There are many ways in which cancer can cause fatigue. The growth of a tumor, in general, can be taxing for your body. Other symptoms of cancer such as shortness of breath, anemia, pain, or a decreased level of oxygen in your blood (hypoxia) can cause fatigue.
A pulmonary function test may take 30 to 60 minutes to complete. This will vary according to the amount of trials necessary for you to get repeatable test results.
The angiogram procedure takes several hours, depending on the complexity of the procedure. Pulmonary angiography Pulmonary, or lung, angiography is performed to evaluate blood circulation to the lungs.