The disease reaches a non-treatable stage. The lungs fail to perform air
exchange, resulting in hypoxia
Requiring extensive and permanent oxygen therapy
A forced expiratory volume in one second (FEV1) test result of consistently less than
1 litre
The
disease reaches a non-treatable stage. The
lungs fail to perform air exchange,
resulting in hypoxia
Requiring extensive and permanent oxygen therapy
A forced expiratory volume in one second (FEV1)
test result of consistently less than 1
litre
