I had a spirometry test a couple of weeks ago and my results are
FEV1: 1.39 (Actual) 2.4 (Predicted) 57% of predicted
FVC: 1.96 (Actual) 3.0 (Predicted) 64% of predicted
FEV1/FVC ratio: 70% (Actual) 80% (Predicted)
PEFR: 362 (Actual) 359 (Predicted)
I suffer from asthma (have for many years but always controlled) and use a serotin 250mg inhaler twice a day and salbutamol when required, however I have had 3 nasty chest infections in the last 3 months and I am now feeling breathless (hence the spirometry tests) a lot of the time and have tightness in my chest (like my chest is in a vice). My doctor has received the results of a recent chest x ray and has informed that it is clear and shows no masses, no hyperinflation etc.
What is wrong with me?
Do I require further investigation/tests? If so which ones?