Exhaled nitric oxide (eNO) is currently considered as a biomarker of type 2 inflammation and has been widely used in clinical practice.Recently the European Respiratory Society recommended and standardized the measurement of small airway eNO and upper airway eNO.However, there is no relevant technical standard and clinical application guideline in China.Therefore, The Asthma Collaboration Group, the Subspecialty Group of Respiratory Diseases, The Society of Pediatrics, Chinese Medical Association organized experts to refer to the latest evidence-based medicine research formulate this consensus.It provides evidence for the clinical use of eNO detection and accurate diagnosis and treatment of airway inflammatory diseases.
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随着eNO检测的广泛应用,临床上发现单一的FeNO不能全面反映整个气道炎症水平。2017年欧洲呼吸学会在完善FeNO检测的基础上,推荐并规范了小气道eNO[CaNO(concentration of nitric oxide of the alveolar or acinar region)、FeNO
200(fractional concentration of exhaled nitric oxide at a 200 mL/s flow rate)]和上气道eNO(fractional concentration of nasally exhaled nitric oxide,FnNO)的测定技术
[
3
],从而使得eNO检测更为全面。在我国除FeNO外,尚无CaNO、FeNO
200和FnNO的测定技术标准与临床应用的相关指南。为此,中华医学会儿科学分会呼吸学组哮喘协作组组织相关专家,参考国内外最新发表的相关共识、指南及多项研究结果,以临床问题为导向,凝练出针对FeNO、CaNO、FeNO
200和FnNO的测定技术标准及临床应用的系列问题,制定出本共识,以期为临床合理使用eNO检测、精准诊治气道炎症性疾病提供帮助。
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