+ ANA x 2 decreased lung gas exchange now I have to have a echocardiogram &six minute walk stress test. Ena labs normal. What is walk test for? No dx

Sounds like. Sounds like you are being evaluated for pulmonary hypertension which is where you have elevated blood pressure between your heart and lungs. This can be associated ANA autoimmune diseases. The six minute walk is to see if your oxygen levels drop with exertion on the lungs.