老年人纯收缩期高血压与主动脉输入阻抗

Aortic input impedance and isolated systolic hypertsion in elderly patients

采用超声心动图法，观察５２例老年高血压患者的主动脉输入阻抗（ＡＩＩ），其中纯收缩期高血压（ＩＳＨ）２４例，普通型高血压（ＣＨ）２８例。结果显示，老年高血压组主动脉内径和ＡＩＩ都显著高于同年龄组正常人；ＩＳＨ组中室间隔增厚明显，左室结构大多呈非对称性或单纯性室间隔肥厚类型，ＡＩＩ与收缩末期室壁应力（ＥＳＳ）呈正相关（ｒ＝０．７２，Ｐ＜０．０１）。提示ＡＩＩ增高是ＩＳＨ发生的重要因素，同时对左室结构重建过程也发挥重要影响。

In this study,the changes of aortic input impedance(AII) were observed in 52 elderly patientswith essential hypertension(EH),(isolated systolic hypertension,ISH in 24 and classifical hypertension,CH in 28),by echocardiography.The restilts showed that AII and aortic dimension of all patients were sig-nificantlg higher than that in normal.In ISII group,the interventricular septal thickness(IVST)was signif-icant by increase and asvmmetric of isolated septal hypertrophy patients were found in left ventricularstructure,It suggested that increasing of AII might be an important factor in development of ISH and inremodeling of left ventricular structure.