Different types of oxygen therapy

Question 1

examples of oxygen delivery devices

Answer 1

Nasal cannula 
Hudson mask
Venturi mask 
Non-rebreather mask 
Non-invasive ventilation 
invasive ventilation

Question 2

what does a nasal cannula deliver?

Answer 2

delivers 24-30%

Question 3

flow rate of nasal cannula

Answer 3

1-4L/min

Question 4

use of nasal cannulas

Answer 4

non-acute ward use
if someone is mildly hypoxic
comfortable

Question 5

hudson mask delivery

Answer 5

30-40%

Question 6

flow rate of hudson mask delivery

Answer 6

5-10L/min

Question 7

uses for hudson mask

Answer 7

step up from nasal cannula

doesn’t deliver specific % of oxygen like venturi

Question 8

what is the oxygen delivery of venturi mask?

Answer 8

24-60%

Question 9

what is the flow rate of venturi mask?

Answer 9

different flow rates set on O2 wall tap

different types

Question 10

what are the different types of venturi mask?

Answer 10

blue
white
yellow
red
green

Question 11

blue venturi mask

Answer 11

2-4L/min

24% O2

Question 12

white venturi mask

Answer 12

4-6L/min

28% oxygen

Question 13

yellow venturi mask

Answer 13

8-10L/min

35% oxygen

Question 14

red venturi mask

Answer 14

10-12L/min

40% oxygen

Question 15

green venturi mask

Answer 15

12-15L/min

60% oxygen

Question 16

uses of venturi mask

Answer 16

COPD

Question 17

non-rebreather mask oxygen delivery

Answer 17

85-90%

Question 18

non-rebreather mask flow rate

Answer 18

15L

Question 19

how does a non-rebreather mask work?

Answer 19

bag on mask with valves stops almost all rebreathing

Question 20

use of non-rebreather mask

Answer 20

acutely unwell patients

Question 21

non-invasive ventilation

Answer 21

CPAP

BiPAP

Question 22

CPAP

Answer 22

continuous positive airway pressure
high pressure air/oxygen with a tight fitting mask
positive pressure all the time

Question 23

use of CPAP

Answer 23

keeps airways open in sleep apnoea or heart failure

Question 24

BiPAP

Answer 24

bilevel positive airway pressure

high positive pressure on inspiration and lower positive press on expiration

Question 25

use of BiPAP

Answer 25

COPD and atelectasis

Question 26

invasive ventilation

Answer 26

100%

ventilation bag or machine is attached to an artificial airway to ventilate lungs

Question 27

when is invasive ventilation used?

Answer 27

intensive care and theatre

Question 28

when to intubate?

Answer 28

if GCS is less than or equal to 8

Question 29

what oxygen saturation level is problematic?

Answer 29

below 90%

Question 30

when to do ABG?

Answer 30

anyone with oxygen saturations of <92%

Question 31

humidified oxygen

Answer 31

can help with secretions and useful if prolonged oxygen therapy is required

Question 32

what causes CO2 retention?

Answer 32

COPD
bronchiectasis
CF
neuromuscular disease 
severe kyphoscoliosis 
severe obesity

Question 33

treating CO2 retainers

Answer 33

start on 24-28% venturi mask if no ABG results

give high flow oxygen if they are in respiratory distress or dangerously hypoxic

Question 34

hypoxia with hypercapnia

Answer 34

hypoxic drive likely so give 24-28% venturi mask

Question 35

hypoxia without hypercapnia

Answer 35

hypoxic drive unlikely

can try higher flow rate of oxygen

Question 36

hypercapnia and acidosis worsening

Answer 36

reduce oxygen and consider non-invasive ventilation if oxygen levels stay dangerously low

Question 37

hypercapnia and acidosis stable/improving

Answer 37

scope to increase oxygen

Question 38

if sats of 88-92% cannot be reached in CO2 retainers

Answer 38

if this cannot maintained without decreased respiratory drive and causing hypercapnic acidosis then non-invasive ventilation needed