Stephen J. Schueler, M.D.

Bronchitis 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 Bronchitis 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 Bronchitis Chronic References
  1. Brunton S, Carmichael BP, Colgan R, Feeney AS, Fendrick AM, Quintiliani R, Scott G. Acute exacerbation of chronic bronchitis: a primary care consensus guideline. Am J Manag Care. 2004 Oct;10(10):689-96. [1552116]
  2. Martinez FJ, Anzueto A. Appropriate outpatient treatment of acute bacterial exacerbations of chronic bronchitis. Am J Med. 2005 Jul;118(Suppl 7A):39S-44S. [15993676]
  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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