W9/L4: Lung pathophysiology Flashcards
1
Q
What’s the PO2 at sea level?
A
160 mmHg
2
Q
What’s mean pulmonary artery pressure?
A
~15mmHg
3
Q
What happens to pulmonary artery pressure in a normal person as CO increases? Why?
A
It stays the same, as there’s dilatation & recruitment of pulmonary vessels
4
Q
What are the broad mechanisms of pulmonary oedema?
A
Increased hydrostatic pressure
Decreased oncotic pressure
Increased premiability
Impaired lymph drainage
