Dispersion capacity determination

The diffusion capacity measurement is an examination method for determining the oxygen exchange between the lung and the blood flow. Under normal circumstances, the lungs can well absorb the carbon monoxide in the inhaled gas. Basic Information Specialist Category: Respiratory Examination Category: Other Inspections Applicable gender: whether men and women apply fasting: not fasting Tips: Pay attention to normal eating habits and pay attention to personal hygiene. Normal value Under normal circumstances, the lungs can well absorb the carbon monoxide in the inhaled gas. Clinical significance Abnormal result The results suggest that poor absorption of carbon monoxide indicates that oxygen exchange between the lung and the bloodstream is not working properly. In patients with pulmonary fibrosis, emphysema, and pulmonary vascular injury, diffuse dysfunction has certain characteristics. Patients who need to be examined are suspected of having symptoms such as pulmonary fibrosis, emphysema, and pulmonary vascular injury. Precautions Forbidden before examination: Pay attention to normal eating habits and pay attention to personal hygiene. Requirements for inspection: Actively cooperate with the doctor. Inspection process The carbon monoxide diffusion capacity measurement can estimate the transport efficiency of oxygen from the alveolar to the blood. Since it is difficult to directly measure the diffusion function of oxygen, the subject inhales a small amount of carbon monoxide, breathes for 10 seconds, and then vigorously exhales to the carbon monoxide meter. Not suitable for the crowd Inappropriate crowd: No.