- There Is No Of Following Three Criteria:

- There is no of following three Criteria: (a) - a smoothness of a curve of increase volume-stream (there is no plateau At least in the second part); (b) - if the test is unable To show an exhalation plateau in a current of 15 seconds; or (c) - when the patient not Can or should not continue the test for an exhalation estimation on the medical To indications. At patients who have, considerable loss Elasticity of a lung, for example, a pulmonary emphysema, sometimes Can show "negative dependence of effort compulsory Exhalation. "This indicator is measured as an extensibility of lungs (=compliance). In other words, effort which should have most The high peak on an exhalation, can be shown low FEV1 because of the dynamic Compression of great volumes of air in easy and air lines. Thus Record with the highest indicator FEV1, made with not the full By the maximum effort it should not be considered. Therefore it is applied Following rule of selection - only efforts which have time Achievements of a maximum a stream (TPEF) less than or are set off equal 0.