Ch.15 Oxygen Flashcards Preview

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Flashcards in Ch.15 Oxygen Deck (24)
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1
Q

What is Oxygen?

A

a colorless, tasteless, odorless gas that plays a critical rolw in efficient cellular metabolism

2
Q

Is oxygen flammable?

A

No, it does however support combustion and constitutes 21% of atmospheric gas

3
Q

What is hypoxemia?

A

Decreased oxygen tension (concentration) in the blood.

4
Q

How does homeostasis and oxygen relate?

A

When O2 levels become low the metabolic rate is compromised and the pt’s homeostasis is altered. Accordingly the pt’s cardiopulmonary system has to adapt to maintain homeostasis.

5
Q

What are indications for oxygen therapy?

A

the primary clinical indications are to correct hypoxemia or possible tissue hypoxia, also to minimize increased cardiopulmonary workload (increased heart rate, BP, and respiratory rate))

6
Q

What is hypoxia?

A

inadequate amount of o2 at the cellular (tissue) level

7
Q

What are symptoms of hypoxia?

A

shortness of breath, work harder to breath, increased heart rate, high bp, larger depth of breathing

8
Q

Who can administer oxygen?

A

It is a drug and must be prescribed by a physician according to the Federal Food, Drug and Cosmetic Act of 1962

9
Q

What is the goal of oxygen therapy?

A

to maintain adequate tissue oxygenation while maintaining the cardiopulmonary work

10
Q

What are the types of oxygen devices?

A

oxygen flowmeter, pressure manometer, low flow devices, high flow devices

11
Q

What is a pulse dose?

A

delivers a fixed volume of o2 supply during breathing, based on a pt’s rate of breathing, delivered during inspiration

12
Q

What is a demand device?

A

a variable volume of o2 dose- delivered duringlength of pt’s inspiration

13
Q

What are the types of low flow oxygen devices?

A

Nasal cannula- Simple O2 mask- Rebreathing mask- Non-rebreathing mask

14
Q

Describe a nasal cannula

A
  • the most popular
  • sits inside nostrils
  • up to 6LPM
  • 24-36% O2
15
Q

Describe a Simple O2 mask

A
  • mask covers pt’s nose and mouth
  • greater than 6LPM
  • 35-50% O2
  • short term O2 therapy
16
Q

Describe a Non-rebreathing mask

A
  • masks with a bag attached
  • one way valve ensure only O2 is being rebreathed
  • no less than 10LPM
  • 60-80% O2
17
Q

What are the types of High flow oxygen devices?

A

nebulizer, air entrapment mask

18
Q

Describe a Nebulizer

A
  • provides an aerosol mist using a aerosol mask, tracheostomy mask, or t-piece adapter
  • at least 8LPM
  • 28-100% O2
  • filled with .45 saline, .9 normal saline, and sterile water
19
Q

What is the most important thing to look out for when using a nebulizer?

A

it is important to make sure that the tubing is down due to the build up of condensation in the corrugated tubing so that it is not aspirated

20
Q

Describe the air entrapment mask

A
  • propels a high velocity of source oxygen through thin tubing to the mask
  • results with room air being drawn into the mask
  • various LPM
  • 24-50% O2
21
Q

What oxygen devices are used in pediatrics?

A

oxyhood and oxygen tent

22
Q

What is an oxyhood?

A

plastic box, used mostly on infants, that fits over the head to deliver 02

  • less than or = to 7LPM
  • 21-100% O2
23
Q

What is an oxygen tent?

A
  • covers the child’s bed
  • 8-12 LPM
  • 40-50% 02
24
Q

What is a ventilator?

A
  • used when a pt’s cardiopulmonary system in unable to supply adequate oxygen to the tissues
  • pt may have an artificial airway inserted into the trachea which is then attached to the ventilator
  • delivers a consistent Fi02