WEEK 6 Oxygen Therapy & Mech Vent

Question 1

Which delivery system has O2 % 24-44 and flow rates of 1-6 L/m?

Answer 1

Nasal cannula

Question 2

Which delivery system conserves & reduces O2 usage by storing O2 in a reservoir during exhalation?

Answer 2

Reservoir nasal cannula

Question 3

Which delivery system is an alternative to conventional O2 therapy with flow rates of 1-15 L/m?

Answer 3

High flow nasal cannula

Question 4

Which delivery system has FiO2 % 30-70 and flow rates of 6-10 L/m?

Answer 4

Simple oxygen mask

Question 5

Which delivery system is a variation of face mask for mouth breathers & facial trauma?

Answer 5

Face tent

Question 6

Which delivery system turns liquid meds into mist for aerosol delivery?

Answer 6

Aerosol mask

Question 7

Which delivery system mixes 100% O2 with entrained ambient air?

Answer 7

Venturi mask (venti-mask)

Question 8

Which delivery system has O2 % 75-100 and flow rates of 8-15 L/m?

Answer 8

Nonrebreathing mask

Question 9

Which delivery system has O2 % 35-60 and fits over a trach tube?

Answer 9

Tracheostomy mask (t-collar)

Question 10

Which delivery system flows up to 60 L/m and provides up to 100% O2?

Answer 10

High flow humidification systems

Question 11

What are the 4 indications of mechanical ventilation?

Answer 11

1. Acute respiratory failure
2. Protection of airway & lung parenchyma
3. Relief of upper airway obstruction
4. Improvement of pulmonary toilet

Question 12

What type of breathing cannot sustain ventilation?

Answer 12

Paradoxical

Question 13

What are the 2 types of artificial airways?

Answer 13

• Endotracheal tube
• Trach

Question 14

What is seen on the ventilator screen for ventilator parameters/settings?

Answer 14

• Mode of vent
• Rate
• Target variable (volume or pressure)
• FiO2
• PEEP

Question 15

What is seen on the vent screen for monitored parameters/patient data?

Answer 15

• Min vent (L/m)
• Resp rate (b/m)
• Tidal volume (ml)
• Peak pressure (cmH2O)
• Mean pressure (cmH2O)

Question 16

What is the range for FiO2?

Answer 16

21-100%

Question 17

What is the range for PEEP?

Answer 17

0-20 cmH2O

Question 18

What is PEEP and why is it important?

Answer 18

Pressure applied by vent at the end of each breath to prevent airways from collapsing

Question 19

What could excessive PEEP lead to?

Answer 19

• Reduced CO
• Impaired systemic O2 delivery

Because if positive pressure is too high, it puts pressure on the vena cava.

Question 20

True or False: Inhaling brings positive pressure.

Answer 20

False

Question 21

What level of PEEP is 3-5 cmH2O?

Answer 21

Low

Question 22

What level of PEEP is 5-15 cmH2O?

Answer 22

Moderate

Question 23

What level of PEEP is greater than 15 cmH2O?

Answer 23

High

Question 24

What are the 3 traditional vent modes?

Answer 24

Assist-control, SIMV, Pressure support

Question 25

What is the assist-control vent mode?

Answer 25

Non-weaning mode with pre-set rate & tidal volume; patient can generate breaths by triggering vent.

Question 26

What is seen in AC vent settings?

Answer 26

- Rate - Target variable - FiO2 - PEEP

Question 27

What is the SIMV vent mode?

Answer 27

Weaning mode with pre-set rate & tidal volume; patient gets spontaneous breaths by triggering vent.

Question 28

What is seen in SIMV vent settings?

Answer 28

Same as AC + pressure support

Question 29

What is the pressure support vent mode?

Answer 29

Weaning mode that applies to spontaneous breaths during SIMV/CPAP.

Question 30

What does the patient control in PSV?

Answer 30

- Resp rate - Inspiratory time

Question 31

What is PSV usually set at and what is the range?

Answer 31

- 10 cmH2O - 0-30

Question 32

What is seen in PSV vent settings?

Answer 32

- Pressure support - FiO2 - PEEP

Question 33

What is the AC vent mode with rate 10 and tidal volume 500?

Answer 33

Minimum volume: at least 5 L/m

Question 34

What is the SIMV vent mode with rate 10 and tidal volume 500?

Answer 34

Minimum volume: at least 5 L/m; additional breaths are what the patient can generate.

Question 35

When would non-invasive ventilation be used?

Answer 35

- Patient has to be able to breathe spontaneously - Short term (prevent intubation, failed extubation)

Question 36

What is CPAP in non-invasive ventilation?

Answer 36

Continuous positive airway pressure

Question 37

What is BIPAP in non-invasive ventilation?

Answer 37

Bilevel positive airway pressure (inspiratory & expiratory)

Question 38

How can you tell based on NIPPV if a patient can tolerate physical activity?

Answer 38

If they cannot tolerate being removed from it, they cannot exercise.