The meaning of blood pressure.

The meaning of blood pressure.
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DOI:
10.1186/s13054-018-2171-1
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发表时间:
2018-10-11
期刊:
Critical care (London, England)
影响因子:
--
通讯作者:
Magder S
Magder S
中科院分区:
其他
文献类型:
--
作者:
Magder S

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动脉压测量是患者管理的最基本要素之一。动脉压是由心脏向动脉中喷射的体积、动脉壁的弹性和血液流出动脉的速度决定的。这篇综述将讨论决定容器压力的三种力:弹性、动能和重力。重点将放在动脉阻力分布的重要性,大血管壁的弹性,以及小动脉和小动脉的临界关闭压力。动脉压的调节是通过心输出量的变化和血管阻力的变化来实现的,但这两个控制变量有时会发生冲突。
Measurement of arterial pressure is one of the most basic elements of patient management. Arterial pressure is determined by the volume ejected by the heart into the arteries, the elastance of the walls of the arteries, and the rate at which the blood flows out of the arteries. This review will discuss the three forces that determine the pressure in a vessel: elastic, kinetic, and gravitational energy. Emphasis will be placed on the importance of the distribution of arterial resistances, the elastance of the walls of the large vessels, and critical closing pressures in small arteries and arterioles. Regulation of arterial pressure occurs through changes in cardiac output and changes in vascular resistance, but these two controlled variables can sometimes be in conflict.
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