Study Of Left Ventricular Cardiac Function In Patients With Hypertension By Strain Rate Imaging

Objective: To explore the clinical value of strain rate imaging(SRI)technology in comparing the left ventricular cardiac function in patients with coronary heart disease and hypertension.Methods: Twenty-nine healthy volunteers(groupA),forty patients with coronary heart disease (groupB), there were nineteen patients with angina pectoris(groupB1)and twenty-one patients with myocardium infarction(groupB2) duing them,fifty-two patients with hypertension(groupC),they were divided into two groups with respect to ambulatory BP profiles as dippers(groupC1) and nondippers(groupC2), twenty patients with essential hypertension and coronary heart disease(groupD) were examined by SRI. PSR during systole was measured .MPSSR was obtained. Numbers of PSS segments were calculated in t left ventricular segments.Results: MPSSR of groups B1, B2, C1, C2 and D were significantly lower than those of group A; mPSSR of group B2 was significantly lower than those of groups B1 and D; mPSSR of groups D and C2 was significantly lower than those of group C1.The presentation of PSS in the left ventricle of groups B and D were significantly lower than those of groups A and C, while the differences of them between groups A and C and between groups B and D were not significant.Conclusions: Patients with coronary heart disease and hypertension appeared reduced left ventricular longitudinal systolic function. Non-dipper hypertensive myocardial systolic function damage is severer than dipper group. PSS is a common sign for myocardial ischemia. Wall PSSR can be used as quantitative assessment of myocardial damage and the severity of the main index. SRI, as a new and accurate method quantitatively evaluates the left ventricular systolic function in patients with hypertension.