二维斑点追踪显像技术对不同构型高血压患者收缩后收缩的研究

摘要

目的：：研究应用二维斑点追踪显像(2D-STI)技术对不同构型高血压患者左室长轴方向心肌收缩后收缩(PSS)的现象。方法：将60例原发性高血压患者按照不同构型分为左室正常构型组(LVN 组)22例，左室重构组(LVR 组)38例，对照组30例，运用2D-STI技术检测左室壁心肌运动，记录收缩期峰值速度(Vs )、PSS节段数及 PSS峰值速度(Vpss)。结果：LVN 组和LVR组PSS阳性率及 Vpss与对照组比较差异有统计学意义(P <0.05)，均表现为 LVR 组>LVN 组>对照组。结论：2D-STI技术检测高血压患者PSS的出现，提示局部心肌存在相对缺血，是导致舒张功能减低的早期表现。%Objective:To explore the phenomenon of Postsystolic shortening in Patients with essential hyper-tension with different pattern of left ventricular by two-dimensional speckle tracking imaging.Methods:Sixty patients with essential hypertension were divided into two subgroups based on left ventricular config-uration including Left ventricle normal geometric(LVN group,n =22)and Left ventricular remodeling (LVR group,n=38).30 normal subjects were enrolled.Detected myocardial movement of Left ventricular by 2D-STI,record the peak velocity of contraction,number of PSS and the peak velocity of PSS.Results:The positive rate and peak velocity of PSS in hypertension were significantly different from the control group,which showed as LVN group >LVN group >controls.Conclusion:PSS in Patients with Essential Hypertension reminder that there are relatively myocardial ischemia in parts of the myocardium.It’s a ear-ly sign of diastolic function reduce.