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Influence of Chronic Sinusitis and Nasal Polyp on the Lower Airway of Subjects Without Lower Airway Diseases
Authors:Suh-Young Lee  Soon Ho Yoon  Woo-Jung Song  So-Hee Lee  Hye-Ryun Kang  Sun-Sin Kim  Sang-Heon Cho
Affiliation:1.Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.;2.Institute of Allergy and Clinical Immunology, Seoul National University Medical Research Center, Seoul, Korea.;3.Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.;4.Department of Radiology, Seoul National University College of Medicine, Seoul, Korea.;5.Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea.
Abstract:

Purpose

Upper and lower respiratory tract pathologies are believed to be interrelated; however, the impact of upper airway inflammation on lung function in subjects without lung disease has not been evaluated. This study investigated the association of CT finding suggesting chronic sinusitis and lung function in healthy subjects without lung disease.

Methods

This was a retrospective study of prospectively collected data from 284 subjects who underwent a pulmonary function test, bronchial provocation test, rhinoscopy, and osteomeatal unit computed tomography offered as a private health check-up option.

Results

CT findings showed that the sinusitis group had a significantly lower FEV1/FVC ratio than subjects without sinusitis finding (78.62% vs 84.19%, P=0.019). Among the sinusitis group, subjects classified by CT findings as the extensive disease group had a slightly lower FEV1/FVC than those of the limited disease group (76.6% vs 79.5%, P=0.014) and the associations were independent of the presence of airway hyperresponsiveness. The subjects with nasal polyp had also lower FEV1 and FEV1/FVC than subjects without nasal polyp (FEV1: 100.0% vs 103.6%, P=0.045, FEV1/FVC: 77.4% vs 80.0%, P=0.005).

Conclusions

CT findings suggesting chronic sinusitis and nasal polyp were associated with subclinical lower airway flow limitation even in the absence of underlying lung disease.
Keywords:Bronchial hyperresponsiveness   computed tomography   nasal polyp   pulmonary function test   sinusitis
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