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碩士 === 國立中央大學 === 電機工程學系 === 105 === Heart-rate variability (HRV) is a popular issue which has been widely discussed in academic heart studies. In the HRV, the changes of heart-rate information is continuously analyzed. Current HRV measurements analyze R-R intervals of electrocardiogram (ECG) and ca...
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ndltd-TW-105NCU054421112019-05-16T00:08:09Z http://ndltd.ncl.edu.tw/handle/p7uars none 光體積血容積之心率變異度量測及分析應用 Chun Chen 陳準 碩士 國立中央大學 電機工程學系 105 Heart-rate variability (HRV) is a popular issue which has been widely discussed in academic heart studies. In the HRV, the changes of heart-rate information is continuously analyzed. Current HRV measurements analyze R-R intervals of electrocardiogram (ECG) and calculate the spectral density of very low-frequency, low-frequency, and high-frequency bands for estimating the sympathetic/parasympathetic activities. Indicators, such as RMSSD, SDNN, and SDANN, are proposed as indexes for risk factor estimations. Though ECG-based HRV has been widely studied, however, the ECG measurement requires the electrodes to be contacted on both hands which causes inconveniency and is not suitable to be designed for continuous measurement using wearable devices. Accordingly, in our study, we intend to test the feasibility of using photoplethysmogram (PPG) to replace ECG in HRV measurement. Both ECG and PPG signals were measured simultaneously and compared. The ratio between HRV low-frequency and high-frequency components (LF/HF) in each subject was calculated and compared with the value of ECG LF/HF. We found there was a high linear correlation between PPG and ECG -based HRV which demonstes its feasibitliy of replacing ECG by PPG. In addition, in our stud, the feasibility of time-domain parameter SDNN/RMSSD was also calculated for HRV study. Po-Lei Lee 李柏磊 2017 學位論文 ; thesis 73 zh-TW |
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碩士 === 國立中央大學 === 電機工程學系 === 105 === Heart-rate variability (HRV) is a popular issue which has been widely discussed in academic heart studies. In the HRV, the changes of heart-rate information is continuously analyzed. Current HRV measurements analyze R-R intervals of electrocardiogram (ECG) and calculate the spectral density of very low-frequency, low-frequency, and high-frequency bands for estimating the sympathetic/parasympathetic activities. Indicators, such as RMSSD, SDNN, and SDANN, are proposed as indexes for risk factor estimations. Though ECG-based HRV has been widely studied, however, the ECG measurement requires the electrodes to be contacted on both hands which causes inconveniency and is not suitable to be designed for continuous measurement using wearable devices. Accordingly, in our study, we intend to test the feasibility of using photoplethysmogram (PPG) to replace ECG in HRV measurement. Both ECG and PPG signals were measured simultaneously and compared. The ratio between HRV low-frequency and high-frequency components (LF/HF) in each subject was calculated and compared with the value of ECG LF/HF. We found there was a high linear correlation between PPG and ECG -based HRV which demonstes its feasibitliy of replacing ECG by PPG. In addition, in our stud, the feasibility of time-domain parameter SDNN/RMSSD was also calculated for HRV study.
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Po-Lei Lee |
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Po-Lei Lee Chun Chen 陳準 |
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Chun Chen 陳準 |
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Chun Chen 陳準 none |
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Chun Chen |
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http://ndltd.ncl.edu.tw/handle/p7uars |
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AT chunchen none AT chénzhǔn none AT chunchen guāngtǐjīxuèróngjīzhīxīnlǜbiànyìdùliàngcèjífēnxīyīngyòng AT chénzhǔn guāngtǐjīxuèróngjīzhīxīnlǜbiànyìdùliàngcèjífēnxīyīngyòng |
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