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Sensors (Basel). 2012;12(9):12844-69. doi: 10.3390/s120912844. Epub 2012 Sep 21.

A real-time cardiac arrhythmia classification system with wearable sensor networks.

Author information

1
Department of Mechanical, Aerospace and Biomedical Engineering, The University of Tennessee, Knoxville, TN 37996, USA. shengh@mtu.edu

Abstract

Long term continuous monitoring of electrocardiogram (ECG) in a free living environment provides valuable information for prevention on the heart attack and other high risk diseases. This paper presents the design of a real-time wearable ECG monitoring system with associated cardiac arrhythmia classification algorithms. One of the striking advantages is that ECG analog front-end and on-node digital processing are designed to remove most of the noise and bias. In addition, the wearable sensor node is able to monitor the patient's ECG and motion signal in an unobstructive way. To realize the real-time medical analysis, the ECG is digitalized and transmitted to a smart phone via Bluetooth. On the smart phone, the ECG waveform is visualized and a novel layered hidden Markov model is seamlessly integrated to classify multiple cardiac arrhythmias in real time. Experimental results demonstrate that the clean and reliable ECG waveform can be captured in multiple stressed conditions and the real-time classification on cardiac arrhythmia is competent to other workbenches.

KEYWORDS:

cardiac arrhythmia classification; hidden Markov model; wearable ECG

PMID:
23112746
PMCID:
PMC3478873
DOI:
10.3390/s120912844
[Indexed for MEDLINE]
Free PMC Article

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