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Ankle Arterial Doppler Waveform Assessment For Surveillance Following Lower Limb Revascularisation
Sponsor: Imperial College London
Summary
The goal of this observational study is to determine the diagnostic performance of serial ankle arterial Doppler waveform assessments in detecting significant arterial restenosis in patients with Peripheral Arterial Disease (PAD) undergoing lower limb revascularization. The main questions it aims to answer are: Can serial ankle Doppler waveform assessments accurately detect restenosis following revascularization? How cost-effective is this method for long-term patient surveillance? Researchers will compare the results of serial visual Doppler waveform assessments (handheld continuous-wave and pulsed-wave Doppler) with full lower limb arterial duplex ultrasound (DUS) to determine if the Doppler devices provide a comparable diagnostic performance. Participants will: Undergo regular pre- and post-revascularization ankle waveform assessments. Participate in follow-up surveillance visits at 3, 6, and 12 months.
Key Details
Gender
All
Age Range
18 Years - Any
Study Type
OBSERVATIONAL
Enrollment
121
Start Date
2024-10-10
Completion Date
2026-06-30
Last Updated
2024-10-01
Healthy Volunteers
No
Conditions
Interventions
Duplex Ultrasound
The primary intervention in this study is the use of ankle Doppler waveform assessment for post-revascularisation surveillance in patients with Peripheral Arterial Disease (PAD). This technique utilises continuous-wave Doppler (CWD) and pulsed-wave Doppler (PWD) to assess the blood flow in the key ankle arteries, including the dorsalis pedis artery (DPA) and posterior tibial artery (PTA).