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Endovascular Treatment More Likely to Avoid Amputation or Death for Limb-Threatening Artery Disease

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05/05/2023
birmingham.ac.uk

In patients with chronic limb threatening ischaemia (CLTI) due to atherosclerosis affecting the arteries below the knee, data from the first clinical trial of its kind shows that a best endovascular treatment first revascularisation strategy was more likely to prevent major amputation and death than a vein bypass first strategy.

Published in the Lancet, the Bypass versus Angioplasty in Severe Ischaemia of the Leg (BASIL-2) randomised controlled trial (RCT), which was run through the University of Birmingham Clinical Trials Unit (BCTU), and which was funded by the National Institute for Health and Care Research (NIHR), compared two revascularisation strategies for restoring limb perfusion in patients with chronic limb-threatening ischaemia (CLTI) due to atherosclerosis affecting the arteries below the knee.

Patients from the UK, Sweden and Denmark were randomly assigned to either a vein bypass (VB) first or a best endovascular treatment (BET) first revascularisation strategy.

Patients who were randomised to VB first were one third more likely to require a major amputation or die during follow-up than patients who were randomised to BET, which in most cases comprised plain balloon angioplasty with selective use of stents.

Professor Andrew Bradbury, Sampson Gamgee Professor of Vascular Surgery at the University of Birmingham and Chief Investigator of the BASIL-2 trial said:

“Patients with chronic limb-threatening ischaemia generally have very poor prognosis and optimal strategies for restoring limb perfusion remain incompletely defined. BASIL-2 is only the third published RCT in patients with CLTI, and the only one to have specifically recruited patients who required intervention to arteries below the knee to restore blood flow to the lower leg and foot.

“There were many challenges to recruitment and follow-up, most recently due to the COVID-19 pandemic. However, BASIL-2 has now produced a statistically robust and clinically meaningful result that is likely to have an influence on the management of CLTI worldwide”

Professor Andrew Farmer, Director of NIHR’s Health Technology Assessment (HTA) Programme, which funded the trial, said:

“The findings of this important study are likely to greatly improve treatments for patients with this life-threatening and debilitating condition. Once again NIHR-funded research is providing vital evidence to drive forward outcomes for patients and better ways of delivering care for the NHS for those who plan and deliver services."

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Schedule29 May 2024