Velocity Vector Imaging In Hypertensive Patients With Ascending Aortic Mechanical Motion State

In this study, velocity vector imaging (VVI) evaluate changes in patients with essential hypertension liter aortic mechanical state of motion, preliminary study aimed at patients with essential hypertension before the long axis of the ascending aorta wall, posterior movement of the points characteristic velocity, strain and strain rate. Select40cases of essential hypertension, according to their blood pressure levels were divided into2groups, one group of1for the critical hypertension and hypertensive level (HP1) were20,2for grade two hypertension (HP2) and three (HP3) a total of20people, with20healthy volunteers as normal control group.Use Siemens ACUSON-S2000Series color Doppler ultrasonography and frequency of2.0-4.5MHz frequency probe were to get the4P1hypertension group and normal control group, the long axis of the ascending aorta two-dimensional image, dynamic storage. Using the built-in VVI software system for off-line analysis, selection of ascending aortic wall, posterior wall long axis plane of the systolic and diastolic maximum velocity (Vs), maximum tangential strain (Smax) and the maximum tangential strain rate (SRmax) were compared. The results show:the anterior wall of ascending aortic wall systolic to diastolic motion, the downward movement, the systolic diastolic motion after downward, upward movement, hypertension or anterior aortic long axis and the posterior wall of the systolic and diastolic velocity (Vs), strain (Smax) and strain rate (SRmax) are less than that of the control group. With hypertension group1, hypertension group2liters of anterior wall and posterior wall of the aortic long axis systolic and diastolic velocity (Vs), strain (Smax) and strain rate (SRmax) are less than groups1.Studies have shown that VVI technique can accurately the ascending aorta in patients with primary hypertension wall motion velocity, strain and strain rate on quantitative analysis of the routine inspection found no obvious abnormal structure and function of the ascending aorta tip hypertension before the damage of the ascending aorta. VVI technique is simple, accurate, is expected to become the new method for evaluation of primary hypertension elasticity of the ascending aorta.