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Article: Use of Exhaled Nitric Oxide in Predicting Response to Inhaled Corticosteroids for Chronic Cough
- Article from:
- Mayo Clinic Proceedings
- Article date:
- November 1, 2007
- Author:
CopyrightCopyright Mayo Foundation for Medical Education and Research Nov 2007. Provided by ProQuest LLC. (Hide copyright information)
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OBJECTIVE: To evaluate our experience with patients who presented with chronic cough and how exhaled nitric oxide predicted response to Inhaled corticosterold (ICS) therapy.
PATIENTS AND METHODS: This retrospective observational study of 114 patients evaluated for chronic cough with measured exhaled nitric oxide and methacholine challenge testing was conducted from December 1, 2004, through November 30, 2005. Clinical records were extracted. Patients with no documented follow-up were contacted by telephone and administered a questionnaire.
RESULTS: In 64 patients, ICS therapy was started or the current ICS dose increased. Forty-one patients had elevated exhaled nitric oxide levels (defined ...