Obstructive disorders -FVC normal or↓, FEV1 ↓, FEF25-75% ↓, FEV1/FVC ↓, TLC normal or ↑.Restrictive disorders -FVC ↓, FEV1 ↓, FEF 25-75% normal to ↓, FEV1/FVC N↑, TLC ↓.
ABSTRACTBackground: Nasal septal deviation is a frequent cause of increased nasal airway resistance. A narrow nasal airway would result in a decreased airflow into the lungs. The aim of the present study was to evaluate the alterations of the pulmonary functions prior to and following septoplasty using spirometry. Methods: Thirty patients with obvious nasal septal deviations were enrolled in the study. All patients had a detailed otorhinolaryngologic examination, and were performed spirometry, prior to and one month after septoplasty surgery, and the results were compared. Results: Septoplasty improves the nasal breathing pattern. While reducing FEF 50% (maximum expiratory flow at 50% of FVC)/FIF 50% , it increases PEF and FIF 50% values. In addition, exercise capacity improves following surgery. Postoperative scores showed reduction markedly compared to preoperative values (p<0.001). Conclusions: Nasal septal surgery has a positive effect on pulmonary functions.