RT Clinic: Oxygen therapy via nasal cannula

all right so we'll start with a first

low flow oxygen device which is nasal

cannula a standard a is like a no can

deliver 1 to 6 liters of oxygen and

we'll talk about that certainly what

that kind of converts to in the amount

of oxygen they're actually inspiring or

their fraction aspiring oxygen or fio2

so standard cannula nothing really

special about this first of all it will

plug in the flow meter and that's very

fairly simple you have to have a

Christmas tree as we showed before plug

them right here

I always start the oxygen flow turn the

knob counterclockwise let's go with

three liters here the ball was that

right ml of three liters now I'll show

you how to apply it the patient's face

all right so now I'm going to apply this

to the patient's face you're going to

notice that there is a little bit of a

curvature to these cannula prongs as you

can see it what you want to think about

are these going in and following the

path of the nasal cavity nasal cavity

it's not go up it goes back and around

so these things always curve back like

this if you put them on backwards like

this it's going to oxygenate the

epithelial cells on the inside their

nose but not get down into their oral

pharynx down to lungs where you really

need so curving back I always put in the

nose first a little bit of pressure of

course I'm going to put it on this a

year and then I'm going to show you for

this side how it goes over the ear and

under the chin and then this piece right

here kind of goes tight you don't want

to go too tight with it

just enough to secure it and then

sometimes I do a little bit of

adjustment to what feels best for the

patient one real key don't do it too

tight a lot of the tubing's net is now

made so that's soft because this can

cause some a lot of breakdown

hospital-acquired pressure ulcers

especially on the tops of the ears and

then if it's real tight across the skin

right here this course of skin is very

thin and then right on the nose if this

is pulled really tight and it's not

frequently moved so this salad is like

annulus run of course it's going to go

back into the nasal cavity and it's

going to act almost like a reservoir so

when they take their breath in they'll

pull that fraction of inspired oxygen

our lungs and then exhaling take the

next breath in so this is standard a has

a cannula review one to six liters if

the patient is on greater than 3 years

we recommend cubed a humidifier or what

we call it bubbler and what that does it

just helps to humidify the air so

doesn't dry out their hands let me cosa