O2 therapy

Question 1

Principles of O2 therapy

Answer 1

• for permeant or prevention of hypoxia (insufficient oxygen to meet metabolic demand or tissues)
• promotion of lung expansion & allowing mobility or secretions for oxygen demands
• various diseases (pneumonia, bronchitis COPD)
• treat as medication
• dangerous side effects ( Atelectasis, toxicity)
• monitory
• o2 is dry, so humidifiers moisten the O2, prevent mucous membranes from drying & becoming irritated, help to loosen secretions

Question 2

When should you humidify

Answer 2

when oxygen rate is above 4L/min

Question 3

Safety alert

Answer 3

• smoking not permited
• ensure electrical equiptment function
• locate fire extinguishes & procedure
• check o2 level or tank before transporting

Question 4

Explain low flow

Answer 4

• nasal cannulas, simple face mask, reservoir mask

- provide o2 in concentrations that vary with the patients respiratory patten

Question 5

explain high flow

Answer 5

• deliver o2 above normal inspiratory rate
• provide a fixed fraction of inspired oxygen regardless of breathing pattern
• venturi mask

Question 6

Nasal cannula

Answer 6

• low flow decive

- for o2 at 1-6L/min with 22-44%

Question 7

Oxygen mask

Answer 7

• low flow device
• delivery of 5-8L. with 40-60%
• containdicated for carbon dioxide retentions

Question 8

Partial rebreathing & non-rebreathing mask

Answer 8

• low flow devices with a reservoir bag
• PARTIAL REBREATHER = O2 max 10L/min with 40-70%
• NON REBREATHER = 60-80% with max flow 10L bag mist stay inflated

Question 9

Venturi mask

Answer 9

-high flow device delivers oxygen at 4-12L/min
with 24-60% concentration
-entrains room air to achieve a consistent concetration
-helpful for COPD for low constant air

Question 10

What do you need to know first

Answer 10

• check prescribers order
• know normal vitals
• check history
• assess for signs & symptoms of hypoxia
• Tachycardia, tachypnea, restless, dyspnea, pallor, confusion.
• sudden vital sign changes, consciousness, behaviour
• airway secretion & patently of nares

Question 11

Advantages of nasal canal & disadvantages

Answer 11

Most common, inexpensive, easy to apply, eat & tock

• FiO2 will vary
• 2-6 laters of oxygen per minute
• disadvantages = over 4L can be dying

Question 12

When should you check cannula & mask

Answer 12

every 8 hours

-look for skin breakdown

Question 13

Home oxygen therapy

Answer 13

• spO2 less than 88% on room air at rest, on exertion or with exercise
• client adjusts
• interdisciplinary

Question 14

Decreased hb reduce

Answer 14

CO2 from cells & O2 to cells

Question 15

What affect oxygenation

Answer 15

pain & anxiety

Question 16

supplemental O2 is only effective

Answer 16

with an effective airway

Question 17

Nasal canula L & percents

Answer 17

1-2L = 24-28%
3-4L = 32-36% 
5-6L = 40-44%

Question 18

Simple mask & L & %

Answer 18

5-6L = 40% 
6-7L = 50%
7-8L = 60%

Question 19

venturi mask & L & %

Answer 19

4L = 24-248%
8L = 35-40% 
12L = 50-60%

Question 20

will O2 spontaneously explode

Answer 20

no

Question 21

Compression gas Cylinder

Answer 21

Used for exercise or sleep only
-100% o2, inexpensive, no loss of gas with storage, portable up to 15L/min
Disadvantages: bulky. unsightly, freq. refill

Question 22

Compressed gas

Answer 22

• portable
• 1-5hr
• only last a few hours not good for sole source

Question 23

Liquid O2 system

Answer 23

use with active.
100% refillable
6L/min
evaporates if not used or frostbite

Question 24

Oxygenconcentrators

Answer 24

stationary for low flow with not much mobility

• large source
• inexpensive
• 1-5L/min
• need power & % decreases as literals flow increases

Question 25

Could cardiac arrest result from hypoxia?

Answer 25

yes, permanent heart & brain damage within 4-6mins

Question 26

Is hydration importance

Answer 26

yesss