Clinical trials investigating the management of aortic aneurysms, aortic dissection and other aortic pathologies including EVAR and open repair techniques.
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RecruitingEVAAR-UK
12 May 2026
By Dr Helen Marsh
Recruitment to the national trial comparing endovascular and open repair of abdominal aortic aneurysms has now exceeded 100 patients, keeping the study on track for its 280-participant target.
Read more →EVAR-1 fundamentally changed how we manage abdominal aortic aneurysms. The trial showed lower 30-day mortality for EVAR but no long-term survival advantage. Its legacy is the framework for shared decision-making in AAA repair.
CAESAR investigated whether early EVAR for small AAAs (4.1–5.4 cm) improved outcomes compared with ultrasound surveillance. No survival benefit was found for early repair. The trial confirmed that the 5.5 cm threshold for intervention remains appropriate.