Oxygen Administration

Question 1

Hypoxemia

Answer 1

Low oxygen in the blood

Question 2

Hypoxia

Answer 2

Low oxygen in the tissues

Question 3

Signs of Hypoxemia

Answer 3

Increased rapid pulse
Rapid shallow respiration and dyspnea
Increased restlessness and lightheadedness
Flaring of the nares
Substernal or intercostal retractions
Cyanosis

Question 4

Indications for use of oxygen

Answer 4

Decreased alveolar oxygen

Hypoxemia causes increased work of breathing

Hypoxemia causes increased workload of the heart

Question 4

Categories of Oxygen Delivery System

Answer 4

High flow system
Low flow system

Question 5

Categories of Oxygen Delivery System

Those that can meet all the respiratory demands and can deliver a consistent flow rate

Answer 5

High Flow System

Question 6

Examples of high flow system

Answer 6

Venturi mask
Non-rebreathing mask
Aerosol mask
T-pieces

Question 7

Categories of Oxygen Delivery System

Do not meet the inspiratory demand and do not room air with a flow of oxygen into a reservoir

Answer 7

Low Flow System

Question 8

Examples of low flow system

Answer 8

Nasal cannula
Partial rebreathing mask
Tracheostomy collar

Question 9

FiO2

Answer 9

Fraction of Inspired Oxygen

Question 10

A cone shaped adaptor that serves as a mixing valve to control the amount of oxygen and room air that flows through the mask

FIO2 = 24-50%

Answer 10

Venturi Mask

Question 11

This is very useful for patients with chronic lung disease

Nursing responsibilities:
Ensure that flow is set at the rate specified to deliver the FIO2 desired

Answer 11

Venturi Mask

Question 12

it is open at the top and is held in place with an elastic band around the head

FIO2 = 8-12%

Answer 12

Face tent

Question 12

Open plastic mask that fits under the chin

FIO2 = 8-12%

Answer 12

Face tent

Question 13

It is less reliable than a face mask for delivering precise FIO2 levels

Does allow moderate to high density aerosol for humidification

Answer 13

Face tent

Question 14

Patients who feel claustrophobic in a face mask often tolerate a face tent

Answer 14

Face tent

Question 15

Nursing responsibilities
Check the skin over the ears where the mask strap rubs

Answer 15

Face tent

Question 16

Uses the reservoir bag to capture some exhaled gas for rebreathing

FIO2 = 6-15L/min | 50-90%

Answer 16

Partial Rebreather Mask

Question 17

Allows higher FIO2 levels to be delivered

FIO2 is collected in the reservoir bag for inhalation

Answer 17

Partial Rebreather Mask

Question 18

Exhalation ports allow most exhaled air to escape

Several types are available

Answer 18

Partial Rebreather Mask

Question 19

Can deliver FIO2 above 50% at flow rates of 6-15L/min

Patient rebreathes some exhaled air along with oxygen

Answer 19

Partial Rebreather Mask

Question 20

Nursing Responsibilities

Maintain the flow rate at a high enough rate to prevent the reservoir bag from collapsing during inhalation

Answer 20

Partial Rebreather Mask

Question 21

A small, cup-shaped device that fits over the tracheostomy opening and is held in place with elastic straps around the neck

FIO2 = 4-10/min | 24-100%

Answer 21

Tracheostomy Collar

Question 22

It is possible to deliver both high FIO2 and high humidity

Answer 22

Tracheostomy Collar

Question 23

Nursing responsibilities

Watch for water accumulation in the tubing

Answer 23

Tracheostomy Collar

Question 24

Types of Oxygen Administration

Answer 24

Cannula
Face mask
Face tent

Question 25

Signs of Oxygen Toxicity

Answer 25

Changes in vision and hearing
Anxiety
Nausea
Vomiting
Loss of consciousness
Convulsions