Validation of Pulse Wave Doppler Demodulation Algorithm for the Continuous, Non-invasive Measurement of Blood Flow Velocity
1 other identifier
observational
10
1 country
1
Brief Summary
The investigators hypothesize that performance of fast-Fourier transformation on the raw Doppler signals obtained from ascending aortic blood flow will recreate the pulse wave Doppler trace visualized on modern echocardiography machines, and that this will allow for the measurement and recording of vascular flow waveforms
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at below P25 for all trials
Started Dec 2012
Shorter than P25 for all trials
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
December 1, 2012
CompletedFirst Submitted
Initial submission to the registry
December 12, 2012
CompletedFirst Posted
Study publicly available on registry
December 17, 2012
CompletedPrimary Completion
Last participant's last visit for primary outcome
January 1, 2013
CompletedStudy Completion
Last participant's last visit for all outcomes
January 1, 2013
CompletedMay 1, 2014
April 1, 2014
1 month
December 12, 2012
April 30, 2014
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Comparison between estimated arterial flow waveform and pulse wave Doppler trace
Estimated arterial flow waveform using fast Fourier transformation (FFT) will be compared to the pulse wave Doppler trace from the device
day of procedure
Study Arms (1)
Healthy subjects
In these health subjects we will measure ascending aortic blood flow with pulse wave Doppler and also record the raw audio of the Doppler signal
Interventions
Eligibility Criteria
Healthy subjects 18-65
You may qualify if:
- Healthy
You may not qualify if:
- Cannot visualize ascending aorta with ultrasound
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
University of Virginia
Charlottesville, Virginia, 22908, United States
Study Design
- Study Type
- observational
- Observational Model
- COHORT
- Time Perspective
- PROSPECTIVE
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
December 12, 2012
First Posted
December 17, 2012
Study Start
December 1, 2012
Primary Completion
January 1, 2013
Study Completion
January 1, 2013
Last Updated
May 1, 2014
Record last verified: 2014-04