Department of Electrical and Computer Engineering, Inter-University Semiconductor Research Center, Institute of Engineering Research, Seoul National University, Seoul 08826, Korea.
Interdisciplinary Program in Bioengineering, Seoul National University, Seoul 03080, Korea.
Sensors (Basel). 2019 Apr 11;19(7):1744. doi: 10.3390/s19071744.
Blood pressure (BP) is a physiological parameter reflecting hemodynamic factors and is crucial in evaluating cardiovascular disease and its prognosis. In the present study, the reliability of a non-invasive and continuous BP measurement using a three-axis tactile force sensor was verified. All the data were collected every 2 min for the short-term experiment, and every 10 min for the long-term experiment. In addition, the effects on the BP measurement of external physical factors such as the tension to the radial artery on applying the device and wrist circumference were evaluated. A high correlation between the measured BP with the proposed system and with the cuff-based non-invasive blood pressure, and reproducibility, were demonstrated. All data satisfied the Association for the Advancement of Medical Instrumentation criteria. The external physical factors did not affect the measurement results. In addition to previous research indicating the high reliability of the arterial pulse waveforms, the present results have demonstrated the reliability of numerical BP values, and this implies that the three-axis force sensor can be used as a patient monitoring device.
血压（BP）是反映血流动力学因素的生理参数，对评估心血管疾病及其预后至关重要。在本研究中，验证了使用三轴触觉力传感器进行非侵入性和连续 BP 测量的可靠性。所有数据在短期实验中每 2 分钟采集一次，在长期实验中每 10 分钟采集一次。此外，还评估了外部物理因素，如施加设备时对桡动脉的张力和手腕周长，对 BP 测量的影响。结果表明，与基于袖带的无创血压测量相比，所提出的系统测量的 BP 具有高度相关性和可重复性，所有数据均满足医疗仪器协会的标准。外部物理因素不会影响测量结果。除了之前的研究表明动脉脉搏波具有很高的可靠性外，本研究结果还表明了数值 BP 值的可靠性，这意味着三轴力传感器可作为患者监测设备使用。
