Oxygen Therapy

Question 1

Nasal cannula flow and FiO2, variable or fixed?

Answer 1

1-6 l/min, 24-45%

variable performance

Question 2

Simple mask flow and FiO2, variable or fixed?

Answer 2

6-10 l/min, 40-60%

variable performance

Question 3

Aerosol mask flow, variable or fixed?

Answer 3

6-8 l/min

variable performance

Question 4

Partial re-breather mask flow and FiO2, variable or fixed?

Answer 4

10-15 l/min, 50-70%

variable performance

Question 5

Non rebreathing flow and FiO2, variable or fixed?

Answer 5

10-15 l/min, 70-90%
variable performance
*ensure bag is atlas 50% inflated during inspiration and inflated before you put it on

Question 6

why is at least 6 l/min needed with simple mask?

Answer 6

To clear out the CO2 (prevent rebreathing)

Question 7

Define “low flow device”

Answer 7

when the device flow is less than the patient’s inspiratory demand, thus FiO2 will be variable

Question 8

Define” high flow device”

Answer 8

when the device flow is greater than or equal to the patient’s inspiratory flow demand, thus FiO2 will be fixed

Question 9

LVN flow, FiO2, variable or fixed?

Answer 9

15 l/min to flush, 33-100%, fixed

Question 10

Optiflow flow, FiO2, variable or fixed?

Answer 10

20-60 l/min, 35-100%, fixed

Question 11

Airvo flow, FiO2, variable or fixed?

Answer 11

20-60 l/min, 21-95%, fixed