Treatment of Popliteal Artery Aneurysm with Clot

Initial Management

The American Heart Association recommends that patients with acute ischemia due to thrombosed popliteal aneurysm should receive immediate unfractionated heparin and appropriate analgesia 3
Urgent imaging with ultrasound is the most rapid means to confirm diagnosis of a thrombosed popliteal aneurysm, as suggested by the American College of Cardiology 1
The presence of a prominent popliteal pulse in the opposite leg may suggest bilateral popliteal aneurysms, which occur in approximately 50% of cases, according to the European Society of Cardiology 1, 4

For acute ischemia with absent runoff, the American College of Cardiology strongly recommends catheter-directed thrombolysis or mechanical thrombectomy (or both) to restore distal runoff and resolve emboli 1, 2

After restoration of runoff, the Society for Vascular Surgery recommends surgical bypass as the standard treatment 5, 6
Bypass options include saphenous vein grafts, which provide superior long-term patency and limb salvage rates, as recommended by the American Heart Association 5
PTFE grafts are approximately twice as likely as polyester filament grafts to remain patent when autologous vein is unavailable, according to the European Society of Cardiology 5

Without proper treatment, up to 19% of patients with symptomatic popliteal aneurysms may require amputation despite surgical repair, as reported by the American College of Cardiology 7
Consider fasciotomy in cases with prolonged ischemia to prevent compartment syndrome, as suggested by the Society for Vascular Surgery 6

For asymptomatic popliteal aneurysms, the American Heart Association strongly recommends repair for aneurysms ≥2.0 cm in diameter to reduce thromboembolic complications and limb loss 1, 7
Annual ultrasound monitoring is reasonable for asymptomatic enlargement less than 2.0 cm, as recommended by the European Society of Cardiology 1
Up to 50% of untreated asymptomatic popliteal aneurysms become symptomatic within 2 years and 75% within 5 years, according to the American College of Cardiology 7
Screen for other aneurysms, as approximately 50% of popliteal aneurysms are bilateral and 50% are associated with other aneurysms, particularly abdominal aortic aneurysms, as suggested by the Society for Vascular Surgery 4, 8

European Heart Journal, 2018

Circulation, 2006