Discuss the factors that affect oxygen transport from the alveoli to the tissues
No prizes for guessing why this is an important topic…
I have previously posted on the oxygen cascade and included a reference at that post which you may like to refer to. This topic is well covered in both of the respiratory physiology textbooks on the reading list.
BT_PO 1.23 Oxygen cascade
BT_PO1.24 Describe the alveolar exchange of oxygen and carbon dioxide
BT_PO 1.25 Discuss diffusion capacity and its measurement
BT_PO 1.31 Discuss the carriage of oxygen in blood, etc.
The first 4 of these are reasonably easy, as are the ones in my other post on this topic.
There is a linear relationship between PaO2 and oxygen content of arterial blood T/F
It is normal for the A-a gradient of oxygen to increase with increasing age T/F
Breathing a hypoxic mixture will generally result in hyperventilation, in an attempt to return alveolar oxygen levels to normal T/F
A patient breathing room air with a Hb of 15g/dL will have the same oxygen carrying capacity as a patient with a Hb of 10g/dL breathing 100% O2 T/F
A person with an oxygen consumption of 200ml/min, breathing room air, will require an alveolar ventilation rate of at least 1L/min to prevent alveolar PO2 reaching zero T/F (the answer to this one can be found in a very interesting graph in Nunn’s Chapter on Oxygen)