Rabindra Nath Das
Constrained Expiratory Volume in 1 (FEV1) second is the measure of air volume that can persuasively be smothered from the lungs in the primary second of a constrained exhalation. FEV1 is profoundly related with the Chronic Obstructive Pulmonary Disease (COPD) which is a dynamic ailment that makes it hard to breath. For COPD patients, the air from their lungs is to be breathed out in littler sums and at a lower rate in contrast with a solid individual without COPD. For the most part, specialists use FEV1 as one of the measures to decide the lung capacity of a person. Therefore, the determinants of FEV1 are very important to the medical practitioners. Many exploration articles have revealed that the normal FEV1 values in sound people rely upon stature, age, weight record, sex and ethnicity [1-5].
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