Stephen J. Schueler, M.D.

Infection of the Bronchial Tubes Chronic Testing Peak Flow

Those who take medication for wheezing due to chronic bronchitis should measure the PEFR before and after treatment, and know their PEFR zones:

  • PEFR <50% of personal best is the Red Zone. This indicates a severe attack and the need for more aggressive treatment, often requiring corticosteroids.
  • PEFR 50-80% of personal best is the Yellow Zone. It indicates suboptimal control or an early attack.
  • PEFR 80-100% of personal best is the Green Zone. It indicates good control.

Continue to Infection of the Bronchial Tubes Chronic Warning Signs

Last Updated: Jun 1, 2009 References
Authors: Stephen J. Schueler, MD; John H. Beckett, MD; D. Scott Gettings, MD
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PubMed Infection of the Bronchial Tubes Chronic References
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  3. Panpanich R, Lerttrakarnnon P, Laopaiboon M. Azithromycin for acute lower respiratory tract infections. Cochrane Database Syst Rev. 2004 Oct 18;(4):CD001954. [15497172]
  4. Schmier JK, Halpern MT, Higashi MK, Bakst A. The quality of life impact of acute exacerbations of chronic bronchitis (AECB): a literature review. Qual Life Res. 2005 Mar;14(2):329-47. [1589242]
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