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Research ArticleOriginal Research

The Reality of an Intermediate Type Between Asthma and COPD in Practice

Tae-Bum Kim, Yeon Mok Oh, Yoon-Seok Chang, You Sook Cho, An-Soo Jang, Sang-Heon Cho, Byoung Whui Choi, Sang-Do Lee and Hee-Bom Moon
Respiratory Care August 2012, 57 (8) 1248-1253; DOI: https://doi.org/10.4187/respcare.01232
Tae-Bum Kim
Division of Allergy and Clinical Immunology
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Yeon Mok Oh
Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
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Yoon-Seok Chang
Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.
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You Sook Cho
Division of Allergy and Clinical Immunology
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An-Soo Jang
Department of Internal Medicine, Soonchunhyang University, Bucheon, Korea.
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Sang-Heon Cho
Department of Internal Medicine, Seoul National University College of Medicine, Seoul, Korea.
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Byoung Whui Choi
Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea.
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Sang-Do Lee
Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
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  • For correspondence: [email protected] [email protected]
Hee-Bom Moon
Division of Allergy and Clinical Immunology
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  • For correspondence: [email protected] [email protected]
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    Fig. 1.

    Demographic distribution of the asthma, intermediate type, and COPD groups. A: Age. B: Sex. C: Body mass index. D: Frequency of atopy. All the differences were significant by one-way analysis of variance.

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    Fig. 2.

    Smoking data of the asthma, intermediate type, and COPD groups. A: Percentage of smokers. B: Duration of smoking. C: Cigarettes per day. All the differences were significant by one-way analysis of variance.

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    Fig. 3.

    Pulmonary functions of the asthma, intermediate type, and COPD groups. A: Percent of predicted FEV1. B: Percent of predicted FVC. C: FEV1/FVC. All the differences were significant by one-way analysis of variance.

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    Fig. 4.

    Bronchodilator response and airway hyper-responsiveness in the asthma, intermediate type, and COPD groups. A: Percent with positive bronchodilator response (15% increase in FEV1). B: Post-bronchodilator response (increase in FEV1). C: Post-bronchodilator FEV1/FVC. D: Positivity on the methacholine provocation test. E: PC20 (provocational concentration of methacholine that produced a 20% decrease in FEV1). All the differences were significant by one-way analysis of variance.

  • Fig. 5.
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    Fig. 5.

    Frequency of emergency department visits (A) and admission rates (B) in the asthma, intermediate type, and COPD groups. All the differences were significant by one-way analysis of variance.

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Respiratory Care: 57 (8)
Respiratory Care
Vol. 57, Issue 8
1 Aug 2012
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The Reality of an Intermediate Type Between Asthma and COPD in Practice
Tae-Bum Kim, Yeon Mok Oh, Yoon-Seok Chang, You Sook Cho, An-Soo Jang, Sang-Heon Cho, Byoung Whui Choi, Sang-Do Lee, Hee-Bom Moon
Respiratory Care Aug 2012, 57 (8) 1248-1253; DOI: 10.4187/respcare.01232

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The Reality of an Intermediate Type Between Asthma and COPD in Practice
Tae-Bum Kim, Yeon Mok Oh, Yoon-Seok Chang, You Sook Cho, An-Soo Jang, Sang-Heon Cho, Byoung Whui Choi, Sang-Do Lee, Hee-Bom Moon
Respiratory Care Aug 2012, 57 (8) 1248-1253; DOI: 10.4187/respcare.01232
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