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KMID : 0895720060100020057
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Journal of the Korean Society of Jungshin Science
2006 Volume.10 No. 2 p.57 ~ p.66
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Analysis of tachograms alternative to pulse diagnosis
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Im Jong-Ho
Jin Young-An
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Abstract
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The pulse diagnosis have been very important diagnostic method during several thousand years in the orient. Objective: The purpose of this study is to characterized the Pulse transit time(PTT) and PTTv(v=variability) for time series analysis. Time series analysis(tachogram) represents the current state of individual system(time resolvability). Method: Pulse transit time(PTT) was measured on the time delay difference between ECG R peak and foot of systolic rise of two photoplethysmography(PPG) signal. Results: PTTv study was performed in 40 people(young) and 50 people(old). Ten tachogram(=PTTv) is also established from these two PPGs and ECG. Spearman correlations values(10×10/2) are calculated from this ten tachograms. Pattern of these correlation-bar may be represent the cardiovascular fingerprint(CVF) for an individual. Discussion: Normal cardiovascular fingerprint(nCVF) and disease specific, dCVF can will be established from massive case study. Individual CVF takes from 5 min data, and compare with nCVF and dCVF. Therefore PTTv-CVF may be novel method for individual constitution analysis.
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KEYWORD
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photoplethysmography(PPG), PTT(pulse transit time), PTTv(PTT variability), PWV(pulse wave velocity), cardiovascular fingerprint(CVF), HRV, CVR
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