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Forced expiratory flow between 25% and 75% of vital capacity as a predictor for bronchial hyperresponsiveness in children with allergic rhinitis

 Hyun Bin Park  ;  Yoon Hee Kim  ;  Min Jung Kim  ;  Hwan Soo Kim  ;  Hee Seon Lee  ;  Yoon Ki Han  ;  Kyung Won Kim  ;  Myung Hyun Sohn  ;  Kyu-Earn Kim 
 Allergy Asthma & Respiratory Disease, Vol.1(1) : 60-66, 2013 
Journal Title
 Allergy Asthma & Respiratory Disease 
Issue Date
Purpose Allergic rhinitis (AR) is regarded as a risk factor for asthma and bronchial hyperresponsiveness (BHR) is frequently observed in patients with AR. The purpose of this study is to analyze the characteristics of AR patients with BHR and identify factors that contribute to the incidence of BHR. Methods The medical records of a total of 176 children with AR were analyzed retrospectively. All patients were evaluated by performing spirometry and a methacholine challenge test. Results One hundred and fifty-five patients (88%) were classified as the BHR-negative group and 21 patients (12%) were classified as the BHR-positive group. Forced expiratory flow between 25% and 75% of vital capacity (FEF25-75 %predicted) was reduced, and total eosinphil counts, total immunoglobulin E (IgE) level, and serum specific IgE levels of Dermatophagoides pteronyssinus and Dermatophagoides farinae were higher in the BHR-positive group compared to the BHR-negative group. However, FEF25-75 was the only statistically significant predictor for the presence of BHR on multivariate logistic regression analysis. The cutoff value to distinguish BHR-positive subjects obtained from a receiver operating characteristics curve of FEF25-75 was 88.4%. A higher frequency of BHR was found in the group with a FEF25-75 less than 88.4%, and the sensitivity, specificity, positive predictive value and negative predictive value were 57.1%, 80.6%, 28.6%, and 93.3%, respectively. Conclusion Reduced FEF25-75 values in children with AR can be helpful in predicting BHR. Children with low FEF25-75 in spirometric tests should be followed closely for apparent onset of clinical symptoms of asthma.
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1. College of Medicine (의과대학) > Dept. of Pediatrics (소아청소년과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kyung Won(김경원) ORCID logo https://orcid.org/0000-0003-4529-6135
Kim, Kyu Earn(김규언)
Kim, Min Jung(김민정) ORCID logo https://orcid.org/0000-0002-5634-9709
Kim, Yoon Hee(김윤희) ORCID logo https://orcid.org/0000-0002-2149-8501
Kim, Hwan Soo(김환수)
Park, Hyun Bin(박현빈)
Sohn, Myung Hyun(손명현) ORCID logo https://orcid.org/0000-0002-2478-487X
Lee, Hee Seon(이희선)
Han, Yoon Ki(한윤기)
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