Mechanical Insufflator-exsufflator in Patients After Video-assisted Thoracoscopic Operations With One-lung Ventilation

Inclusion Criteria: * Video-assisted thoracoscopic surgery using one-lung ventilation * Age 18-65 years Forced expiratory volume in one second (FEV1) 60% of predicted or more * Absence of pronounced bronchial secretion before surgery * Written informed consent. Exclusion Criteria: * Age less than 18 and more than 65 years * Presence of pneumothorax 6 hours after surgery on radiography * Pulmonary hemorrhage of any intensity * Unstable hemodynamics * Forced expiratory volume in one second (FEV1) is less than 60% of predicted during preoperative examination * The scope of the operation is more than a lobectomy * Bilateral and combined operations * Mechanical ventilation after surgery for more than 6 hours * Anesthesia risk according to American Society of Anesthesiologists (ASA) 4 and 5 points