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Vol. 230, Issue 2, February 2019, pp. 7-13




Diagnosis of Obstructive Sleep Apnea Using ECG Sensor Computer-Aided Diagnosis with Portable ECG Recorder and Acceleration Sensors for Detecting Obstructive Sleep Apnea

Jong-Ha Lee

Keimyung University, School of Medicine, Department of Biomedical Engineering, South Korea


Received: 30 December 2018 /Accepted: 31 January 2019 /Published: 28 February 2019

Digital Sensors and Sensor Sysstems


Abstract: Obstructive sleep apnea (OSA) is defined as a sleep disorder caused by periodic obstruction or stricture of the upper airway. It was recently discovered that OSA is associated with cardiovascular diseases. Since polysomnography, which was previously used to evaluate OSA, requires high-cost and has time/spatial restrictions, HRV analysis and acceleration sensors are being investigated as new parameters of OSA. In this study, ECG electrodes were attached to the acceleration sensors to simultaneously measure 2 different types of biomarkers: acceleration of thoracic motion and ECG. HRV was measured using the ECG and it was analyzed to obtain LF/HF ratios, indicators of autonomic nervous systems, at different times. Also, ECG Fourier coefficient was used. A filter was used to remove the noise from the acceleration data and 6 characteristic points of OSA were detected. The 6 characteristic points of OSA were analyzed using the Weka program. Adaboost, one of the boosting algorithms, was used. 10-folds cross validation method was used to evaluate the model, which showed a sensitivity of 90 %, specificity of 80 %, accuracy of 85 % in diagnosing OSA.


Keywords: Computer-aided Diagnosis, Sleep Apnea, Adaboost, Machine learning.


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