ORTHOSTATIC TORTUOSITIS TRANSFORMATION OF THE NECK’S MAIN ARTERIES
Among 350 surveyed deformations of internal carotid arteries revealed in 38.6% of cases. At pathological deformation observed acceleration of flow speed indicators from 55% to 65% in part of tortuosity, average value of systolic speeds of a blood flow was 166±28.3 cm/s at the left and 174±30.2 cm/s at the right side. In vertical position in 31.6% of cases at pathological deformation observed transfor mation of tortuosity form. deformation corners became blunt, the gradient of flow speed indicators decreased or was absent, in some cases course of internal carotid arteries became rectilinear. Artificial deformations of vertebral arteries course revealed in 79.4% of people, average value of systolic speed of a blood flow was 92±15.3 cm/s at the left and 76±12.5 cm/s at the right side. In vertical position in deformations of the vertebral arteries, which carried to pathological, in 28.8% of cases a form of deformation was transformed to unpathological tortuosity. duplex sonography in vertical position in patients with tortuosity discovered new approaches in diagnostics of pathological deformations and defines indications to operative treatment.