Question 1

Bypassing the upper airways due to inhaled gas will cause damage to the respiratory tract. What can be provided to prevent this

Accepted Answer

1. Similar levels of humidity 
2. Similar levels of heat

Question 2

A device thats adds invisible molecular water to gas

Accepted Answer

Humidifier

Question 3

What kind of water does not carry pathogens

Accepted Answer

Vapor

Question 4

What types of water carries Pathogens

Accepted Answer

Aerosols 
Condensation

Question 5

What is the most important factor that effects Humidifier Output

Accepted Answer

Temperature

Question 6

The higher the temperature in a Humidifier, the greater

Accepted Answer

water vapor content of the delivered gas

Question 7

Types of humidifiers delivered through small bore tubing

Accepted Answer

Bubble humidifiers

Question 8

Types of humidifiers delivered through large bore tubing

Accepted Answer

Bubble humidifier (Cascade Humidifier)
Passover
HME

Question 9

What is NOT recommended for use with infants because of the increased mechanical dead space and use of uncuffed ETT

Accepted Answer

HME

Question 10

What captures both heat and moisture from expired gas and returns it to the patient at approx. 70% efficiency?

Accepted Answer

HME

Question 11

What are some common problems with Humidification Systems

Accepted Answer

1. Condensation
2. Cross Contamination
3. Ensuring Proper Conditioning of inspired gas

Question 12

Breathing Circuit Condensate must always be treated as?

Accepted Answer

Infectious waste

Question 13

Bland Aerosol Therapy with Sterile Water or Saline is used to Treat?

Accepted Answer

1. Upper Airway Edema 
2. Overcome Heat and Humidity Deficits in patients with Tracheal Airways
3. Help obtain Sputum Specimens

Question 14

What Nebulizers are used to generate Bland Aerosols

Accepted Answer

1. Large Volume Jet Nebulizers
2. Ultra Sonic Nebulizers

Question 15

What are some common problems with Bland Aerosol Therapy

Accepted Answer

1. Environmental Safety
2. Cross Contamination and Infection 
3. Inadequate Mist Production and Over Hydration
4. Bronchospasm and Noise

Question 16

Humidity is measured by

Accepted Answer

1. Partial Pressure
2. Percentage

Question 17

An Aerosol is defined as

Accepted Answer

Particulate matter suspended in a gas

Question 18

The definition of capacity is

Accepted Answer

The maximum amount of water content a gas can contain at a give temperature

Question 19

Relative Humidity is defined as

Accepted Answer

The actual water content of a gas at a given temperature

Question 20

Water Vapor is defined as

Accepted Answer

Water contained in a gas as vapor

Question 21

You must deliver a maximal amount of humidity to a patients airway; how could this be accomplished using a wick humidifier

Accepted Answer

1. Increase Thermostat to 37 C 
2. Keep water in reservoir at correct level
3. Ensure total flow through humidifier exceeds patient requirements
4. Use water traps or drainage bag in the circuit

Question 22

An advantage of the heated wick humidifier, compared with a bubble humidifier is

Accepted Answer

High flow outputs at high humidity are possible

Question 23

The majority of humidifiers operate using the principle of

Accepted Answer

Evaporation

Question 24

Ways to improve a humidifiers efficiency include

Accepted Answer

1. Increase the temperature
2. Increase the surface area

Question 25

The magnitude of the pressure exerted by water vapor is dependent upon

Accepted Answer

Relative humidity

Question 26

Factors that influence an aerosols deposition in the lungs include

Accepted Answer

1. Particle size
2. Gravity
3. Inertia

Question 27

The piezoelectric crystal in an ultrasonic nebulizer

Accepted Answer

Converts electrical energy to mechanical energy

Question 28

Suitable for use for a patient requiring a simple oxygen mask

Accepted Answer

Bubble humidifier

Question 29

Provide humidified gas for a patient who is intubated; which would be the most appropriate

Accepted Answer

1. Wick humidifier
2. A heated wick humidifier

Question 30

When checking oxygen in a patients room, you hear an audible chirping or whistling sound. The most likely cause is

Accepted Answer

The humidifier pop off

Question 31

Contemporary high output humidifiers employ which of the following in their operation?

Accepted Answer

1. A wick
2. A heater

Question 32

The most common type of humidifier in clinical practice is

Accepted Answer

The bubble humidifier

Question 33

An indication that a heat and moisture exchanger is becoming obstructed would be

Accepted Answer

The patients WOB is increased

Question 34

A heat moisture exchanger should be

Accepted Answer

1. Placed between the ventilator circuit, or oxygen therapy equipment, and the patients airway
2. Used for short term applications (Less than 24 Hours)
3. Monitored for obstruction

Question 35

Which humidifiers would be suitable for use with a mechanical ventilator?

