Physiology

Question 1

Approximate PAO2 when an animal is breathing room air

Answer 1

100mmHg

Question 2

Approximate PAO2 when an animal is breathing 100% oxygen under anaesthesia

Answer 2

500mmHg

Question 3

Abbreviation of partial pressure of Oxygen at sea level

Answer 3

PAO2 = 5 x FiO2

Question 4

What is measured with blood gases from an arterial blood sample?

Answer 4

The dissolved fraction of oxygen in the blood, the PaO2

Question 5

How is oxygen carried within the blood?

Answer 5

Mostly bound to haemoglobin the rest dissolved in plasma

Question 6

How anaemia impact blood oxygen content and delivery of oxygen to the tissues

Answer 6

There may not be many red blood cells circulating and although they are fully saturated with oxygen it is not enough to oxygenate the tissue

Question 7

By assessing ETCO2 we can assess:

Answer 7

The circulatory systems ability to transport CO2 to the lungs, the ventilation and metabolism within the tissues

Question 8

Normal ETCO2 in conscious animals

Answer 8

35-45mmHg