Exam 2

Question 1

what is the normal value of SpO2?

Answer 1

92% - 100%

Question 2

what is hypoxemia?

Answer 2

low oxygen in the blood

Question 2

What do you do if you get a wrong order for O2?

Answer 2

• get a new order
• ask doctor

Question 3

Humidifier and effects of back pressure

Answer 3

• Chirp tube(pinch tubing)
• No chirp = leak
• Whistling = back pressure

Question 3

what is the normal PaO2?

Answer 3

80 -100 % mmHg

Question 3

what is hypoxia?

Answer 3

low oxygen in the tissue

Question 4

Quiz Chart

Question 5

What are concerns when using a mask?

Answer 5

• aspiration (main concern)
• uncomfortable
• eating

Question 6

What O2 is used for COPD patients?

Answer 6

lowest O2 concentration

Question 7

what happens when the % of oxygen increases?

Answer 7

% of oxygen increase = increase of PaO2

Question 8

what oxygen device is most commonly used?

Answer 8

nasal cannula

Question 9

Why is there a minimum flow for Simple Masks?

Answer 9

Min. of 5L to wash out CO2

Question 10

Low flow systems qualifications vs. High flow

Answer 10

• (300-700mL Vt, <25 RR, normal breathing pattern)
• High: (arratic RR or VT, abnormal breathing pattern)

Question 11

Non rebreathing masks

Answer 11

• flow to keep bag inflated, not totally collapse
• if bag deflates (increase flow)
• If flow is not increased, it will build up CO2

Question 12

Effects on FiO2 with increased or decreased ventilation when using low flow systems

Answer 12

• Increased, bc of shallow breathing
• decreases with increased breathing

Question 12

what can High flow systems can guarantee ?

Answer 12

• FiO2- despite ventilation or breathing pattern
• meets patients respiratory needs

Question 13

MV calculation

Answer 13

RR x Vt

Question 13

total flow calculation

Question 14

How to calculate peak inspiratory needs

Answer 14

MV x 3

Question 15

How to make sure device meets patient’s inspiratory needs

Answer 15

• If total flow is greater than MV x 3

Question 16

Effect of increased flow on air entrainment mask

Answer 16

– doesn’t change % concentration but total flow to patient

Question 17

Air entrainment concept- effects on FiO2 and flow when change size of jet orifice or entrainment port

Answer 17

• It brings more air in, therefore lowers the O2 concentration
• less air coming in = more O2 concentration

Question 18

Components to selecting proper O2 device for patient

Answer 18

• Age, disease process, stability of MV (RR 7 Vt)
• COPD = lowest concentration device

Question 19

Indications for use of Heliox and device used for delivery

Answer 19

• Non-rebreather
• Indications: stridor patients, airway obstructed patients

Question 20

Indications for Nitric Oxide

Answer 20

• Vasodilators
• Reduces pulmonary hypertension, increases blood flow to lungs, increases oxygenation

Question 21

Indications for hyperbaric O2

Answer 21

• CO2 poisoning, wound healing, (NOT cardiac arrest)

Question 22

First thing you do when you are informed your pt needs O2

Answer 22

• Verify orders

Question 23

Effects of O2 Therapy

Answer 23

• Decreases hypoxia
• Increases PAO2
• Decreases work on cardiopulmonary system

Question 24

what happens during shallow breathing?

Answer 24

• Oxygen concentration increases

Question 25

Key considerations in choosing O2 therapy

Answer 25

• Type of airway (artificial)
• RR & Vt
• Age