Randomized study to evaluate the effect of adding a vein collar at the distal anastomosis to PTFE-grafts used for bypass to below knee arteries in patients with critical limb ischemia with respect to primary patency, secondary patency, and limb salvage
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
352
Vein collar interposed at the distal anastomosis or No vein collar interposed at the distal anastomosis
Department of CardioVascular Surgery, University Hospital
Linköping, Sweden
Primary graft patency
Follow-up at 1, 3, 6, and 12. Thereafter at most 5 years or until death of patient or amputation of limb. Primary graft patency = patent graft without any intervention to open up or prevent a graft ocklusion. Methods used for verification of patency: angiography, duplex, an improved ankle-brachial index was mantained, palpable pulse, or bi- or triphasic Doppler signal over the graft.
Time frame: Up to five years
Secondary Patency
Secondary patency = patent graft after one or several interventions to open up or prevent a graft occlusion. Methods used for verification of secondary patency: angiography, duplex, an improved ankle-brachial index was mantained, palpable pulse, or bi- or triphasic Doppler signal over the graft.
Time frame: Up to five years
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