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What are the 4 types of oxygen delivery devices?
- - nasal prong/ nasal cannulae
- - simple oxygen mask- hudson mark
- - venturi masks/ fixed performance masks/ multi resistor masks
- - non rebreather/ reservoir bag mask
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Oxygen in hospitals
- - anthing to do with oxygen is white 100% O2
- - anything to do with air is black with 21% O2
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Describe the process of the use of nasal prongs
- - goes into your nose
- - cannot tell how much O2 pt getting (24-28%)
- - amount of O2 pt gets determined by
- - flow rate (doesnt change %)
- - inspiratory flow rate (about 7-8L/ min)
- - usually 2-4L/min (what it is put on)
- - does dry your nose out- can make it bleed
- - cannot deliver 100% this way!
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Describe the process of simple oxygen mask- hudson mask
- - if we want to deliver more oxygen
- - 6-10L/ min- higher flow rate than nasal prongs
- - if flow rate is too high it will fog up the mask, which means the gas you are breathing out is stayiing in the mask = you breathing in high CO2
- - FiO2- unknown but higher than nasal prongs
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Describe the process of venturi masks/ fixed performance mask/ multi resistor masks
- - nipple bit has extremely narow hole in it and the size of hole- allows you to determine how much air is sucked in (has holes on the side)
- LPM (litres per min) - has percentage- 24, 26, 28, 30, 35, 40, 50
- - accurate system of delivery
- -each nipple determines how much O2
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Describe the process of the non rebreather/ reservoir bag mask.
- - flow rate fast enough pushes air out can't breath room air
- - highest concentration without sealed mask we use this
- - turn up as for as it will go
- - 100% O2 in the bag
- - 15L/min
- - when pt breaths in get 15L/min fom device and extra from bag
- - getting small amount of room air
- - people say 60-70%
- -you need to think of flow rate and fraction that by what is being taken in L/min
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Nebulisor mask
- - gas through liquid to make into aerosol gas- small hole- gas goes through really fast
- - bronchoconstrictor
- - ventalin
- - beta agonist sympathetic drugs
- - needs to be high enough but not too high
- - if gurgles not high enough
- - have to be upright
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