[The predictiveness of the duplex scan method in monitoring a venous femoro-distal bypass].

The medium-term failure of femoro-distal revascularization using venous bypass is often preceded by the onset of intrinsic intraprosthetic lesions which, if not diagnosed, may develop and cause thrombosis in the venous prosthesis. The authors report their experience relating to the monitoring of these bypass operations using an echo-Doppler test which was found to be a sensitive and reliable method. In their opinion, frequent instrumental control may significantly reduce the number of occlusions in the venous prosthesis if a rapid surgical therapeutic approach is adopted towards those intraluminal lesions considered to represent a risk.