Term
A device that adds molecular water to gas is called a (an)
A) Humidifier
B) Inhaler
C) Nebulizer
D) Respirator |
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Definition
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Term
This device is used to generate and disperse small particles of water to provide additional water content.
A) Humidifier
B) Inhaler
C) Nebulizer
D) Respirator |
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Definition
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Term
Normal ambient humidity is
A) 5 mg/L
B) 10 mg/L
C) 15 mg/L
D) 20 mg/L |
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Definition
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Term
Why are cool humidified gases used to treat upper airway inflammation caused by croup and swelling resulting from extubation?
A) Cold temperatures increase condensation.
B) Cold temperatires lower the risk of evaporation.
C) Cold gas promotes localized vasoconstriction.
D) Cold gas increases the production of secretions |
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Definition
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Term
The ratio of the amount of water in a volume of air relative to the maximum of water the air could hold at that temperature is known as
A) Evaporation point
B) Humidity
C) Relative humidity
D) Saturation point |
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Definition
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Term
All of the following are contraindications associated with the use of a heat and moisture exchanger EXCEPT
A) Presence of endotracheal or tracheostomy tube
B) Body temperature below 32°C
C) Thick, copious, and bloody secretions
D) Expired tidal volumes of less than 70% of the inspired tidal volume |
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Definition
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Term
Which type of humidifier directs gas over the surface of a body of water and uses a hydrophobic barrier that allows water molecules, but not droplets to cross from the water reservir into the gas stream?
A) Bubble humidifier
B) Jet nebulizer
C) Passover humidifier
D) Passover wick humidifier |
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Definition
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Term
When using a heat and moisture exchanger, the ratio of the humidity of exhaled gas to the humidity returned to the patient by the HME is known as
A) Dead space
B) Efficiency
C) Exchange rate
D) Saturation |
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Definition
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Term
All of the following are indications for bland aerosol administration except
A) Bypassed upper airway
B) COPD
C) Subglottic edema
D) Upper airway edema |
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Definition
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Term
All of the following are questions you should consider when selecting an appropriate humidification device except
A) What source, temperature. and humidity of gas is the patient breathing?
B) What is the rate of inspiratory flow or minute volume?
C) Does the patient have normal or diseased lungs?
D) Where does the gas exit the airway? |
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Definition
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Term
In an aerosol, the velocity at which the aerosol particles fall in air because of gravity is called the
A) neutral velocity
B) inertial impaction
C) low terminal settling velocity
D) forward velocity |
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Definition
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Term
The tendency of an object with mass, once it is in motion, to travel in a straight line is known as
A) Force
B) Gravity
C) Inertia
D) Motion |
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Definition
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Term
A patient holds his breath for at least 10 seconds after inhaling a medication. This increases the time of deposition of the medication through
A) Brownian movement
B) Gravitational sedimentation
C) Inertia
D) Motion |
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Definition
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Term
Which of the following affect the ability of an aerosol to penetrate a patient’s mucous barrier?
I. Particle charge
II. Particle movement
III. Particle size
A) I and II
B) I and III
C) II and III
D) I, II, and III |
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Definition
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Term
Which of the following technical factors affect aerosol delivery by nebulizer?
I. Nose versus mouth breathing
II. Flow powering the nebulizer
III. Fill volume
A) I
B) I and II
C) II and III
D) I, II, and III |
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Definition
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Term
Which of these types of patients might have difficulty using a pressurized metered dose inhaler (pMDI)?
I. Young children
II. Elderly persons
III. Patients in acute distress
A) I
B) I and II
C) II and III
D) I, II, and III |
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Definition
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Term
All of the following are patient-related factors that affect the delivery of aerosols during mechanical ventilation EXCEPT
A) Mechanism of airway obstruction
B) Patient-ventilator synchrony
C) Respiratory rate
D) Severity of airway obstruction |
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Definition
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