The spirometer is used to obtain the basic parameters of the external breathing function.
The forced vital lung capacity is the maximum expiration after a complete inhalation. This is an important check for chest and respiratory diseases and is a prerequisite for testing in modern lung inspection. At the same time, it is of great importance for respiratory diseases, differential diagnosis, treatment evaluation and choice of indications for surgical procedures.
Thus, with the rapid development of clinical respiratory physiology, the clinical application of pulmonary examination is also gaining popularity.