FMD is a noninvasive test that USES a blood pressure cuff and ultrasound to see how blood flows in the brachial artery when the arm is gently squeezed.

FMD是一种使用血压袖带及超声的一种非创伤性检查来测定当手臂受压时分支动脉的血流情况。

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So if you are measuring brachial blood pressure which is a much smaller tube than the central large artery and the more pliable the vessel is the less likely there is to be a difference.

因此，如果在检测肱动脉(一个远小于中心大动脉的血管)血压时，血管越柔韧，产生压力误差的可能性就越小。

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On the one hand, the measuring object of so-called arterial pressure that we usually refer to aortic blood pressure, in the clinical practical, actually, is brachial artery.

首先，临床动脉血压测定的对象都是上臂肱动脉，而一般所指的动脉血压实际上应当是中心主动脉血压。

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