Use of Amplified Sound Signal to Identify Presence of Carotid and Femoral Stenosis
试验速览
- 阶段
- 不适用
- 状态
- 终止
- 入组人数
- 18
- 试验地点
- 1
- 主要终点
- Comparison of bruit signal obtained from the amplified stethoscope(AudioDoc) to that found by conventional ultrasonography.
研究概览
简要总结
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.
详细描述
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.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Only
- 时间视角
- Prospective
入排标准
- 年龄范围
- 19 Years 至 90 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •age 19-90 years
- •having clinical ultrasound evaluation of carotid or femoral artery
排除标准
- •under age 19; over age 90 years
结局指标
主要结局
Comparison of bruit signal obtained from the amplified stethoscope(AudioDoc) to that found by conventional ultrasonography.
时间窗: subjects will be followed for duration of hospital stay, typically four days.
次要结局
- To assess the frequency spectral differences obtained from the different recording modalities(duration of hospital stay, typically four days)
研究者
Jonathan Dissin, MD
Principal Investigator
Albert Einstein Healthcare Network