Intraoperative duplex monitoring of the carotid bifurcation for the detection of technical defects.

Objectives: Intraoperative Duplex examination can be used to identify technical imperfections during carotid endarterectomy. The objectives of this study were: (1) to evaluate the technical feasibility of intraoperative Duplex; (2) to compare Duplex findings with contrast arteriography; (3) to correlate intraoperative Duplex findings with postoperative complications and with Duplex data obtained during follow-up.

Design: Prospective clinical study.

Stenosis development at the distal anastomosis of prosthetic bypasses for aortoiliac occlusive disease. Incidence and accuracy of colour flow duplex in the diagnosis.

When bypasses for aortoiliac occlusive disease fail they often do so because of a stenosis at the distal anastomosis. To assess the incidence of stenotic lesions and to establish the diagnostic reliability of colour-flow Duplex scanning, we investigated 103 aortoiliac and aortofemoral bypasses using intravenous (i.v.

Impact of a color-flow duplex surveillance program on infrainguinal vein graft patency: a five-year experience.

Purpose And Methods: The contribution of color-flow duplex surveillance to improving vein graft patency was evaluated in two patient groups after 201 infrainguinal bypass procedures were performed during a 5-year period. Incidence of revision procedures and the primary and assisted primary patency rates were compared for 160 bypass grafts monitored during the first 2 years by use of color-flow duplex scanning of the vein graft and adjacent arterial segments (color-flow surveillance group) versus 41 bypass grafts monitored by use of clinical assessment alone (clinical follow-up group). Only grafts that were patent after the first postoperative month are considered.