Humidifiers are devices that ?
Transform liquid into vapor, gaseous water, or molecular water.
What are the 3 types of humidifiers?
-passover.
-bubble.
-HME ( Heat Moisture Exchanger).
What are the types of Passover Humidifers? There’s 3 of them.
-Simple reservoir.
-wick.
Membrane.
The Simple reservoir.
-It directs ___ over the surface of a volume of water.
-Its a simplest way to ___ room air is just an open pan of water.
-gas.
-humidify.
A wick humidifier.
-It is uses an _____ material to ___ the surface area for dry air to interface with heated water.
-absorbent.
-increase.
A membrane type humidifiers.
-Are separate ____ from the ____ stream by means of a hydrophobic membrane.
-water.
-gas.
The Advantages of a Passover Humidifiers are ?
-Maintain saturation at _____ flow rates.
-Add little or no flow ____ to _____ breathing circuits.
-Do not _____ any ____; pose minimal risk for spreading infection.
-high.
-resistance to spontaneous.
-generate any aerosol.
A Wick Humidifier.
-Cylinder of absorbent material. (Increases surface area).
-It is placed in water ___with heating element.
-______ action draws water up from reservoir to keep wick _____.
-____ gas flows around wick picking up heat and _____. And leaving the chamber saturated with water vapor.
-No ____ occurs; No ______ produced.
-reservoir.
-Capillary, saturated.
-Dry, moisture.
-bubbling, aerosol.
Membrane Type.
- Separates ____ from ____ stream by means of hydrophobic ( water heating” )membrane. Have little or no tendency to absorb water, typically having nopolar surface that repels water.
-**Water vapor molecules can easily pass through membrane but ____ water CANNOT.
-water from gas.
-liquid.
Bubble Humidifiers.
- Gas flows down into a reservoir of water through a hollow tube. With a diffusing element at the bottom.
-Diffuser breaks the ___ flow into tiny bubbles.
-As the bubbles ___ to the surface, they pick up ____ by way of _____.
-Most commonly used humidifier for ___ therapy.
-Best for use with nasal cannula. (Cannot be heated).
-factors affecting efficiency and output.
+ Liter flow.
+Ambient _____.
+Time of _____.
** Relief valve: Indicates ____ to flow; protects devices from _____ damage (bursting bottle).
—Bubble Humidifier are simple devices used in respiratory care to add humidity (moisture) —
-gas.
-surface, humidity, evaporation.
- 02 therapy.
-temperature.
-operation.
*obstruction, pressure.
Heat Moisture Exchanger (HME).
-Most often a passive _____ that has been described as an “______ ______”
-Dose not add ___ or ___ to the system.
-It captures exhaled ____ and ____, which is then applied to the _______ inhalation.
-For short term use only (up to ___ hours)
—HME is a device used in respiratory care to warm and humidify a patients inspired air.—
—HME is mainly used to provide humidification to Pt’s receiving
-ventilatory support.
-Via endotracheal tube.
-tracheostomy tubes.
-humidifier.
-artificial nose.
-heat,water.
-heat,moisture, subsequent.
-96 hours.
What are the 3 types of Heat Moisture Exchanger (HME)?
-Simple.
-hygroscopic.
-hydrophobic
Hygroscopic condenser.
-uses a condenser element with low thermal conductivity (Paper,wool,foam) impregnated with a ______ salt.
-Hygroscopic= readily taking up retaining ___.
-___% efficiency (40mg/L exhaled, 27mg/L returned.
— hydroscopic condenser humidifier is a special type of HME. It catches the moisture and heat from the patient’s exhaled breath. hold onto that moisture because it has salt on it. gives that moisture and heat back when the patient inhales.—
-hygroscopic salt.
-Moisture.
70%
The Hydrophobic condenser.
-Uses a water ___ element with a larger surface area and low thermal conductivity.
-Efficiency ___%
— a hydrophobic condenser humidifier is a type of HME that uses a water repelling filter to trap heat and moisture from the patient breath and then return it on the next inhalation.
