Unconstrained Vital Sign Monitoring System Using an Aortic Pulse Wave Sensor
Unconstrained Vital Sign Monitoring System Using an Aortic Pulse Wave Sensor
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DOI：
10.1038/s41598-019-53808-9
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发表时间：
2019-11-25
影响因子：
4.6
通讯作者：
Tsuji, Toshio
中科院分区：
文献类型：
--
作者：
Hagiyama, Naoki;Hirano, Harutoyo;Tsuji, Toshio
本文提出了一种新的无约束监测系统，该系统可以测量心脏和呼吸频率，并根据心率变异性评估自主神经活动。该系统通过APW传感器测量患者的主动脉脉冲波（APW），该传感器由集成在床垫中的单个麦克风组成。使用测量的apw分析生命体征（即心率、呼吸频率）和自主神经活动。在仰卧位和坐位受试者的实验中，将该系统计算的生命体征与商用仪器测量的生命体征进行比较，得到心率r > 0.8、呼吸频率r > 0.7和心率变异性指标r > 0.8的相关性。这些结果表明，该系统可以产生准确的生命体征测量。此外，我们还进行了图像刺激呈现实验，探讨了刺激诱发的自我报告心理状态与测量的生命体征之间的关系。结果表明，生命体征反映心理状态。总之，所提出的系统证明了它能够通过坐在或躺在APW传感器上的简单动作来监测健康状况。
This paper proposes a novel unconstrained monitoring system that measures heart and respiratory rates and evaluates autonomic nervous activity based on heart rate variability. The proposed system measures the aortic pulse waves (APWs) of a patient via an APW sensor that comprises a single microphone integrated into a mattress. Vital signs (i.e., heart rate, respiratory rate) and autonomic nervous activity were analyzed using the measured APWs. In an experiment with supine and seated participants, vital signs calculated by the proposed system were compared with vital signs measured with commercial devices, and we obtained the correlations of r > 0.8 for the heart rates, r > 0.7 for the respiratory rates, and r > 0.8 for the heart rate variability indices. These results indicate that the proposed system can produce accurate vital sign measurements. In addition, we performed the experiment of image stimulus presentation and explored the relationships between the self-reported psychological states evoked by the stimulus and the measured vital signs. The results indicated that vital signs reflect psychological states. In conclusion, the proposed system demonstrated its ability to monitor health conditions by actions as simple as sitting or lying on the APW sensor.