high flow oxygen systems

Question 1

Cold neb

Answer 1

large volume neb
has a venturi system
O2 drives system and some ratio of air is entrained- the FiO2 is set by entrainment port not the flow meter.
(not use as often because of droplets, risk infection)

Question 2

T-piece

Answer 2

tracheostomy tube
composed of a reservoir tube on one side and a flexible tubing for O2 source.
heated + humidified

Question 3

Air entraintment mask

Answer 3

uses the venturi and bernouilli effect principle, as gas velocity increases, lateral pressure decreases and this allows atmospheric gas to be drawn in. (jet size controls velocity). the smaller the orifice the higher the FIO2.

Question 4

Optiflow

Answer 4

is heated and humidified high flow system
capable of flows from 0-60 lpm
provides some PEEP to the patient
humidifier is set to 37 degrees.

Question 5

vapotherm

Answer 5

flow range 5-40 lpm

fiO2 21%-100%