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humidity therapy

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5 Types of Humidifiers
Passover, Diffusion (bubble), Cascade, Wick, Heat and Moisture Exchanger (HME)
Where do you set up the HME
as close to the patient as posible
How much humidity is in the Atmosphere
10mg/L
What 4 factors are needed to troubleshoot humidifiers
getting rid of condensation, check adequate output (temp,) Check safety release valves, maintenance of water
Temperature at which humidifiers are usually set at
32* C-35*C
What type of Humidifier is the Cascade
Heated Humidifier
How does the HME work
It utilizes patient's exhaled gas to warm and humidify each subsequent inspiraion
How does the passover device work
It Blows by- directs gas over a water surface
What negative factor is there for using the HME
It is cost effective
Which type of humidifier is the simplest
The Passover
Which Cascade humidifier works with a manual dial for temperature
cascade I
which of the Humidifiers have a decrease in the risk of infection
wick humidifier, HME
Goal of Humidity Therapy
To ensure that the water vapor content of inspired gases is sufficient to meet the physiologic needs of the patient
2 Factors that make The wick Humidifier a better way to humidify
there is less resistance, less water is needed.
When must molecular water be changed
If not heated every 72 hours, If heated every 24 hrs
3 factors that can alter the efficiency of humidity
Time of contact between gas and water, Temperature, Surface Tension
Name 2 Cascade humidifiers
PB cascade I, PB Cascade II
How do you check if a Diffusion Humidifier is working properly
check pop off
What principle does the Cascade Humidifier work off
Cascading Principle
3 Hazards of Humidity Therapy
Alteration in heat and water xchange, Infection, Electrical Hazards
What problems can arise with the Cascade II Humidifer
It can over heat if not turned off when changing for a treatment on a pt.
How does The Cascade Humidifier work
It allows more time for water contact with the gas
How is the Diffusion Humidifiers set up to deliver O2 to the Patient
With a Nasal Cannula set at a minimum of 4lpm
Which type of humidifier is the most popular
Diffusion Humidifier (Bubble)
Temperature setting for Wick Humidifier
47*C (body temp)
What must be done with the Cascade II Humidifier when changing to a treatment with a pt.
TURN IT OFF.
Negative aspects of the Passover device
increase chance of infection
When using the Cascade Humidifer what is the percentage of Relative Humidity at body temperature
100%
Which Cascade Humidifier works with an automated Temperature controler
cascade II
Another name for a Diffusion Humidifier
Bubble Humidifier
Which 2 types of humidifiers are considered Passovers
Emerson's "Hot Pot" , Wick Humidifier
3 Indications of Humidity Therapy
Humidify dry gas, overcome the humidity deficit created when upper airway is bypassed
What type of humidifier is the wick humidifier
Passover
An example of a Passover device
Emerson "hot pot" Isolette
What is the HME indirectly related to
Respiratory rate and Tidal volume
What is the ideal Realative Humidity while on the HME
70%
How often should the HME device be changed
every 8 hours
What effect does having a larger surface area have on water vapor content
It increases the water vapor content
Purpose of a Diffusion Humidifier
To raise the humidity content of dry oxygen to acceptable levels
Type of humidifier also known as Artifical Nose
HME
6 Clinical Indications of Humidity Deficit
Dry Hacking Cough, Thickened Secretions, Substernal Pain, Sore Throat, Dry Skin, Fluid Imbalance
Type of humidifier used more widely
Heat & Moisture Exchange (HME)
What are the 2 positive factors for using the HME
It has less maintenace, and technically has less chance of infection

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