World Library  
Flag as Inappropriate
Email this Article

Bronchial hyperresponsiveness

Article Id: WHEBN0018529179
Reproduction Date:

Title: Bronchial hyperresponsiveness  
Author: World Heritage Encyclopedia
Language: English
Subject: Pulmonary function testing, Firestone Institute for Respiratory Health, Pulmonary stretch receptors, Nitrogen washout, Ventral respiratory group
Collection: Bronchus Disorders, Pulmonary Function Testing
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Bronchial hyperresponsiveness

Bronchial hyperresponsiveness (or other combinations with airway or hyperreactivity) is a state characterised by easily triggered bronchospasm (contraction of the bronchioles or small airways).

Bronchial hyperresponsiveness can be assessed with a bronchial challenge test. This most often uses products like methacholine or histamine. These chemicals trigger bronchospasm in normal individuals as well, but people with bronchial hyperresponsiveness have a lower threshold.

Bronchial hyperresponsiveness is a hallmark of asthma but also occurs frequently in people suffering from chronic obstructive pulmonary disease (COPD).[1] In the Lung Health Study, bronchial hyperresponsiveness was present in approximately two-thirds of patients with non-severe COPD, and this predicted lung function decline independently of other factors.[2] In asthma it tends to be reversible with bronchodilator therapy, while this is not the case in COPD.

Footnotes

  1. ^ Postma DS, Kerstjens HA (November 1998). "Characteristics of airway hyperresponsiveness in asthma and chronic obstructive pulmonary disease". Am. J. Respir. Crit. Care Med. 158 (5 Pt 3): S187–92.  
  2. ^ Tashkin DP, Altose MD, Connett JE, Kanner RE, Lee WW, Wise RA (June 1996). "Methacholine reactivity predicts changes in lung function over time in smokers with early chronic obstructive pulmonary disease. The Lung Health Study Research Group". Am. J. Respir. Crit. Care Med. 153 (6 Pt 1): 1802–11.  


This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.