[Colour duplex scanning in assessing efficacy of roentgeno-endovascular operations on lower-limb arteries]

The authors analysed efficacy of colour duplex scanning (CDS) in patients after roentgen- assisted endovascular interventions on lower-limb arteries. The study comprised 303 patients presenting with chronic obliterating diseases of lower extremities, who underwent a total of 456 endovascular interventions, including 375 stenting procedures. Efficacy of roentgen-assisted endovascular interventions was assessed l-to-3 days after surgery. We determined the main ultrasonographic criteria for successful balloon angioplasty, i. е., vessel's geometry restoration, haemodynamic alterations in the endovascular intervention site, the presence of residual stenosis less than 25%, accuracy of stent/stents' positioning, commensurability of the diameters of the stent and artery, exclusion of the aneurysm from blood flow. Also studied were ultrasonographic criteria for arterial complications following endovascular interventions, including thromboses of the zone of angioplasty the stent, the presence of less-than-25-percent stenosis, subintimal insertion of the stent, incomplete opening of the stent, incomplete capture of the stenosis area by the stent, and stent dislocation. CDS is an important method to assess evaluating efficacy of roentgen-assisted operations and the state of arteries after angioplasty.