Hi, thanks for using healthcare magic
Shortness of breath
is usually related to conditions of the heart , lungs. There are other potential cause shortness of breath such as anemia
, problems related to the musculoskeletal system, endocrine system or psychological causes.
The tests that he had done would have identified any problems in the heart and lungs- the only other additional cardiac investigation would be an echo but if the ecg was normal , the doctors may not think that it is necessary.
Other additional tests would be a full blood count and an ESR
. The ESR would determine whether there is any evidence of inflammation in the body and if it is elevated then further investigations would be conducted.
Hope this helps