Are they not givig him breathing therapy?????? When my dad had this problem they have a medication that they breath in and it makes them cough....
I am not sure if there is medication they give him to assist but on the whole his oxygen levels are good it is more strength to assist with the cough more than the ability to cough which is there but the strength is not.
As far as therpy he has physio twice a day and they give him deep breathing exercises and also I keep reminding him to try breathing deeply.
The first is his normal medication for his asthma and the other I am not sure if this is specific for the problem or if it just the other medication that is the second inhaler that he normally has.
He normally has a blue and a purple inhaler, the blue is what they put in the nebulizer not sure if they are giving him the purple type as well in the nebulizer.