Theodor Michael, Ruh Dominic, Förster Katharina, Heilmann Claudia, Beyersdorf Friedhelm, Zappe Hans, Seifert Andreas
Annu Int Conf IEEE Eng Med Biol Soc. 2013;2013:4038-41. doi: 10.1109/EMBC.2013.6610431.
This paper presents an implantable accelerometer which detects plethysmograms directly at an artery. The sensor provides a new method for continuous blood pressure monitoring. In vivo measurements indicate that the accelerometer is well suited for determining the Pulse Transit Time (PTT) and the Reflected Wave Transit Time (RWTT). Both parameters show a high correlation with the systolic blood pressure. By varying the blood pressure, it was seen that RWTT more closely agrees with theory than PTT. Through several blood pressure sweeps the RWTT, as detected by the accelerometer, coincided very well with the systolic blood pressure, with a correlation coefficient of 0.96 and mean deviation of 4.3% for 1800 pulses.
本文介绍了一种可植入式加速度计，它能直接在动脉处检测体积描记图。该传感器为连续血压监测提供了一种新方法。体内测量表明，该加速度计非常适合用于确定脉搏传输时间（PTT）和反射波传输时间（RWTT）。这两个参数都与收缩压高度相关。通过改变血压发现，RWTT比PTT更符合理论。经过几次血压扫描，加速度计检测到的RWTT与收缩压非常吻合，对于1800次脉搏，相关系数为0.96，平均偏差为4.3%。
