什么是脉压？脉压对整体健康有多重要？
回答 Francisco Lopez-Jimenez 博士
脉压由血压读数的两个数字决定。血压的测量单位是毫米汞柱（mm Hg）。
- 最上面的数字叫做收缩压，是指心脏跳动时的动脉血压。
- 最下面的数字叫做舒张压，是指两次心跳之间的动脉血压。
用最上面的数字减去最下面的数字就是脉压。
所以如果静息血压为 120/80 mm Hg，脉压就是 40，是正常脉压。在通常情况下，脉压大于 40 mm Hg 即视为异常。
医护团队通过检查您的脉压帮助预测您发生心血管事件（比如心脏病发作和卒中）的风险。脉压大于 60 属于心脏病的风险因素，尤其是对老年人。
体内最大动脉僵硬是老年人脉压升高的主要原因。高血压以及脂肪、胆固醇和其他物质在动脉壁上蓄积会导致动脉僵硬。脉压越大，血管越僵硬，受损越严重。
降压药无法降低脉压。需进一步研究了解药物如何影响不同人群的脉压。还需开展研究，以了解降低脉压是否可以预防心脏病发作和卒中，或者逆转此类事件造成的损害。
为保持心血管的健康，请考虑以下建议：
- 不要吸烟或使用电子烟。
- 健康饮食。
- 定期运动。
- 保持健康体重。
- 调节压力。
- 每天保持 7 到 9 小时的睡眠。
- 控制血压、胆固醇和血糖。
With
Francisco Lopez-Jimenez 博士
显示参考文献
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Original article: https://www.mayoclinic.org/zh-hans/diseases-conditions/high-blood-pressure/expert-answers/pulse-pressure/faq-20058189