流行病学调查估计全国现有高血压患者2亿人。中老年人群中有一半以上患有不同程度的高血压,其中单纯收缩期高血压(isolated systolic hypertension,ISH)是中老年人最常见的类型,这使得对脉压增宽的研究显得尤为重要。目前国内外研究也已提示,脉压是心脑血管疾病发生和死亡的独立预测因子,其价值 Epidemiological survey estimated the country existing 200 million hypertensive patients. More than half of the middle-aged and elderly people suffer from varying degrees of hypertension, of which isolated systolic hypertension (ISH) is the most common type of middle-aged and elderly people, making the study on pulse pressure widening particularly important. At present, domestic and foreign studies have also suggested that pulse pressure is an independent predictor of cardiovascular and cerebrovascular disease occurrence and death, its value