Ch.15 Oxygen

Question 1

What is Oxygen?

Answer 1

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

Question 2

Is oxygen flammable?

Answer 2

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

Question 3

What is hypoxemia?

Answer 3

Decreased oxygen tension (concentration) in the blood.

Question 4

How does homeostasis and oxygen relate?

Answer 4

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.

Question 5

What are indications for oxygen therapy?

Answer 5

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))

Question 6

What is hypoxia?

Answer 6

inadequate amount of o2 at the cellular (tissue) level

Question 7

What are symptoms of hypoxia?

Answer 7

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

Question 8

Who can administer oxygen?

Answer 8

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

Question 9

What is the goal of oxygen therapy?

Answer 9

to maintain adequate tissue oxygenation while maintaining the cardiopulmonary work

Question 10

What are the types of oxygen devices?

Answer 10

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

Question 11

What is a pulse dose?

Answer 11

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

Question 12

What is a demand device?

Answer 12

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

Question 13

What are the types of low flow oxygen devices?

Answer 13

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

Question 14

Describe a nasal cannula

Answer 14

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

Question 15

Describe a Simple O2 mask

Answer 15

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

Question 16

Describe a Non-rebreathing mask

Answer 16

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

Question 17

What are the types of High flow oxygen devices?

Answer 17

nebulizer, air entrapment mask

Question 18

Describe a Nebulizer

Answer 18

• 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

Question 19

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

Answer 19

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

Question 20

Describe the air entrapment mask

Answer 20

• 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

Question 21

What oxygen devices are used in pediatrics?

Answer 21

oxyhood and oxygen tent

Question 22

What is an oxyhood?

Answer 22

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

• less than or = to 7LPM
• 21-100% O2

Question 23

What is an oxygen tent?

Answer 23

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

Question 24

What is a ventilator?

Answer 24

• 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