Adaptive Beat-to-Beat Heart Rate Estimation in Ballistocardiograms

被引:139
|
作者
Brueser, Christoph [1 ]
Stadlthanner, Kurt [2 ]
de Waele, Stijn [3 ]
Leonhardt, Steffen [1 ]
机构
[1] Rhein Westfal TH Aachen, Helmholtz Inst Biomed Engn, Philips Chair Med Informat Technol, D-52074 Aachen, Germany
[2] Philips Res Europe, D-52074 Aachen, Germany
[3] Philips Res Labs, NL-5600 JA Eindhoven, Netherlands
关键词
Ballistocardiography (BCG); beat-to-beat heart rate estimation; clustering; BODY MOVEMENTS; RESPIRATION; SENSOR; BED;
D O I
10.1109/TITB.2011.2128337
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A ballistocardiograph records the mechanical activity of the heart. We present a novel algorithm for the detection of individual heart beats and beat-to-beat interval lengths in ballistocardiograms (BCGs) from healthy subjects. An automatic training step based on unsupervised learning techniques is used to extract the shape of a single heart beat from the BCG. Using the learned parameters, the occurrence of individual heart beats in the signal is detected. A final refinement step improves the accuracy of the estimated beat-to-beat interval lengths. Compared to many existing algorithms, the new approach offers heart rate estimates on a beat-to-beat basis. The agreement of the proposed algorithm with an ECG reference has been evaluated. A relative beat-to-beat interval error of 1.79% with a coverage of 95.94% was achieved on recordings from 16 subjects.
引用
收藏
页码:778 / 786
页数:9
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