Clinical Trial: Comparison of On-line and Off-line Measurements of Exhaled Nitric Oxide (NO)

Study Status: Completed
Recruit Status: Unknown status
Study Type: Observational

Official Title: Comparison of On-line and Off-line Measurements of Exhaled NO

Brief Summary: Asthma is a major health problem worldwide. The measurement of fractional exhaled nitric oxide (FENO) has been established as a valuable non invasive and simple tool in the diagnosis of asthma and may also act as a useful surrogate inflammatory marker on which to base treatment decisions in asthma management algorithms. The measurement is useful also in other respiratory diseases. Current methods of measuring FENO include on line measurements by heavy duty expensive analyzers which are not widely and easily available. Off line measurements of breath samples which can be analysed later may be a simple solution. We hypothesize tha toff line measurements of NO will be as reliable and valid as those measured on-line

Detailed Summary:
Sponsor: Ziv Hospital

Current Primary Outcome: Off line measurement of exhaled NO [ Time Frame: Two types of breathing in the same day ]

Original Primary Outcome: Same as current

Current Secondary Outcome:

Original Secondary Outcome:

Information By: Ziv Hospital

Dates:
Date Received: May 26, 2008
Date Started: July 2010
Date Completion: July 2011
Last Updated: August 15, 2009
Last Verified: August 2009