Use of Exhaled Nitric Oxide Measurements to Guide Treatment in Chronic Asthma

Abstract
International guidelines for the treatment of asthma recommend adjusting the dose of inhaled corticosteroids on the basis of symptoms, bronchodilator requirements, and the results of pulmonary-function tests. Measurements of the fraction of exhaled nitric oxide (FENO) constitute a noninvasive marker that may be a useful alternative for the adjustment of inhaled-corticosteroid treatment.

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