Lecture 5b Flashcards
1
Q
What are the 3 stages of acute respiratory distress syndrome (ARDS)
A
Exudative- capillary permeability and oedema
Proliferative- partial collapse of alveoli
Fibrotic stage
2
Q
How do we measure the severity of an ARDS with oxygenation
A
The lower the PaO2 the more severe an ARDS is
3
Q
Will adding 100% oxygen change the PO2 in a patient with an absolute shunt?
A
No. Raising FiO2 has no effect on non ventilated alveoli because how will oxygen enter anyway?
4
Q
A patient with 100% oxygen saturation, will giving them more oxygen improve the saturation?
A
No. 100% saturation cannot be exceeded