Accepted Answer

1. Fisher and Paykel MR850
2. Hudson RCI Neptune

Question 36

Advantages of Metered Dose Inhalers include

Accepted Answer

1. Small size
2. Ease of use

Question 37

A valved holding chamber when used with an MDI may be helpful

Accepted Answer

To improve the patients coordination and timing

Question 38

When using and MDI, the patient should be instruct to

Accepted Answer

1. Take a slow deep breath
2. Squeeze the MDI shortly after inspiration has begun
3. Hold his or her breath allowing inspiration
4. Exhale passively

Question 39

The most important aspect of using MDI's is

Accepted Answer

Patient instruction

Question 40

Increasing the amplitude of an ultrasonic nebulizer

Accepted Answer

Increases the amount of aerosol output

Humidity and Aerosol

Test questions

Question	Answer
Bypassing the upper airways due to inhaled gas will cause damage to the respiratory tract. What can be provided to prevent this	1. Similar levels of humidity 2. Similar levels of heat
A device thats adds invisible molecular water to gas	Humidifier
What kind of water does not carry pathogens	Vapor
What types of water carries Pathogens	Aerosols Condensation
What is the most important factor that effects Humidifier Output	Temperature
The higher the temperature in a Humidifier, the greater	water vapor content of the delivered gas
Types of humidifiers delivered through small bore tubing	Bubble humidifiers
Types of humidifiers delivered through large bore tubing	Bubble humidifier (Cascade Humidifier) Passover HME
What is NOT recommended for use with infants because of the increased mechanical dead space and use of uncuffed ETT	HME
What captures both heat and moisture from expired gas and returns it to the patient at approx. 70% efficiency?	HME
What are some common problems with Humidification Systems	1. Condensation 2. Cross Contamination 3. Ensuring Proper Conditioning of inspired gas
Breathing Circuit Condensate must always be treated as?	Infectious waste
Bland Aerosol Therapy with Sterile Water or Saline is used to Treat?	1. Upper Airway Edema 2. Overcome Heat and Humidity Deficits in patients with Tracheal Airways 3. Help obtain Sputum Specimens
What Nebulizers are used to generate Bland Aerosols	1. Large Volume Jet Nebulizers 2. Ultra Sonic Nebulizers
What are some common problems with Bland Aerosol Therapy	1. Environmental Safety 2. Cross Contamination and Infection 3. Inadequate Mist Production and Over Hydration 4. Bronchospasm and Noise
Humidity is measured by	1. Partial Pressure 2. Percentage
An Aerosol is defined as	Particulate matter suspended in a gas
The definition of capacity is	The maximum amount of water content a gas can contain at a give temperature
Relative Humidity is defined as	The actual water content of a gas at a given temperature
Water Vapor is defined as	Water contained in a gas as vapor
You must deliver a maximal amount of humidity to a patients airway; how could this be accomplished using a wick humidifier	1. Increase Thermostat to 37 C 2. Keep water in reservoir at correct level 3. Ensure total flow through humidifier exceeds patient requirements 4. Use water traps or drainage bag in the circuit
An advantage of the heated wick humidifier, compared with a bubble humidifier is	High flow outputs at high humidity are possible
The majority of humidifiers operate using the principle of	Evaporation
Ways to improve a humidifiers efficiency include	1. Increase the temperature 2. Increase the surface area
The magnitude of the pressure exerted by water vapor is dependent upon	Relative humidity
Factors that influence an aerosols deposition in the lungs include	1. Particle size 2. Gravity 3. Inertia
The piezoelectric crystal in an ultrasonic nebulizer	Converts electrical energy to mechanical energy
Suitable for use for a patient requiring a simple oxygen mask	Bubble humidifier
Provide humidified gas for a patient who is intubated; which would be the most appropriate	1. Wick humidifier 2. A heated wick humidifier
When checking oxygen in a patients room, you hear an audible chirping or whistling sound. The most likely cause is	The humidifier pop off
Contemporary high output humidifiers employ which of the following in their operation?	1. A wick 2. A heater
The most common type of humidifier in clinical practice is	The bubble humidifier
An indication that a heat and moisture exchanger is becoming obstructed would be	The patients WOB is increased
A heat moisture exchanger should be	1. Placed between the ventilator circuit, or oxygen therapy equipment, and the patients airway 2. Used for short term applications (Less than 24 Hours) 3. Monitored for obstruction
Which humidifiers would be suitable for use with a mechanical ventilator?	1. Fisher and Paykel MR850 2. Hudson RCI Neptune
Advantages of Metered Dose Inhalers include	1. Small size 2. Ease of use
A valved holding chamber when used with an MDI may be helpful	To improve the patients coordination and timing
When using and MDI, the patient should be instruct to	1. Take a slow deep breath 2. Squeeze the MDI shortly after inspiration has begun 3. Hold his or her breath allowing inspiration 4. Exhale passively
The most important aspect of using MDI's is	Patient instruction
Increasing the amplitude of an ultrasonic nebulizer	Increases the amount of aerosol output

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