Oxygen and Hypoxia

Question 1

Define risk

Answer 1

The probability of occurrence of an adverse event

Question 2

Write down the formula for oxygen delivery

Answer 2

Hb x saturation x cardiac output

Question 3

What is the amount of ATP generated by aerobic vs anaerobic respiration?

Answer 3

Aerobic: 38ATP
anaerobic: 2 ATP

Question 4

What causes a left shit (increased affinity) on an oxygen dissociation curve and therefore less O2 supplied to tissues?

Answer 4

Reduced temperature
Reduced 2,3 dpg and H+
Carbon monoxide

Question 5

O2 therapy?

Answer 5

1. Nasal prongs; oxygen 24% to 35%
2. Variable performance oxygen mask 45% to 69%
3. High air flow oxygen enrichment Venturi mask; FIXED VOLUME
4. Hudson with non rebreathing bag: 60 to 80%