What is the FiO2 delivered in the following?

Question

Nasal Prongs

Hudson Mask

Venturi (What are the adjustable percentages)

Partial NRBM

NRBM (Non rebreather mask)

(Then invasive types have adjustable settings so dont worry about these types...)

Thanks is advance - again pls I must stress - if you dont know the above - dont post just to say look it up/etc...

:)

Answer 1

- Nasal Prongs are estimated to delivery a maximum FiO2 of .40 or 40%. They are not appropriate for patients with respiratory distress.

- Venturi Masks The colour of the device reflects the delivered oxygen concentration: 24%: blue; 28%: white; 31%: orange; 35%: yellow; 40%: red; 60%: green.

- Non-rebreather mask delivers only one FiO2: 1.00 ( 100 % )

- Hudson Tracheostomy Mask ( Proper name " Tracheostomy Mask ) has the oxygen flow through the nebulizer very restricted, therefore a special setup is required to administer FiO2 greater than .50. Do remember that constant rainout of humidity in tubing can alter FiO2.

- Aerosol Mask works exactly the same as a Tracheostomy

Mask.

Wish You Best Of Luck !

Answer 2

Hi Peter!

Let me try and answer your queries.

1. Nasal prongs: Cannot measure the FIo2 when we use this , thats why we only talk about flow in litres per min. But we deliver up to 30 %.

2. Hudson mask: Again this is a variable performance mask.This can deliver up to 40% of FIo2.

3.Venturi mask: Can deliver 30% 40% and 50% depending on the flow rates of 10, 12 15 liters per min respectively.

4.NRBM can deliver 80% when both the valves are open,  90% when one of them is open and 100% when both the valves are closed.

Hope you are satisfied with this answer!!