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Exhaled nitric oxide.

Lora Stewart¹, Rohit Katial

¹National Jewish Medical and Research Center, Division of Allergy and Immunology, 1400 Jackson Street, Denver, CO 80206, USA.

Immunology and Allergy Clinics of North America

|November 13, 2007

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Exhaled nitric oxide (FENO) is a valuable biomarker for assessing lung inflammation, particularly in asthma. This noninvasive measurement aids in diagnosing, assessing severity, and managing asthma and other inflammatory lung conditions.

Area of Science:

Pulmonology
Biomarkers
Respiratory Medicine

Background:

Exhaled nitric oxide (FENO) is a noninvasive biomarker.
FENO reflects eosinophilic inflammation in the lungs.
Asthma is a common inflammatory lung disease.

Purpose of the Study:

To evaluate FENO as a biomarker for asthma.
To explore FENO's utility in diagnosing and managing asthma.
To assess FENO's role in other inflammatory lung diseases.

Main Methods:

Measurement of exhaled nitric oxide levels.
Clinical assessment of asthma patients.
Evaluation of FENO in diagnosing and managing lung diseases.

Main Results:

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FENO is a reliable surrogate for eosinophilic lung inflammation.
Preliminary data suggest FENO aids in asthma diagnosis, severity assessment, and control.
FENO is also useful in managing other inflammatory lung conditions.

Conclusions:

FENO is a promising noninvasive biomarker for respiratory diseases.
Further research with large-scale normative data is needed.
FENO has significant potential in clinical practice for asthma and other lung conditions.