Respiratory failure

Question 1

What is type 1 respiratory failure?

Answer 1

Decreased Pa02 <8pa
or low C02
disorder of diffusion

Question 2

Causes of type 1 respiratory failure

Answer 2

decreased SA
increased thickness barrier
decreased diffusion gradient

Question 3

What is type 2 respiratory failure?

Answer 3

decreased Pa02 <8kpa
or increased C02
this is due to a disorder of ventilation and hypoventilation
it is a balance between strength and load

Question 4

What are things which affect strength?

Answer 4

impaired neuromuscular transmission
diminished drive- too much anathestic
muscle weakness: emphysema, exhaustion or neuromuscular problem
MND
GBS
poor muscle nutrition
over use of accessory respiratory muscles

Question 5

what are things which affect load?

Answer 5

chest wall abnormalities 
airway and lung abnormalities 
what is making it hard to breath
wheeze, consolidation, collapse, pulmonary oedema 
cystic fibrosis 
thoracotomy, decreased chest compliance 
rib fracture 
collapse, sputum. brochospasm