Paraseptal Emphysema is usually not concerning. This is an anatomical abnormality which may be present in many normal persons. This may be incidental findings and may not be associated with the affection of the function. To assess the functions, following pulmonary function tests should be done;
1) In spirometry you exhale in a mouthpiece which is connected to a computer. How fast and how much you exhale tells about the various lung functions and capacities.
2) Lung volume measurement is done by body plethysmography. One sits in a clear airtight small chamber and technologist asks you to breathe in and out of a mouthpiece. Changes in pressure inside the box help determine the lung volume.
3) The diffusion capacity is measured by breathing a harmless gas, for only one breath. The concentration of the gas in the air one breathes out is measured. The difference in the amount of gas inhaled and exhaled measures how effectively gas travels from the lungs into the blood.
These only can tell the reasons of your shortness of breath and if the lung reserves have been affected.
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