This study is being done to see whether signals from a device that monitors blood flow through the free flap can be recorded and converted from an audible signal, like a heartbeat, into a visual signal. Researchers plan to use this information to ultimately help surgeons and care teams monitor free flaps to try to prevent flap failure.
Study Type
OBSERVATIONAL
Enrollment
100
Non-interventional study
Mayo Clinic in Rochester
Rochester, Minnesota, United States
RECRUITINGFeasibility - record audible doppler signal tracings
Ability to record a minimum of 2 audible doppler signal tracings from the implantable doppler per 24 hours for a minimum of one 24 hour period for 80% of subjects. Analysis of the primary endpoint will be done in a binary (yes/no) fashion to describe the feasibility of the proposed research recording device (RRD) to record and convert recorded signals into various visual formats. Recordings will be observed by study staff to determine whether auditory acuity matches expected signals.
Time frame: Up to 30 days
Feasibility - convert audible doppler signal tracings to stored data files
Ability to convert the recorded doppler signal tracings to stored data files for 80% of subjects. Analysis of the primary endpoint will be done in a binary (yes/no) fashion to describe the feasibility of the proposed RRD to record and convert recorded signals into various visual formats.
Time frame: Up to 30 days
Feasibility - convert audible data to visual signal to a visual signal
Ability to convert a minimum of 80% of the audible data files to a visual signal. Analysis of the primary endpoint will be done in a binary (yes/no) fashion to describe the feasibility of the proposed RRD to record and convert recorded signals into various visual formats. Visual displays will be observed by study staff to confirm the display matches the expected form, as informed by prior experience/literature with doppler studies of peripheral vasculature. The specific methods for visualization will include a multimodal approach that includes Doppler signal time-series waveform, spectrogram, and Fourier Transform.
Time frame: Up to 30 days
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