Measurements of Exhaled Nitric Oxide in Healthy Subjects in Thailand

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

100 participants

Study Classification

OBSERVATIONAL

Study Start Date

2010-10-31

Study Completion Date

2015-08-31

Brief Summary

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The purpose of this study is to determine fractional exhaled nitric oxide (FeNO) level in healthy subjects among Thai populations.

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Detailed Description

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Fractional exhaled nitric oxide (FeNO) were produced from epithelial cells of inflammatory airways and eosinophils and this gas was discovered since 1991.

Fractional exhaled nitric oxide (FeNO) has direct association with severity of inflammation of bronchial trees and sputum eosinophils and use for additional investigation for diagnosis asthma or inflammatory airway diseases.

There are many factors from previous studies that associate with level of fractional exhaled nitric oxide (FeNO), one of that factors is race therefore we can't use level from another studies with different race for use as reference and there is no study about level of fractional exhaled nitric oxide in Thai population.

It is therefore desirable to examine level of fractional exhaled nitric oxide (FeNO) in healthy subjects among Thai population and will be the main objective of this research.

Conditions

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Normal Non-fluency

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

CROSS_SECTIONAL

Eligibility Criteria

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Inclusion Criteria

* healthy subjects in community

Exclusion Criteria

* smoker or past history of smoking
* asthma, allergic rhinitis, chronic respiratory disease or other chronic illness
* history of wheezing within 12 months before enrollment
* history of upper or lower respiratory tract infection within 6 weeks before enrollment
* drink ethanol within 48 hours before enrollment
* drink caffeine within day before enrollment
* during pregnancy
* chronic use of any drugs
* participate other project within 30 days

Minimum Eligible Age

6 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes