Clinical Trial: Use of Amplified Sound Signal to Identify Presence of Carotid and Femoral Stenosis

Study Status: Terminated
Recruit Status: Terminated
Study Type: Observational

Official Title: Use of Amplified Sound Signal to Identify Presence of Carotid and Femoral Stenosis

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 Summary: 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.
Sponsor: Albert Einstein Healthcare Network

Current Primary Outcome: 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. ]

Original Primary Outcome: Same as current

Current Secondary Outcome: To assess the frequency spectral differences obtained from the different recording modalities [ Time Frame: duration of hospital stay, typically four days ]

Original Secondary Outcome: Same as current

Information By: Albert Einstein Healthcare Network

Dates:
Date Received: May 2, 2012
Date Started: April 2010
Date Completion:
Last Updated: January 31, 2017
Last Verified: January 2017