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http://dx.doi.org/10.5369/JSST.2004.13.5.383

Measurement of Cardiac Pulse Transit Time using Photoplethysmography Sensor  

Choi, Byeong-Cheol (Dept. of Biomedical Engineering, Choonhae College)
Jung, Dong-Keun (Dept. of Biomedical Engineering, College of Medicine, Dong-A University)
Jeong, Do-Un (Dept. of Interdisciplinary Program in Biomedical Engineering, Pusan National University)
Ro, Jung-Hun (Dept. of Biomedical Engineering, College of Medicine, Pusan National University)
Jeon, Gye-Rok (Dept. of Biomedical Engineering, College of Medicine, Pusan National University)
Publication Information
Journal of Sensor Science and Technology / v.13, no.5, 2004 , pp. 383-391 More about this Journal
Abstract
In this study, we implemented the pulse transit time (PTT) system to examine usefulness of the monitoring method of distensibility and elasticity using photoplethysmography sensor in vivo. PTT is defined as the time interval between the peak of QRS complex in ECG signal and the maximum slope point of photoplethysmography. these two signals were converted to digital data by means of AID converter, then PTT was evaluated by heartbeat using PC. Results of analysis were displayed as a graph using spline interpolation method. The variance of PTT was measured repetitiously to verify efficiency of PTT system in resting state and hyperemic state. Repeated measurement of PTT was not same value but showed that coefficients of correlation were related with each other as 0.8302 (P<0.01) in resting state. And also repeated measurement of PTT showed significant correlation as 0.868 (P<0.01) in the hyperemic state. These result showed that PTT is reflect on transient pressure variance in the artery and is very useful method for the evaluation of prognosis of the hypertension and arteriosclerosis.
Keywords
pulse wave velocity; pulse transit time; photoplethysmography;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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