A small device that traps heat and moisture of inspired air as the patient inhales and exhales - Is often used on mechanical ventilators and is called the "artificial nose."
What is a "HME" or Heat Moisture Exchanger
100
The isothermic saturation boundary (ISB) is located:
What is 5 cm below the carina.
100
Absolute humidity is measured in:
What is Grams per cubic meter or mg/L
100
The comparison of the of the actual content of water vapor in a gas, to the amount it could hold if it were 100% saturated
What is Relative Humidity
100
The general goals of aerosol and humidity therapy are:
What is to aid in bronchial hygene, humidification of inspired gas, and deliver medications.
200
This device is used primarily to humidify low flow nasal oxygen
What is a bubble humidifier
200
A gas at body temperature and pressure saturated (BTPS) has a water vapor pressure of:
What is 47 mmHg
200
The definition of absolute humidity is:
What is the actual content or weight of water present in a given volume of gas.
200
Relative humidity is measured in:
What is mg/L
200
Indications for aerosol and humidity therapy include:
High flow oxygen delivery, need for medicine delivery, and bypassed airway
300
This humidifier directs gas over a liquid or a liquid saturated surface....this type of system is called a:
What is a passover humidifier
300
At sea level, a gas at BTPS contains_____mg of water per liter of gas
What is 43.9 mg
300
At a temperature of 27 degrees C, the water vapor pressure would be about (with saturated, surrounding air):
What is 26.7 mm Hg
300
When the AH is held constant, increasing the temperature of a gas will____________to the RH
What is "decrease" the RH
300
Hazards of aerosol therapy include:
What is swelling of dried, retained secretions, bronchospasm, fluid overload, cross contamination.
400
This type of humidifier utilizes a "piezoelectric ceramic transducer" to produce an aerosol
What is an Ultrasonic Nebulizer or USN.
400
The standard temperature at "BTPS" is usually a constant:
What is 37 degrees C
400
How does time affect evaporation and resulting absolute humidity?
What is ...The time that gas is exposed to all of these factors will increase humidity.
400
What is the RH of a gas sample where AH is calculated at 25 mg/L and the actual water content was measured at 14 mg/L?
What is 56% RH
400
Aerosol output is defined as:
What is the mass of fluid or drug produced or emitted by a nebulizer.
500
This device is considered the most commonly used to generate bland aerosols. a "jet" is used to produce an aerosol.
What is a large volume jet nebulizer
500
Below the ISB (Isothermic Saturation Boundary), the RH is usually a standard _____________at 37 degrees C.
What is 100% RH
500
How does the surface area affect evaporation and resulting absolute humidity?
What is...is a direct relationship, as pressure increases the evaporation decreases.
500
What is the RH of a gas when the actual water content was measured at 18 mg/L and the Absolute Humidity was calculated at 27 mg/L at 28 degrees C?
What is 67% RH
500
The specific goal of aerosol therapy is:
What is to deliver a therapeutic dose of a selected agent (drug) to the desired site of action.