Have shortness of breath when lying flat and cough a lot.chest ct showed mild cardiomegaly and mild dependent atelectasis but echocardiogram was okay.

SOB lying flat: Recent cold? or have another medical condition like HTN,DM, autoimmune disease, lyme,coxsackie? d-dimer normal?Did CT check for PE? BNP level ?ankle swelling? What was pulm pressure?asthma?Rare heart failure with normal ejection fraction. F/U w/cardiologist ask about use of lasix (furosemide) (if ankle edema)or ,elevating head of bed . http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2394690/