I'm soon to have open heart surgery to replace my aortic valve (born with defect). I still get a cough from my small airways disease/type of asthma, which is tons, tons better through using Qvar, but I still cough a few times everyday. I'm concerned about the imapct of this cough postoperatively as my sternum will have been cut open and been sewn together, you can imagine coughing and how that might cause problems. The surgeon said they'd give me a ""nebuliser"". Can anyone tell me what that is ? When I looked it up it seemed to be for more deep asthma type cough. I'm thinking it wouldn't be suitable for my 'irritated' cough.