Association Between Fractional Exhaled Nitric Oxide and Asthma Control

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

62 participants

Study Classification

OBSERVATIONAL

Study Start Date

2010-02-28

Study Completion Date

2010-12-31

Brief Summary

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The purpose of this study is to determine mean or median of fractional exhaled nitric oxide (FeNO) in Thai atopic asthmatic patients that divided into subgroups due to level of asthma control according to the global initiative for asthma guideline.

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Detailed Description

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From many previous studies, fractional exhaled nitric oxide (FeNO) has many benefits such as non-invasive, easily to perform, less time consume, has direct association with severity of inflammation of bronchial trees and sputum eosinophils, has benefit for diagnosis and monitoring the treatment in asthmatic patients.

In Thailand, this field of study is less extend, especially in children population. We hypothesized that in uncontrolled or partly controlled group may have high level of fractional exhaled nitric oxide (FeNO) than controlled group.

It is therefore desirable to examine the association between fractional exhaled nitric oxide (FeNO) and level of asthma control among atopic asthmatic Thai children and will be the main objective of this research.

Conditions

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Bronchial Asthma

Study Design

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Observational Model Type

CASE_CONTROL

Study Time Perspective

CROSS_SECTIONAL

Eligibility Criteria

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Inclusion Criteria

* clinical diagnosis of atopic bronchial asthma
* follow up in clinic of allergy and clinical immunology, Siriraj hospital

Exclusion Criteria

* smoker or past history of smoking
* has chronic disease eg. HIV infection, pulmonary hypertension, systemic lupus erythematosus, liver cirrhosis, gastroesophageal reflux, COPD, bronchiectasis
* drink ethanol within 48 hours before enrollment
* history of upper or lower respiratory tract infection within 6 weeks before enrollment
* drink caffeine within day before enrollment
* during pregnancy
* history of systemic steroid use within 8 weeks before enrollment

Minimum Eligible Age

7 Years

Maximum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No