilia function. 
C)  increased movement of mucus. 
D)  decreased airway resistance.

Question 15

Which of the following devices would be the least effective in reducing a patient's humidity deficit while intubated?

Accepted Answer

A)  A heat and moisture exchanger 
B)  An unheated bubble humidifier 
C)  A wick humidifier set at 35° C 
D)  Heated air-entrainment nebulizer 
A)  A heat and moisture exchanger 
B)  An unheated bubble humidifier 
C)  A wick humidifier set at 35° C 
D)  Heated air-entrainment nebulizer

Question 16

Which of the following treatments would provide sufficient humidity to a conscious patient with a core temperature less than 36° C who had nearly drowned?

Accepted Answer

A)  Heat and moisture exchanger 
B)  Heated aerosol or humidifier 
C)  Heated aerosol with humidifier 
D)  Systemic hydration 
A)  Heat and moisture exchanger 
B)  Heated aerosol or humidifier 
C)  Heated aerosol with humidifier 
D)  Systemic hydration

Question 17

A patient wants to use a spinning disk nebulizer at home.The patient should be aware that it:

Accepted Answer

A)  increases the ambient relative humidity. 
B)  is a mechanical aerosol generator. 
C)  can be a source of bacterial contamination to the environment. 
D)  can deliver 20 mL/min. 
A)  increases the ambient relative humidity. 
B)  is a mechanical aerosol generator. 
C)  can be a source of bacterial contamination to the environment. 
D)  can deliver 20 mL/min.

Question 18

Which of the following represent the immediate signs and symptoms of a patient experiencing bronchospasm during the administration of a bland aerosol?
1)Percentage of forced expiratory volume in 1 second (%FEV₁)<75%
2)Adventitious breath sounds
3)Increased work of breathing
4)Change of breathing pattern

Accepted Answer

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

Question 19

Which of the following statements about humidifiers is appropriate?

Accepted Answer

A)  The warmer the gas, the less water vapor it can hold. 
B)  Evaporation occurs more rapidly with a large water-to-gas surface area. 
C)  High peak flows improve the efficacy of a humidifier. 
D)  The mass of the water is inversely proportional to its capacity to transfer heat. 
A)  The warmer the gas, the less water vapor it can hold. 
B)  Evaporation occurs more rapidly with a large water-to-gas surface area. 
C)  High peak flows improve the efficacy of a humidifier. 
D)  The mass of the water is inversely proportional to its capacity to transfer heat.

Question 20

The respiratory therapist needs to deliver a bland aerosol to a 24-month-old child through a spinning disk device.The appropriate flow setting is ___ L/min to ___ L/min.

Accepted Answer

A)  3; 5 
B)  6; 8 
C)  10; 15 
D)  20; 22 
A)  3; 5 
B)  6; 8 
C)  10; 15 
D)  20; 22

Which of the following will correct the problem of tubing condensation within the ventilator circuit?

Condensation will form in large-bore corrugated tubing during the delivery of bland aerosol because the:

Which of the following is true about the physiologic control of heat and moisture exchange by the body?

A low-flow bubble humidifier is running at 4 L/min and is not whistling.Which action should be taken at this time?

If its relative humidity is 50% and its absolute humidity is 16 mg H₂O/L,the water vapor capacity of a gas is _____ mg H₂O/L.

A patient with subglottic edema might benefit from what type of humidity or aerosol therapy?

Which of the following statements is true concerning vibrating mesh nebulizers?

The efficiency of a bubble humidifier is affected by which of the following?

Continuous bland aerosol administration can be hazardous when administered to patients with: 1)asthma. 2)pneumonia. 3)cystic fibrosis. 4)ineffective cough mechanisms.

Appropriate use of an ultrasonic nebulizer will aid which of the following?

If the relative humidity of a gas is 55% and the capacity is 18 mg/L,the absolute humidity is _____ mg H₂O/L.

A water molecule at the surface contains enough kinetic activity to enter the vapor state.This is the definition of which of the following?

Which of the following is a true statement about the delivery of warm,humidified gas to the lungs?

A large humidity deficit will cause:

Which of the following devices would be the least effective in reducing a patient's humidity deficit while intubated?

Which of the following treatments would provide sufficient humidity to a conscious patient with a core temperature less than 36° C who had nearly drowned?

A patient wants to use a spinning disk nebulizer at home.The patient should be aware that it:

Which of the following statements about humidifiers is appropriate?

The respiratory therapist needs to deliver a bland aerosol to a 24-month-old child through a spinning disk device.The appropriate flow setting is _ L/min to _ L/min.

Basic Physics for the Respiratory Therapist

Principles of Infection Control

Manufacture, Storage, and Transport of Medical Gases

Administering Medical Gases: Regulators, Flowmeters, and

Airway Management Devices and Advanced Cardiac Life Support

Lung Expansion Therapy Devices

Assessment of Pulmonary Function

Assessment of Cardiovascular Function

Blood Gas Monitoring

Sleep Diagnostics

Introduction to Ventilators

Mechanical Ventilators: General-Use Devices

Infant and Pediatric Devices

Transport, Home Care, and Noninvasive Ventilatory Devices

Filters

Exam 6: Humidity and Aerosol Therapy

Which of the following will correct the problem of tubing condensation within the ventilator circuit?

Condensation will form in large-bore corrugated tubing during the delivery of bland aerosol because the:

Which of the following is true about the physiologic control of heat and moisture exchange by the body?

A low-flow bubble humidifier is running at 4 L/min and is not whistling.Which action should be taken at this time?

If its relative humidity is 50% and its absolute humidity is 16 mg H₂O/L,the water vapor capacity of a gas is _____ mg H₂O/L.

A patient with subglottic edema might benefit from what type of humidity or aerosol therapy?

Which of the following statements is true concerning vibrating mesh nebulizers?

The efficiency of a bubble humidifier is affected by which of the following?

Continuous bland aerosol administration can be hazardous when administered to patients with: 1)asthma. 2)pneumonia. 3)cystic fibrosis. 4)ineffective cough mechanisms.

Appropriate use of an ultrasonic nebulizer will aid which of the following?

If the relative humidity of a gas is 55% and the capacity is 18 mg/L,the absolute humidity is _____ mg H₂O/L.

A water molecule at the surface contains enough kinetic activity to enter the vapor state.This is the definition of which of the following?

Which of the following is a true statement about the delivery of warm,humidified gas to the lungs?

A large humidity deficit will cause:

Which of the following devices would be the least effective in reducing a patient's humidity deficit while intubated?

Which of the following treatments would provide sufficient humidity to a conscious patient with a core temperature less than 36° C who had nearly drowned?

A patient wants to use a spinning disk nebulizer at home.The patient should be aware that it:

Which of the following statements about humidifiers is appropriate?

The respiratory therapist needs to deliver a bland aerosol to a 24-month-old child through a spinning disk device.The appropriate flow setting is ___ L/min to ___ L/min.

Basic Physics for the Respiratory Therapist

Principles of Infection Control

Manufacture, Storage, and Transport of Medical Gases

Administering Medical Gases: Regulators, Flowmeters, and

Airway Management Devices and Advanced Cardiac Life Support

Lung Expansion Therapy Devices

Assessment of Pulmonary Function

Assessment of Cardiovascular Function

Blood Gas Monitoring

Sleep Diagnostics

Introduction to Ventilators

Mechanical Ventilators: General-Use Devices

Infant and Pediatric Devices

Transport, Home Care, and Noninvasive Ventilatory Devices

Filters

The respiratory therapist needs to deliver a bland aerosol to a 24-month-old child through a spinning disk device.The appropriate flow setting is _ L/min to _ L/min.