Fractional exhaled nitric oxide (FeNO) in chronic obstructive respiratory diseases is associated with the bronchodilator response.

ABSTRACT:

Background

Among chronic obstructive respiratory diseases (CORDs), the fractional exhaled nitric oxide (FeNO) is a marker of eosinophilic airway inflammation. Few data on FeNO in CORD are available in Vietnam. In this study, we aimed to relate the FeNO with the clinical and functional characteristics of CORD in Vietnam.

Methods

A cross-sectional study was conducted in 235 patients with chronic respiratory symptoms and airways limitation. Clinical evaluation was obtained by questionnaire; pre- and post-bronchodilator (BD) spirometry, eosinophil counts, allergen skin tests and FeNO were measured. Patients were considered as chronic obstructive pulmonary disease (COPD), asthmatics or asthma COPD overlap (ACO) based on GINA/GOLD guidelines. The FeNO levels were related to clinic

SUBMITTER: Nguyen TC 

PROVIDER: S-EPMC12688536 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature