Vibration Response Imaging in Chronic Obstructive Pulmonary Disease and Asthma

Completed

• Conditions: Chronic Obstructive Pulmonary Disease; Asthma

• Registration Number: NCT00542282
• Lead Sponsor: Deep Breeze

Brief Summary

Obstructive lung disease is usually a differential diagnostic consideration when a patient presents with breathlessness or cough. Spirometry is the key diagnostic test used to confirm airflow obstruction particularly in the primary care setting. Airflow obstruction that completely resolves after administration of a bronchodilator, by definition, excludes a diagnosis of COPD. Evaluation of obstructive lung disease must include pulmonary function testing; bronchoreversibility testing is an adjunct in differentiating between asthma and COPD. Bronchoreversibility cannot serve as an absolute diagnostic criterion for separating asthma from COPD.

Vibration response imaging (VRI) technology provides a simple, radiation-free method to image the lungs, by visualizing vibration energy (lung sounds) emitted during respiration cycle. In this study, regional quantitative and qualitative information on vibration response is compared with spirometry in assessing lungs function of COPD and Asthma patients.

Detailed Description

Not available

Study Timeline

• Study Start: 2006-11
• Study Completion: 2007-08
• Study First Submitted: 2007-10-10
• Study First Submitted QC: 2007-10-10
• Study First Posted: 2007-10-11
• Status Verified: 2009-06
• Last Update Submitted: 2009-06-15
• Last Update Posted: 2009-06-16

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 75

Inclusion Criteria

• Able and willing to read, understand, and provide written Informed Consent
• Male or Female in the age range of 18-85 years
• Patients referred for evaluation of known or suspected obstructive airways disease.
• Subject is referred for pulmonary function testing with pre-and post- bronchodilator
• BMI > 21
• Patients who are treated with Bronchodilators should go through a washout period prior the VRI procedure according to the Pulmonary Function Laboratory protocol.
• Stable clinical condition at study baseline evaluation.

Exclusion Criteria

• Chest wall deformation
• Spine deformation (including severe scoliosis)
• Hirsutism
• Potentially contagious skin lesion on the back
• Skin lesion that would interfere with sensor placement
• Pregnant or lactating females.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
The primary study objective is evaluation of the VRI qualitative and quantitative assessment before and after spirometry with bronchodilators.	One day

Secondary Outcome Measures

Name	Time	Method
The secondary objective is correlating the VRI evaluations with lung function test results	One day

Trial Locations

Locations (1)

Baylor College of Medicine; 🇺🇸 Houston, Texas, United States