Effect of Manual Chest Wall Vibration on Respiratory Function and Chest Tube Duration After Thoracic Surgery

Manual chest wall vibration is applied with the patient in a semi-Fowler's position during the expiratory phase of breathing. The practitioner places both hands flat on the chest wall and delivers gentle, rhythmic vibrations, starting from the lower lobes and progressing toward the upper lobes. Patients are instructed to inhale slowly through the nose and exhale using a pursed-lip breathing technique with a 1:2 inspiration-expiration ratio. The procedure is performed for approximately 5 minutes, corresponding to about 10 respiratory cycles, and is typically applied during the patient's rest period following routine care.

Control group patients were informed about the study and provided written consent. They received only routine nursing care, with no additional interventions applied. Baseline measurements were taken at 0 minutes, including dyspnea (MBS), pain (VNRS), vital signs, and arterial blood gas values. Following routine care, the same parameters were reassessed at 3, 5, and 10 minutes and recorded. No manual chest wall vibration was performed; only standard clinical monitoring was maintained. The same assessment protocol was repeated in the evening session.