超声心动图对原发性高血压老年患者左室舒张功能的评价

Assessment of left ventricular diastolic function in elderly patients with essential hypertension by echocardiogram

目的:应用超声心动图检测原发性高血压老年患者的左室舒张功能,评价二尖瓣、肺静脉的血液动力学变化。方法:取正常对照组30名,并按1999年WHO/ISH标准将46例高血压患者分为Ⅰ、Ⅱ、Ⅲ期。应用彩色多普勒超声检测各组左心舒张功能及血流动力学参数。结果:原发性高血压老年组左心舒张功能指标:Ⅰ期高血压二尖瓣E峰<A峰,Ⅱ、Ⅲ期高血压患者肺静脉心房收缩期逆向速率均高于对照组(P<0.01)。结论:原发性高血压老年患者存在显著血流动力学异常,主要表现为左室舒张功能减退,左房压增高,Ⅰ期高血压患者舒张功能与二尖瓣血流参数有良好的相关关系,能完整评价高血压左室舒张功能。

Objective：To observe the left ventricular diastolic function in elderly patients with hypertension and to evaluate the mitral valve homodynamic changes in the pulmonary vein by echocardiogram. Methods： Forty-six patients with hypertension were divided into grade Ⅰ , Ⅱ and Ⅲ according to the WHO/ISH standard established in 1999. Color Doppler Ultrasound was used to observe the left ventricular diastolic function and dynamic parameters of blcod flow of the patients. Results： The indexes of the left ventricular diastolic function in the elderly with hypertension were as follows： the mitral E peak was lower than A peak in patients with hypertension grade Ⅰ . The PVEA rate was higher than normal in patients with hypertension grade Ⅱ and grade Ⅲ （P 〈 0.01）. Conclusions：There exists significant abnormal homodynamics. The left ventricular diastolic function decreases and the left atrical pressure increases. The diastolic function of the elderly patients with hypertension grade Ⅰ is well correlated with the mitral blcod flow parameters,which may fully evaluate the left ventricular diastolic function of patients with hypertension.