Thanks for your question on Health Care Magic.
I can understand your concern.
In my opinion, we should first rule out heart diseases in your husband's case.
He is having
chest tightness and breathing difficulty in morning. These are commonly seen in heart diseases.
So get done ecg, 2d echo and
stress test (trade mill test) to rule out heart diseases.
If all these are normal then no need to worry for heart diseases.
Lung diseases like
bronchitis can also cause similar symptoms. So get done PFT for the diagnosis of bronchitis.
He may need inhaled bronchodilators and inhaled corticosteroid (ICS) if it is bronchitis.
Don't worry, he will be alright, but better to first rule out heart diseases.
Hope I have solved your query. I will be happy to help you further. Wishing good health to your husband. Thanks