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J Int Med Res ; 46(1): 135-142, 2018 Jan.
Article in English | MEDLINE | ID: mdl-28758847

ABSTRACT

Objective This study was performed to evaluate the effect of sex on bronchial parameters and the predicted forced expiratory volume in 1 s expressed as a percentage of the forced vital capacity (FEV1% pred) on pulmonary function testing. Methods The data of 359 patients with chronic obstructive pulmonary disease (COPD) with available FEV1% pred and computed tomography (CT) images were retrospectively reviewed. FACT-Digital lung TM software (DeXin, Xi'an, China) was used to perform fully automated three-dimensional CT quantitative measurements of the bronchi. Generation 5 to 7 bronchi were measured, and the parameters analyzed were the lumen diameter (LD), wall thickness (WT), lumen area (LA), and WA% [WA / (WA + LA) × 100%]. Results In the smoking, smoking cessation, and nonsmoking groups, women had a significantly larger WA% and smaller LD, WT, and LA than men. The FEV1% pred was significantly lower in women than men in the smoking and smoking cessation groups. The FEV1% pred was significantly higher in women than men in the nonsmoking group. Conclusion Sex-related differences may partially explain why smoking women experience more severe pulmonary function impairment than men among patients with COPD.


Subject(s)
Bronchi/diagnostic imaging , Pulmonary Disease, Chronic Obstructive/diagnostic imaging , Smoking/physiopathology , Aged , Bronchi/pathology , Bronchi/physiopathology , Female , Forced Expiratory Volume , Humans , Imaging, Three-Dimensional , Male , Middle Aged , Pulmonary Disease, Chronic Obstructive/pathology , Pulmonary Disease, Chronic Obstructive/physiopathology , Retrospective Studies , Sex Factors , Smoking Cessation/statistics & numerical data , Tomography, X-Ray Computed , Vital Capacity
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