Acta Biomedica Scientifica (Feb 2013)
Significance of intaoperative duplex ultrasonography at the endovascular interventions on the lower limb arteries
Abstract
The article presents the results of intraoperative duplex ultrasonography (DUS) at the endovascular interventions (EV) in patients with occlusive-stenotic injuries of lower limb arteries. 48 segments of planned endovascular interventions (30 superficial femoral arteries and 18 popliteal arteries) were examined with use of common methods on ultrasound portable devise Unison 2-03 with 7,5 MHz linear sensor at all stages of endovascular treatment. The evaluation of hemodynamic indices of blood flow such as peak systolic velocity (PSV), ending diastolic velocity (Ved), medium, velocity of blood flow (Vm), resistivity index (RI), pulsatility index (PI), systole/diastole ratio (S/D) and. degree of stenosis of femoral-popliteal segment arteries before, during and. after X-ray-endovascular interventions was carried out. At intraoperative ultrasound duplex scanning patients had. significant (р < 0,001) decrease if PSV, Ved, Vm. and. the degree of stenosis in comparison with the results of the research before endovascular interventions. Also we registered significant (р < 0,001) decrease of PSV, Ved, Vm. and. the degree of stenosis in patients at ultrasound duplex scanning after endovascular interventions in comparison with the results of the research before operative treatment. There were no significant differences between those indices at ultrasound duplex scanning during and. after endovascular interventions. It was showed that evaluation of condition of lower extremities arteries during ballon angioplasty and. stenting with use of ultrasound duplex scanning allowed, to plan optimum volume and. to improve the results of endovascular operation in each patient individually. At that restoring of geometry and. artery lumina, accuracy of stent positioning, full compliance of stent diameter and. artery in problem zone, absence of stenosis at all or presence of residual stenosis < 25 % and. restoring of main blood flow without local increases of blood flow velocity were the criteria of successful endovascular interventions on femoral-popliteal segment arteries.
