Use of Amplified Sound Signal to Identify Presence of Carotid and Femoral Stenosis
Trial Snapshot
- Phase
- Not Applicable
- Status
- Terminated
- Enrollment
- 18
- Locations
- 1
- Primary Endpoint
- Comparison of bruit signal obtained from the amplified stethoscope(AudioDoc) to that found by conventional ultrasonography.
Study Overview
Brief Summary
The purpose of the study is to test a new amplified stethoscope(AudioDoc) that can detect the presence of bruit by using an acoustic signal to represent the bruit. This pilot study will address two questions: is there a detectable difference in recorded sound signal of carotid and femoral bruit when compared to sound signals captured when there is no bruit present; is the use of a visual recorded signal more accurate in identifying carotid and femoral bruit when compared to traditional auscultation with a regular stethoscope and ultrasound.
Detailed Description
Recorded signals are stored on a laptop computer. The signals later undergo Fourier analysis are then compared to the findings on carotid ultrasoud as to degree of stenosis. Subjects with high grade stenosis in which no bruit was ascultated but in which carotid ultrasound data suggests a bruit may be present are studied for soft /inaudible bruits. When available, data will be correlated to CT/conventional angiographic studies.
Study Design
- Study Type
- Observational
- Observational Model
- Case Only
- Time Perspective
- Prospective
Eligibility Criteria
- Ages
- 19 Years to 90 Years (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
- •age 19-90 years
- •having clinical ultrasound evaluation of carotid or femoral artery
Exclusion Criteria
- •under age 19; over age 90 years
Outcomes
Primary Outcomes
Comparison of bruit signal obtained from the amplified stethoscope(AudioDoc) to that found by conventional ultrasonography.
Time Frame: subjects will be followed for duration of hospital stay, typically four days.
Secondary Outcomes
- To assess the frequency spectral differences obtained from the different recording modalities(duration of hospital stay, typically four days)
Investigators
Jonathan Dissin, MD
Principal Investigator
Albert Einstein Healthcare Network