目的：探讨单纯舒张期高血压(IDH)对心血管事件(CVD)发生的危险性。

Objective: to explore the risk of isolated diastolic hypertension (IDH) to the cardiovascular disease (CVD).

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近40% 40岁以下的病人患有单纯舒张期高血压，而40-50岁之间的患者可能有三分之一为单纯舒张期高血压。

Up to 40% of patients aged less than 40 years have isolated DH, while this figure is around a third in patients aged 40 to 50 years.

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方法采用高分辨力超声无创性检测血管内皮依赖性舒张功能的方法比较收缩期和舒张期高血压（SDH）与正常血压组血流介导性舒张（FMD）与反应性充血的血管内皮依赖性舒张功能。

Methods A non-invasive high-resolution ultrasound was used to detect the flow-mediated dilatation (FMD) and the change of blood flow volume of reactive hyperaemia in SDH and the control.

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