Lecture 2 Part 3

Question 1

What are some Variable performance Devices?

Answer 1

Nasal canula, Simple face mask, Non-rebreather mask

Question 2

What is the oxygen concentration for Nasal cannula?

Answer 2

2-6 Ltrs, 24-35%

Question 3

What is the oxygen concentration for a simple face mask?

Answer 3

5-12 Ltrs, 24-60%

Question 4

What is the oxygen concentration of a non-rebreather mask

Answer 4

10-15 Ltrs - >60%

Question 5

What is a fixed performance device? (O2 delivery systems)

Answer 5

Provide sufficient flow of gas to meet all the needs of the patients minute ventilation. O2% determined by flow rate not pt RR

Question 6

What is a common Fixed performance device (O2 delivery)

Answer 6

Venturi mask

Question 7

What are some indications for putting a patient on >60% O2?

Answer 7

Cardiac/Respiratory arrest, Acute respiratory distress, Hypotension, Asthma, Pulmoanry Embolism

Question 8

What is a Variable Performance device (O2 delivery systems)

Answer 8

O2 delivery system that doesn’t provide all the gas necessary for minute ventilation. O2 concentration depends on amount delivered

Question 9

What is Central cyanosis?

Answer 9

Systemic shortage of Oxygen

Question 10

What are the 2 phases of breathing?

Answer 10

Inspiration and expiration

Question 11

What is the normal pH values of arterial blood gases?

Answer 11

pH 7.35-7.45

Question 12

Does the pH alone indicate acid base balance?

Answer 12

No – pH, PCO2 and HCO3 must all be within normal range, if any of them aren’t that indicates an acid base imbalance