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Analysis of PC20-FEF25%-75% and △FVC in the methacholine bronchial provocation test

Kim HA, Kwon JE, Ahn JY, Choe JY, Kim DS, Park SH, Hyun MC, Choi BS

Purpose: Forced expiratory flow between 25% and 75% (FEF 25%-75%) is known to sensitively reflect bronchial obstruction. Methacholine challenge test (MCT) has shown varying reduction levels of forced vital capacity...
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Risk factors influencing bronchial hyperresponsiveness to methacholine in school age and adolescence of atopic dermatitis

Sung MS, Choi JW, Hwang YJ, Kim SW

PURPOSE: Many studies have shown the importance for bronchial hyperresponsiveness (BHR) in children with bronchial asthma and allergic rhinitis. However, studies have not been done in BHR in school age...
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Crucial Factors for Bronchial Hyperresponsiveness in Children with Mild Asthma

Chang JY, Shin SA, Oh JW, Lee HB

  • KMID: 2314373
  • Pediatr Allergy Respir Dis.
  • 2005 Jun;15(2):142-149.
PURPOSE: Bronchial hyperresponsiveness (BHR) is one of the key components of childhood asthma phenotype. Patients with mild asthma may have coexisting severe BHR, although the reasons for this are uncertain....
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Nasal Hyperreactivity to Methacholine Test in Perennial Allergic Rhinitis

Lee KH, Cho JS, Kim H, Yu YI, Cha CI

  • KMID: 2297705
  • J Rhinol.
  • 2001 May;8(1, 2):34-39.
Although histamine and methacholine challenge tests are commonly used to evaluate the hypersensitivity in allergic rhinitis, some controversies still remain to standardize the test. This study was designed to evaluate...
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Effect of Vitamin C on Airway Hyperresponsiveness in Heavy Smokers

Lee SG, Kim KR, Eim JO, Kim HU, Lee SS, Chung LY, Kim HJ, Lee JD, Hwang YS

BACKGROUND: Vitamin C has been reported to have a role in the decrease of airway hyperresponsiveness in animal models. This data is based on some metabolic actions of vitamin C,...
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Bronchial Hyperresponsiveness in Workers Exposed to Isocyanates

Choi KS, Kim KS, Choi BS, Choi JK, Lee SH, Moon YH

  • KMID: 2282793
  • Korean J Prev Med.
  • 1996 Mar;29(1):103-112.
We studied the association of nonspecific bronchial hyperresponsiveness with general characteristics, exposure concentration, respiratory symptoms, chest x-ray findings, past histories and pulmonary function. We determined bronchial hyperresponsiveness by methacholine challenge...
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