Clinical evaluation of lung function in 74 patients with inflammatory bowel disease

Abstract

Objective To test and evaluate the lung function of patients with inflammatory bowel disease (IBD),and to explore the correlation and characteristics between IBD and abnormal lung function.Methods From January 2012 to June 2013,74 hospitalized patients with IBD were collected,among them 34 cases were ulcerative colitis (UC) and 40 cases were Crohn's disease (CD).At the same period,74 healthy individuals were enrolled as controls.The database of history was established.The general state,chemical examinations,lung function,chest X-ray,the diagnosis and treatment were statistically analyzed separately.T test was performed for comparison between groups of measurement data,chi square test was for comparison between groups of count data,rank-sum test was for comparison between groups of ordinal data,and Logistic regression was for multivariate analysis.Results Among the 74 patients with IBD,56 patients (75.68％) were found with abnormal lung function.The percentage of abnormal residual volume of IBD and CD group was 51.35％(38/74) and 60.00％(24/40),which were higher than that of control group [31.08％ (23/74)] and the differences were statistically significant (t=-2.557,P=0.013; t=2.236,P=0.031).There were no significant difference between UC and CD group (P＞0.05).There was no significant correlation between abnormal pulmonary function and the severity of IBD (F=0.744,P=0.690) or extent of lesion (F-2.796,P=0.424).The course of disease ≥five years was a possible protecitive actor (OR=0.824,95％CI:0.687-0.987),and elevated erythrocyte sedimentation rate (ESR) was a possible risk factor (OR=1.093,95％CI:0.994-1.202).Conclusions Most IBD patients are complicated with impaired lung function.It might occur regardless of severity or extent of disease.Course of the disease and ESR may he the influence factors in abnormal lung function. Key words: Inflammatory bowel disease; Colitis, ulcerative; Crohn disease; Lung function