Thanks for your question on Health Care Magic.
I can understand your situation and problem.
By your history and description, possibility of Pulmonary hypertension
Your CT is suggestive of scarring and bronchiectesis. You are also having mild sleep apnea
. Both these conditions can cause Pulmonary hypertension (PH).
You are also living at high altitude. This is known risk factor for PH.
So in my opinion, you should get done ecg and 2d echo for the diagnosis of PH.
Treatment of PH is low dose diuretics and tadalafil
, bosentan etc.
Hope I have solved your query.
I will be happy to help you further.
Wish you good health. Thanks.