A Study of Pulmonary Function Tests in Patients with Chronic Rhinosinusitis Following Endoscopic Sinus Surgery.

Chronic inflammatory disorders of the upper airways are extremely prevalent and they have a major impact on public health.To assess the change in pulmonary function tests in patients of chronic rhinosinusitis undergoing functional endoscopic sinus surgery pre operatively and post operatively.To evaluate the difference in mean of FEV1, FEV1%, FVC, FVC%, FEV1/FVC in patients of chronic rhinosinusitis undergoing functional endoscopic sinus surgery.Prospective observational study.From July 2019 to September 2020 in Department of ENT and Head & Neck surgery, SMS Medical College, Jaipur.There was a significant improvement in the mean FEV1, FEV1%, FVC, and FVC% values post-surgically ( < 0.05). In our study, there was also a significant improvement in the FEV1/FVC value at one month postoperatively, reflecting the effect of FESS on relieving the symptomatic lower airway obstruction.Our study concludes that following Functional Endoscopic Sinus Surgery there is significant improvement in pulmonary function tests reflecting the improvement of asymptomatic lower airway disease in cases of chronic rhinosinusitis.