NCT00672893|Completed
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Sponsor study identifier
Secondary identifiers
observational
200
4 countries
5
Study Start
February 2006
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
December 2008
Actual (reported)Study Completion
December 2008
Actual (reported)Vibration response imaging (VRI) technology, provides a radiation-free dynamic image of the lung, by visualizing vibration energy emitted during the respiration cycle (lung sounds). Airflow in the lungs during the respiration cycle creates vibrations that propagate through the lung tissue; these vibrations are affected by the structural properties of the lungs and may vary in space, time and frequency. Moreover, any structural alteration, such as a bronchial obstruction or space occupying infiltration, is reflected in a corresponding modification of the vibration response. As obstructions that occur in airways alter airflow, the VRI may provide additional lung function information prior to treatment for airway obstruction and during follow-up. Moreover, the VRI may provide the physician immediate evaluation of the improvement of air flow distribution, quantitative and qualitative measurements. Furthermore, the VRI is a non-invasive, radiation free procedure which is simple and doesn't require the level of patient effort required for lung function test and other evaluation.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
December 2008
Actual (reported)Click on a node to explore related trials.
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Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
February 2006
Date type not reportedThis date has not been verified as actual or estimated.
May 1, 2008
Actual (reported)May 6, 2008
Actual (reported)December 2008
Actual (reported)December 2008
Actual (reported)The principal objective is to determine the ability of the VRI to assess changes in the lungs before and after pulmonary intervention in patients suffering from airway obstruction.
Baseline and follow-up up to 3 months
The secondary objective is to assess the contribution of the VRI in aiding in identification of the pulmonary obstruction as compared to the standard methods prior the intervention procedure.
Baseline
Patients who present to the clinic with airway obstruction and who are designated to undergo intervention
12 seconds of recording lung sounds
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
Patients in the age range of 18-85 and consisting of both male and females, who present to the clinic with airway obstruction and who are designated to undergo intervention.
National Jewish Medical and Research Center
Denver, Colorado, 80602, United States
Duke University Medical Center
Durham, North Carolina, 27710, United States
Hospital St. Marguerite
Marseille, 13274, France
Thoraxklinik at Heidelberg University
Heidelberg, D-69126, Germany
St. Marianna Hospital
Kawasaki, Kanagawa, 216-8511, Japan
Dellinger RP, Parrillo JE, Kushnir A, Rossi M, Kushnir I. Dynamic visualization of lung sounds with a vibration response device: a case series. Respiration. 2008;75(1):60-72. doi: 10.1159/000103558. Epub 2007 Jun 4.
Ernst A, Feller-Kopman D, Becker HD, Mehta AC. Central airway obstruction. Am J Respir Crit Care Med. 2004 Jun 15;169(12):1278-97. doi: 10.1164/rccm.200210-1181SO.
Heinrich D Becker, M.D.
Thoraxklinik at Heidelberg University School of Medicine
First Submitted
May 1, 2008
First Posted
May 6, 2008
Study Start
February 2006
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
December 2008
Actual (reported)Contact the study team to confirm eligibility.
Study Completion
December 2008
Actual (reported)Last Updated
June 16, 2009
Record last verified: 2009-06
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Source: ClinicalTrials.gov.
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