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Healthc Inform Res > Volume 14(3); 2008 > Article
Journal of Korean Society of Medical Informatics 2008;14(3):295-302.
DOI: https://doi.org/10.4258/jksmi.2008.14.3.295    Published online September 30, 2008.
Development of a Wearable Pulse Transit Time Monitoring Device
Dong Keun Jung, Jeong Seo Ha, Ku Tae Kang, Kwang Nyon Kim, Ki Ryon Kim, Soo Yung Ye, Jung Hoon Ro, Gye Rok Jeon
1Department of Biomedical Engineering, College of Medicine, Dong-a University, Korea.
2PhysioLab Co. Ltd, Korea.
3BK21 Medical Science Education Center, School of Medicine, Pusan National University, Korea.
4Department of Biomedical engineering, College of Medicine, Pusan National University, Korea.
Abstract

OBJECTIVES: We have developed a non.intrusive continuous PTT monitoring system, using a wearable device and wireless communication technology.

METHODS: Pulse transit time (PTT) is a non.invasive measurement that shows promise in the continuous monitoring of blood pressure (BP) and the assessment of arterial stiffness. It has potential applications in wearable health monitoring devices. Generally, PTT is measured from the electrocardiogram (ECG) Rwave to a characteristic point on the peripheral pulse by photoplethysmography. However, for home healthcare applications, a system needs to be wearable and wireless. ECG and PPG were sampled at 1200 Hz and transmitted to a personal computer (PC) using Bluetooth communications. Heart rate (HR) and PTT were calculated by the PC from the signals received and waveforms of ECG, PPG, PTT and HR were displayed.

RESULTS: In this study, we implemented a system that could be adapted to the wrist and measured ECG and a Photoplethysmogram (PPG).

CONCLUSIONS: The wearable continuous PTT monitoring system developed in this study could be useful in home cardiovascular healthcare.

Key Words: PTT(pulse transit time), ECG(electrocardiogram), BP, Wearable, PPG(photoplethysmogram)


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