左室内血流传播速度对高血压患者左室舒张功能的评价

Assessment of Diastolic Function in Hypertensive Patients by Left Ventricular Flow Propagation Velocity

目的:应用彩色M型多普勒超声心动图测量舒张早期左室内血流传播速度(Vp),评价高血压(EH)患者左室舒张功能,以寻求一种可靠客观的评价高血压左室舒张功能的方法。方法:采用放免法测定19例正常人和41例EH患者(伴心肌肥厚者19例和不伴心肌肥厚者22例)的血清Ⅰ型前胶原(PCⅠ)和Ⅲ型前胶原(PCⅢ)的浓度,用彩色M型多普勒超声心动图测量左室内血流传播速度(Vp),并用血流多普勒法检测二尖瓣口舒张期血流速度E峰、A峰及E/A值,比较两种方法测值与PCⅠ、PCⅢ的相关性。结果:1.EH患者非左室肥厚组(non-LVH)与左室肥厚组(LVH)PCⅠ、PCⅢ明显高于正常对照组(P<0.01),其中LVH组PCⅠ明显高于non-LVH组(P<0.05)。2.EH患者非左室肥厚组(non-lVH)与左室肥厚组(LVH)二尖瓣血流参数,Vp均明显低于正常对照组(P<0.05)。3.EH患者non-LVH组与LVH组间E、E/A无明显差别(P>0.05),但LVH组Vp明显低于non-LVH组(P<0.05)。4.EH患者non-LVH组血清PCⅠ、PCⅢ与E/A及Vp均呈负相关(r=-0.58P<0.01,r=-0.61P<0.01及r=-0.67P<0.01,r=-0.51P<0.05);而LVH组血清PCⅠ、PCⅢ与Vp亦呈负相关(r=-0.69P<0.05,r=-0.65P<0.01);与E/A无明显相关(r=-0.41P>0.05,r=0.02P>0.05)。结论:左室内血流传播速度与反应心肌纤维化程度的血清PCⅠ、PCⅢ浓度相关良好,不受心脏负荷及年龄的影响,作为评价高血压病人左室舒张功能的指标有临床意义。

Objective To evaluate the Left Ventricular function in the patients with hypertension.The propagation velocity(Vp) of early flow into the left ventricular cavity was measured by color M-mode Doppler echocardiography.Methods Fourty-one essential hypertensive patients[19 pationts with left ventricular hypertrophy(LVH) and 22 pationts with left ventricular hypertrophy(non-LVH)]and 19 normotensive control subjects(NT) were enroned.]The serum concentrations of procollagen typel(PCⅠ) and procollagen Ⅲ(PCⅢ) in all...