A photoplethysmography smartphone-based method for heart rate variability assessment: device model and breathing influences
A photoplethysmography smartphone-based method for heart rate variability assessment: device model and breathing influences
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DOI：
10.1016/j.bspc.2019.101717
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发表时间：
2020-03-01
影响因子：
5.1
通讯作者：
Fernandez-Chimeno, Mireya
中科院分区：
文献类型：
--
作者：
Guede-Fernandez, Federico;Ferrer-Mileo, Victor;Fernandez-Chimeno, Mireya
提出并验证了一种基于智能手机的心率和心率变异性（HRV）测量方法。该方法基于用智能手机摄像头（SPPG）采集的光电体积描记术（PPG）。将SPPG与用作金标准的心电图（ECG）以及外部PPG传感器进行比较。23名健康受试者在三种不同的呼吸条件下使用两种不同的智能手机型号进行测量。SPPG和ECG序列之间的第一微分的误差最小化，基准点在SPPG的最大一阶导数处。所获得的SPPG和ECG之间的误差的标准偏差（SNR）为约5.4ms，并且其类似于PPG和ECG之间的SNR。SPPG和ECG对NN、SDNN和RMSSD的一致性良好，但对LF/HF的一致性不足。对于HRV指标，SPPG-ECG和PPG-ECG的一致性水平相似。最后，智能手机型号之间的HRV指数差异很小。因此，智能手机可以用于准确测量以下HRV指标：NN，SDNN和RMSSD。(C)2019爱思唯尔有限公司版权所有。
A measurement method of heart rate and heart rate variability (HRV) based on smartphone has been developed and validated. The method is based on photoplethysmography (PPG) acquired with the smartphone camera (SPPG). SPPG was compared with the electrocardiogram (ECG), used as the gold standard, and with an external PPG sensor. Twenty-three healthy subjects were measured using two different smartphone models in three different breathing conditions. The error of the first differentiation between SPPG and ECG series is minimized with the fiducial point at maximum first derivative of the SPPG. The obtained standard deviation of error (SDE) between SPPG and ECG is around 5.4 ms and it is similar to SDE between PPG and ECG. Good agreement between SPPG and ECG for NN, SDNN and RMSSD have been found but it is insufficient agreement for LF/HF. Similar levels of agreement for SPPG-ECG and PPG-ECG have been obtained for the HRV indices. Finally, the differences between smartphone models for HRV indices are slight. Therefore, the smartphone can be used for measuring accurately the following HRV indices: NN, SDNN and RMSSD. (C) 2019 Elsevier Ltd. All rights reserved.