Ankle Arterial Doppler Waveform Assessment For Surveillance Following Lower Limb Revascularisation

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.