Can a tiny doppler turn blood flow sounds into pictures to save rebuilt tissue?
NCT ID NCT07823283
First seen Sep 16, 2026 · Last updated Sep 21, 2026 · Updated 2 times
Summary
Researchers at Mayo Clinic are studying whether an implantable Doppler monitor can record the sound of blood flowing through a free flap and convert it into a visual signal. The trial enrolls 100 adults scheduled for free flap surgery, a procedure that moves tissue to rebuild parts of the head or neck. Participants will have the Doppler monitor placed during surgery. The study team will check whether they can capture at least two recordings per day and turn those sounds into stored visual data. The goal is to see if this approach is feasible for helping care teams monitor flaps and possibly prevent failure.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If the recording works, surgeons could one day watch blood flow through a rebuilt flap as a visual signal instead of relying only on sound, which may help them catch problems earlier.
- What could go wrong
- This is an early feasibility study with 100 people, so it only tests whether signals can be recorded and converted, not whether that prevents flap failure. The device may not capture clean signals in every patient.
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Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 100 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Sep 2026
- Expected to finish
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Sep 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
Patients scheduled to undergo free flap surgery with an implantable doppler
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Scheduled for free flap surgery and planned to have an implanted doppler monitor * Arterial Doppler waveforms available for analysis * Able and willing to sign consent and return for clinical follow up * Age ≥ 18 years Exclusion Criteria: * Prior head and neck surgery within the region where surgeons plan to identify donor vessels ≤ 365 days prior to registration
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The study's own enquiry address
This study publishes an address for enquiries. See it below .
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
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Study contacts
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Contact
Email: •••••@•••••
Locations
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Mayo Clinic in Rochester
RECRUITINGRochester, Minnesota, 55905, United States
Contact Email: •••••@•••••
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