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近年来,越来越多的证据表明,脉压差是心脑血管疾病发生和死亡的独立危险因子和高危标志,其对心脑血管病的预测作用远大于收缩压和舒张压,尤其是对于老年人。正常的脉压差为30~40毫米汞柱(mmHg)。当脉压差>40mmHg时,称为脉压差增大。脉压差增大是反映动脉弹性差的指标。随着年龄的增长,老年人动脉管壁结构、血管内皮功能发生改变,表现为动脉内膜增厚,中层胶原纤维增加,管壁的
In recent years, more and more evidences show that pulse pressure difference is an independent risk factor and a marker of high risk for the occurrence and death of cardiovascular and cerebrovascular diseases. Its prediction effect on cardiovascular and cerebrovascular diseases is far greater than systolic and diastolic pressure, especially for The elderly. Normal pulse pressure is 30 to 40 mm Hg (mmHg). When pulse pressure difference> 40mmHg, called pulse pressure difference increases. Increased pulse pressure difference is an indicator of poor arterial elasticity. With age, the aging of the artery wall structure, vascular endothelial function changes, manifested as thickening of the intima, the middle layer of collagen fibers increased, the wall