Yeol Joe W, Ryu Yeong S, Blank Seymour G
Dept. of Mechanical Eng., Columbia Univ., New York, NY 10027, USA.
Conf Proc IEEE Eng Med Biol Soc. 2006;2006:5985-8. doi: 10.1109/iembs.2006.260746.
Aa new method of measuring blood pressure (BP) is presented. This technique involves automatic analysis of the wideband external pulse (WEP) recorded by a pressure sensor positioned over the brachial artery during standard BP cuff deflation. Three distinct components of this "K" or "WEP" signal can be defined: K1, K2, and K3 [1]. Each component has a different shape and "appearance/disappearance property. K1 is a low frequency inaudible signal present with cuff pressure above systolic. The K2 signal appears at SP and disappears at Dp (K2-algorithm) and can be used to measure BP. Using this property, the "K2-algorithm" has been shown to be more accurate than the auscultatory technique [1]. To implement an automatic measurement using the K2-algorithm, signal processing techniques are applied to K signals.
提出了一种测量血压（BP）的新方法。该技术涉及在标准血压袖带放气期间，对置于肱动脉上方的压力传感器记录的宽带外部脉搏（WEP）进行自动分析。这种“K”或“WEP”信号的三个不同成分可以定义为：K1、K2和K3 [1]。每个成分具有不同的形状和“出现/消失特性”。K1是一种低频不可听信号，在袖带压力高于收缩压时出现。K2信号出现在收缩压（SP）时，并在舒张压（Dp）时消失（K2算法），可用于测量血压。利用这一特性，“K2算法”已被证明比听诊技术更准确[1]。为了使用K2算法实现自动测量，信号处理技术被应用于K信号。
