METHOD FOR X-RAY ENDOVASCULAR INTRAOPERATIVE DETERMINATION OF THE SIGNIFICANCE OF LOWER EXTREMITIES ARTERIES STENOSIS Russian patent published in 2020 - IPC A61B17/00 A61B5/1459 

FIELD: medicine; cardiovascular surgery.

SUBSTANCE: invasive pressure is measured in arteries of lower extremities up to, in place, post-stenosis by means of catheter 6Fr, to which Y-click connector and invasive pressure sensor is connected. Stenosis is considered to be significant in systolic pressure gradient > 20 mm Hg or with average gradient > 10 mm Hg, in combination with reduced blood reserve of extremity (BRE) below 1.0, which is defined as the ratio of pressure after stenosis with underlying hyperaemia and pressure in a constant area, before stenosis.

EFFECT: method enables high-accuracy determination of significant stenosis and surgical intervention in the area of significant stenosis, which improves clinical effectiveness.

1 cl, 1 ex