PP.34.04

Abstract

Objective: To study the characteristics of cerebral hemodynamics in patients (pts) with pathological kinking (PK) of the internal carotid artery (ICA) on arterial hypertension (AH). Design and method: During the period from 2005 to 2014 in the department of cardiac surgery were treated 112 pts with PK ICA. Pts were divided into 4 groups: 17 (15%) pts had no AH, 20 pts (18%) -AH 1 stage, 47 pts (42%) had AH 2 stage, 28 pts (25%) - AH 3 stage. The average age of the pts was 62,7 ± 7,9 years. All pts underwent duplex scanning of brachiocephalic arteries with an estimate of blood flow velocities in the evaluation of the different phases of the cardiac cycle. The study of cerebral hemodinamics in pts with PK ICA and various stages of AH revealed a significant pattern: the higher stage of AH, the more likely to develop more severe hemodynamically S-shaped crimp and to identify more speed characteristics of blood flow in the ICA. Results: Table.1 Effect of AH stage on the linear velocity of blood flow (LVBF) in PK ICA.It should be noted that the S-shaped crimp met in 20% of pts without AH, 50% pts with AH 1 stage, in 64% with AH 2 stage, in 88% of pts with AH stage 3 (p = 0,06). Speed characteristics of cerebral blood flow in pts with AH 2 stage higher than those in pts with AH 1 stage at 37–43%. The maximum speed values were found in pts with AH 3 stage, they were higher than in pts with AH 2 stage at 15–31% and higher than that of pts with AH 1 stage at 58–87%. Conclusions: AH has a significant impact on cerebral blood flow: with increasing stage of AH is an increase in blood flow velocity at the ICA. Possible high blood pressure contributes to the development of adverse S-strain ICA.