— hydrophobic is water heating the filter, repels water, so moisture forms droplets on its surface a condenser collects water, the moisture from exhaled air condensers on the filter and HME returns heat and moisture, when the patient inhales and then the air picks up and the heat and the moisture that was stored on the filter.—
- repellant.
-70%
Heated Systems .
-Heat improves _____ output.
-Primarily for ______ airways.
-Risk of airway ____.
-Humidifier
-bypassed
(The normal upper airway (nose, mouth, throat,) is skipped. The air goes directly into the Trachea/lungs through a tube.)
-burns.
( heat humidifier can cover heat if the temperature becomes too high. It can cause injury to the airway a.k.a. airway burns.)
The 5 types of heating elements.
-____ ____ elements at base of humidifier.
- ______ type that surrounds the humidifier chamber.
-___ or collar element that sits between the water reservoir and the gas outlet.
- _____ type heater, with the element placed in the water reservoir.
-Heated ___ on the inspiratory limb.
-Hot plate
-Wraparound
-Yolk
-Immersion
-Wire
Servo - Controlled heating element.
- in a humidifier heating unit the monitors the temperature of gas delivered to the patient, adjusting the power to the heater based on the difference between the temperature setting and the temperature monitored by a thermistor probe placed downstream from the humidifier at or near the patient airway connection.
Servo- controlled heating element.
- Monitors ______ at o near he pt’s airway using a thermistor probe.
-Controlled adjusts heater power to achieve ____airway temperature.
-Rule of thumb: Place thermistor probe in ____limb far enough away from pt wye to ensure that warm, ___ gas does not fool the controller system.
Egan’s: For an intubated pt set temp at 33+ -2C with minimum of 30mg/L water vapor; depends on patient condition. NEVER exceed ____C.
-Temperature.
- desired.
-inspiratory, exhaled.
-37C.
Reservoir and Feed System.
-Heated Humidifiers can evaporate more than ___ L/day.
-To avoid constant refilling, the devices use:
-Large water reservoir, manually refilled with _____ water; at risk for cross - contamination.
- Gravity fed ___ bag and ____
-1L/day
-sterile
-Gravity fed IV bag and line
(Gravity bed systems are important because they provide a simple reliable power freeway to deliver fluids or medication’s using gravity making them essential emergencies.)
*** Problem solving / trouble shooting.
-Condensation: Rain out; as gas cools water vapor capacity _____.
(When water vapor(gas) turns into liquid water).
-Factors that affect condensation.
-Temperature difference between ____ and ____.
-Ambient temperature.
-Gas flow.
-Set airway ____.
-Length, diameter and thermal mass of breathing ____.
-decreases
-Humidifier and airways.
-temperature.
-circuit .
Problems with condensation.
-Occlusion ( blockage or obstruction) of gas flow through circuit will alter FIO2 and/or vent function (FiO2 increases)
-Aspiration to the patient, water in tubing can be shifted into pt airway.
-Infection- condensation is breeding ground for infectious bacteria in circuits.
Minimizing congestion.
-Keep water traps at low points In circuit.
- Maintain appropriate temperature in circuit.
Cross-Contamination: Bacterial growth in circuit.
-Do not drain water from circuit back into humidifier.
-Position circuit to drain condensate away from patient to avoid aspiration.
-Keep changing of circuits to a minimum; FREQUENT changing can INCREASE risk of INFECTION.
-Rule of thumb: drain away from patients airway, wear goggles and gloves, dipole of according to hospital policy.
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Medical Gas Therapy (HBO and Special Gases)27
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Aerosol Therapy RC121 / Bland aerosol Therapy83
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Humidifiers23
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IPPB88
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Lung Expansion Therapy47
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From here on out this is the second half of the term0
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Breathing/coughing techniques32
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Chest Percussion, Vibrations and Turning25
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Bronchial Hygiene and CPT57
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CPAP & BIPAP52
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Intubation / Extubation61
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Suctioning and Capnography52
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PFT12
