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RTH 110 - Unit 10
| Question | Answer |
|---|---|
| For short term vent use or transport | HME aka â Artificial Nose |
| For body level humidity | Wick, pass over ( Large bore tubing) |
| For ambient humidification | Bubble ( Small bore tubbing) |
| 1.Surface area: The water/ gas interface. | The greater the area of contact between water and gas, the more opportunity for evaporation to occur |
| Contact time | The longer the atmosphere is exposed to the water surface, the more moisture can be picked up |
| 3. Temperature | Increasing the temperature will increase the amount of water vapor the air can hold. |
| Gas Flow | Usually the efficiency of a humidifier decreases with increases in gas flow ( turbulence, shorter contact time ) |
| Passover humidifier | Evaporation occurs as air is âpassed overâ the water reservoir âLeast effective in humidifying an artificial airway unless heated âTypically are disposable, large volume |
| Warmed humidifier | Mainly for patients with bypassed upper airways or those on vent support, AIM at 100% body humidity, used for enclosures with neonates Two types : wick and cascade |
| What is the typical setting range for heating systems ? | 35-37 C |
| Hazards of condensation | Disruption of gas flow Potential alerting of FiO Aspiration risk uColonization of bacteria posing a risk of infection |
| Best device to achieve body humidity | Cascade Heated Humidifier |
| What are the factors which determine any humidifiersâ out-put (ability to generate ââââhumidity)? | Surface area , contact time, temperature, and gas flow |
| What are the appropriate equipment choices to use with a bubble style humidifier? | Cannula , simple mask, venti-mask and rebreather ( no humidifier) |
| What is the pressure that would activate the pop off for a simple bubble humidifier? How can we use this to our advantage when checking the patientâs oxygen system? | POP OFF releases at 2 psi or 40 mmHg |
| How often should bubble humidifiers be changed? What information should be labeled on each set up? | Containers and bottles should be labeled with date and time and used within 24 hours of opening |
| Bubble humidifiers restore what percent of relative humidity? | 40-50% |
| Humidity therapy hazards | Alterations of heat/water exchange , infection , electrical, |
| Methods to minimize infection | Sterile replacements every 24 hrs uClose-feed reservoirs uPre-packaged sterile disposable units uDrain condensate AWAY from reservoir |
| How can condensation be minimized ? | Place water traps at low points in circuits, use heated wire circuits |
| Continuous feed system | Does not need to be manually refilled or constantly montitored |
| Reservoir feed system | Has to be constantly monitord and manually refilled |
Created by:
BCJohns
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