(Illustration Sm) Additional Tests At Specification Of The

(Illustration sm) Additional tests at specification of the diagnosis of a bronchitis Except Clinical signs in the diagnosis a bronchitis important documentary To confirm presence of an obstructive syndrome and its convertibility about the help Modern standard . Measurement of volumes of the forced For 1 second (FEV1), showing size it is less than exhalation than 70 % from due size and (FVC) - FEV1/FVC the relation defines degree of an obstructive syndrome of an air line. And revealing FEV1/FVC It is less than relation than 50 % specify that the air line has Distinct hindrances, probably mechanical character (for example, a tumour Or a foreign matter). At the majority of adults to To the life middle, age physiological changes (reduction) Elasticity of lungs occur with a speed about on 30 mL in a year and then, there is decrease FEV1. Obstructive syndrome in the form of change of a stream of air in in bronchial tubes at On presence of superfluous manufacture confirms the clinical The diagnosis of a chronic bronchitis.