A snapshot of exhaled nitric oxide and asthma characteristics: experience from high to low income countries.
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| Abstract |
Nitric oxide is a gas produced in the airways of asthmatic subjects and related to T2 inflammation. It can be measured as fractional nitric oxide (FeNO) in the exhaled air and used as a non-invasive, easy to evaluate, rapid marker. It is now widely used in many settings to determine airway inflammation. The aim of this narrative review is to report relationship between FeNO and the physiopathologic characteristics of asthmatic patients. Factors affecting FeNO levels have also been analysed as well as the impact of corticosteroid, target therapies and rehabilitation programs. Considering the availability of the test, spreading this methodology to low income countries has also been considered as a possibility for evaluating airway inflammation and monitoring adherence to inhaled corticosteroid therapy. PubMed data search has been performed restricted to English language papers. Research was limited to studies in adults unless studies in children were the only ones reported for a particular issue. This revision could be useful to summarize the role of FeNO in relation to asthma characteristics and help in the use of FeNO in different clinical settings particularly in low income countries.
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| Authors | Patrizia Pignatti, Dina Visca, Stelios Loukides, Anne-Grete Märtson, Jan-Willem C Alffenaar, Giovanni Battista Migliori, Antonio Spanevello |
| Journal | Pulmonology (Pulmonology) 2022 Jan-Feb Vol. 28 Issue 1 Pg. 44-58 ISSN: 2531-0437 [Electronic] Spain |
| PMID | 33358001 (Publication Type: Journal Article, Review) |
| Copyright | Copyright © 2020 Sociedade Portuguesa de Pneumologia. Published by Elsevier España, S.L.U. All rights reserved. |
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