Oxygen Delivery

Question 1

What does FiO2 mean and what is its natural air equivalent?

Answer 1

fraction of inspired air, 0.2 FiO2 is equal to 20% oxygen in natural air

Question 2

What are the 4 types of low-flow oxygen systems?

Answer 2

nasal canula, simple mask, non-rebreather, partial non-rebreather

Question 3

What are the 2 types of high flow oxygen systems?

Answer 3

venturi mask
aerosol/large volume nebulizer

Question 4

Which oxygen delivery system has a variable FiO2 depending on the oxygen delivery device and the patient’s respiratory/oxygenation needs?

Answer 4

low-flow oxygen system

Question 5

Which oxygen delivery system has devices that meet or exceed the patient’s minute volume or inspiratory demands and they deliver FIXED concentration of oxygen, regardless of inspiratory flow or breathing pattern?

Answer 5

high-flow oxygen system

Question 6

A nasal canula gives ____ L of O2, FiO2 = __, and the fraction of oxygen that is inspired increases by __% for every additional liter of oxygen flow administered (added from 20)

Answer 6

1-6 L, 24-44%, 4%

Question 7

A nasal canula with 1L= ___ FiO2 and 3 L= ___ FiO2

Answer 7

24%, 32%

Question 8

What are some things to be aware of when using a nasal canula?

Answer 8

can dry out mucous membranes so humidify at liter flows greater than 4LPM, change device if you need more than 5LPM, use on patients with adequate tidal volume and normal vital signs

Question 9

A simple mask uses flows from ___ to ___ LO2, and requires a minimum of ___ to flush expired CO2 and prevent rebreathing of CO2

Answer 9

6-10, 6

Question 10

T/F, a minimum of 4 LPM is required to flush out expired CO2 and prevent rebreathing of CO2

Answer 10

false, a minimum of 6 is needed

Question 11

What is the FiO2 range for a simple mask?

Answer 11

25-60%

Question 12

Which oxygen delivery system delivers the greatest amount of oxygen without intubation and what is the L of O2 and FiO2 ranges?

Answer 12

non-rebreather, 10-15L, 80-95% FiO2

Question 13

T/F, a non-rebreather mask is the oxygen transport of choice for long-term use

Answer 13

false, only used for short-term therapy

Question 14

What are the differences between a partial non-rebreather and a rebreather mask?

Answer 14

range is from 8-12 L, 35-60% FiO2, valves allow expired CO2 to leave the mask

Question 15

T/F, a partial non-rebreather mask allows for a high concentration of blood oxygen to occur

Answer 15

false, difficult for high concentration as the reservoir bag becomes diluted of oxygen

Question 16

Which oxygen flow system is used on COPD patients and has different attachments of different colors that indicate the O2 concentration being given?

Answer 16

venturi mask

Question 17

t/f, we want to use ventilators as soon as possible when our patients are struggling to breathe

Answer 17

false, want to avoid it as much as we can

Question 18

What are the 4 reasons to use endotracheal intubation?

Answer 18

1. upper airway obstruction
2. inability to protect the lower airway from aspiration
3. inability to clear secretions from the lower airways
4. need for positive pressure mechanical ventilation

Question 19

What are the parameters you would see on a ventilator screen (7)?

Answer 19

Mode of ventilation
FIO2
PEEP
RR
Tidal volume
Minute Volume
Alarm Settings

Question 20

What mode of ventilation would you choose to use on a pt who is not able to breathe on their own and needs as much assistance as possible (non-weaning mode) and the machine provides a set rate and tidal volume to deliver a minimum minute ventilation?

Answer 20

assist control

Question 21

What mode of ventilation is a weaning mode that is good for respiratory mm exercise that allows for pt to breathe spontaneously b/w ventilator breaths?

Answer 21

SIMV (synchronized intermittent mandatory ventilation)

Question 22

What mode of ventilation is a spontaneous mode that is used for weaning and maintains positive pressure continuously in the airways and pressure support is added to augment pts tidal volume?

Answer 22

CPAP (continuous positive airway pressure)

Question 23

What is positive end-expiratory pressure and why is it important?

Answer 23

positive pressure applied at the end of expiration during ventilation-> ensures that the alveoli won’t collapse

Question 24

Which mode of ventilation only applies to spontaneous breaths and allows the pt to control RR and inspiratory time and helps decrease the work of breathing and allows for more patient comfort?

Answer 24

pressure support ventilation (PSV)

Question 25

T/F, PSV only works while patient breaths on their own

Answer 25

true, if pt stops breathing, then the ventilation ceases