EAA/ hypersensitivity pneumonitis Flashcards
1
Q
What forms can it take?
A
Acute allergen exposure in sensitised pts
Chronic exposure = granuloma formation and obliterative bronchiolitis
2
Q
Name 3 causes
A
Bird fancier’s lung: avian protein in bird droppings
Farmer’s/mushroom workers
Malt worker’s lung: aspergillus clavatus
3
Q
What are the acute SX? (4-6h post exposure)
A
Fever, rigors
Dry cough
Dyspnoea
4
Q
What are the chronic SX?
A
Increasing dyspnoea
Wt loss
T1RF
Cor pulmonale
5
Q
What IX are required?
A
Bloods: show no eisinophilia
CXR
Spirometry
BAL
6
Q
What do you see on CXR?
A
Mid/upper zone fibrosis - honeycomb lung
7
Q
What pattern is seen on spirometry?
A
Restrictive
8
Q
What is seen on BAL?
A
Increased lymphocytes and mast cells
9
Q
How is it MX?
A
Avoid exposure
Steroids: acute/ long-term
?compensation
