광전용적맥파 센서를 이용한 맥파전달시간의 측정
Measurement of Cardiac Pulse Transit Time using Photoplethysmography Sensor
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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 A/D 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.
참고문헌 (10)
- "C. Guyton. Textbook of Medical physiology" (1986), W.B. Saunders Company
- "Physiology and Biophysics of the Circulation" (1971), Year book Medical Publishers
- "“Regional wave travel and reflections along the human aorta a study with six simultaneous micromanometric pressures", 72, pp.12571269~ (1985)
- "Assesment of arterial distensibility by automatic pulse-wave velocity measurement validation and clinical studies", 26, pp.485~490 (1995)
- "Possible determinants of pulse-wave velocity in vivo", 35, pp.357~361 (1998)
- "“Repeatability of peripheral pulse measurements on ears", 9, pp.31930~ (1988)
- "Assesment of arterial distensibility by automatic pulse wave velocity measurement validation and clinical application studies", 26, pp.485~490 (1995)
- "The difference in pulse transit time to the toe and finger measured by photoplethysmography", 23, pp.85~93 (2002)
- "웨이브렛 계수를 이용한 부정맥 판정용 퍼지시스템 설계", 11(4) (2002)
- "휴대형 혈액가스분석 시스템의 구현 및 성능평가", 12(1) (2003)