4.7 Article

Applying a Deep Learning Network in Continuous Physiological Parameter Estimation Based on Photoplethysmography Sensor Signals

期刊

IEEE SENSORS JOURNAL
卷 22, 期 1, 页码 385-392

出版社

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2021.3126744

关键词

Feature extraction; Estimation; Heart rate; Databases; Sensors; Training; Monitoring; Photoplethysmography; convolutional neural network; long short-term memory; blood pressure; heart rate; multiparameter intelligent monitoring in intensive care; deep learning

资金

  1. Ministry of Science and Technology [MOST 108-2221E-150-022-MY3]
  2. National Taiwan Ocean University

向作者/读者索取更多资源

In this paper, a continuous physiological parameter estimation model based on a deep learning network for photoplethysmography (PPG) sensor signals was proposed. The model was able to accurately and continuously monitor the blood pressure (BP) and heart rate (HR) of individuals.
In this paper, we propose a continuous physiological parameter estimation model based on a deep learning network for photoplethysmography (PPG) sensor signals. Signals of 8-s duration were incorporated into the proposed model in this study for frequent estimation of the systolic blood pressure (BP), diastolic BP, heart rate (HR), and mean arterial pressure of the human body; this facilitated early identification and monitoring of physiological conditions and thus reduced the risk of cardiovascular disease. The proposed model was designed using a convolutional neural network (CNN) and long short-term memory (LSTM) network. This model was trained and validated using the large-scale Multiparameter Intelligent Monitoring in Intensive Care database. The CNN was used to extract features from PPG signals automatically. This automatic extraction replaced the conventional manual feature extraction process. Features with time-series were then analyzed using the LSTM network to estimate physiological parameters. Subsequently, ten-fold cross-validation was conducted to reveal the mean absolute errors +/- standard deviations of participants' systolic BP, diastolic BP, HR, and mean arterial pressure to be 2.54 +/- 3.88, 1.59 +/- 2.45, 1.62 +/- 2.55, and 1.59 +/- 2.34 mmHg, respectively. These values meet the standards established by the Association for the Advancement of Medical Instrumentation and the British Hypertension Society. The proposed method facilitates the accurate, continuous monitoring of the BP and HR.

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