Chronic Obstructive Pulmonary Disease Is Negatively Related with Nasal Polyp in Middle Aged and Elderly Chronic Rhinosinusitis Patients / 대한이비인후과학회지

ABSTRACT

BACKGROUND AND OBJECTIVES: Chronic obstructive pulmonary disease (COPD) is known to induce chronic rhinosinusitis (CRS). Nasal polyp, which is frequently found in patients with CRS, seems to have close relationship with COPD, but little is known about its relationship with COPD. In this study, we investigated the relationship between COPD and nasal polyp in middle aged and elderly CRS patients. SUBJECTS AND METHOD: We analyzed the clinical data of 174 patients (age of over 50 years) with CRS. Patients were divided as COPD [forced expiratory volume (FEV1)/forced vital capacity (FVC)<70%, n=30] and non-COPD group (FEV1/FVC≥70%, n=144) according to the pulmonary function test results. Binary logistic regression analysis was used to describe the relationships between clinically relevant factors related to nasal polyp. RESULTS: On logistic regression analysis, no significant relationship was found between age [adjusted odds ratio (AOR) 1.058, 95% confidence interval for the difference (CI)=0.995-1.126, p=0.073], sex AOR 0.897, 95% CI=0.366-2.415, p=0.897), smoking (AOR 0.434, 95% CI=0.154-1.219, p=0.113) and obesity (underweight AOR 3.833, 95% CI=0.781-18.808, p=0.098, overweight AOR 5.169, 95% CI=0.996-26.814, p=0.051, obese AOR 2.911, 95% CI=0.335-25.329, p=0.333) with polyp. However, there was a negative correlation between COPD history and nasal polyp with statistical significance (AOR 0.288, 95% CI=0.102-0.809, p=0.018). CONCLUSION: Our findings suggest that patients with COPD are less likely to have nasal polyp than patients without COPD.