- 學位論文
手指末梢施壓對血壓波形與血管容積相關性之影響
The correlation between blood pressure and photoplethysmograph waveforms when applying different skin contacting force.
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摘要
中醫的歷史依文獻記載已達數千年，而切為中醫看診中的四步驟之一，切的原理在於藉由把脈動作利用血壓波形的差異來對人體做健康上的診斷，近代藉由許多研究也證實血壓波形可以反映出人體年齡的增長與血管的硬化情形，而微循環漸漸成為人體診療的指標，本研究在於嘗試尋找血壓波形與微循環血管容積間是否有對等的轉換關係或條件。 在研究中針對手指末梢施予90mm-Hg、160mm-Hg、230mm-Hg、300mm-Hg與370mm-Hg五種施壓強度，分別針對血壓波形與血管容積在各種施壓條件下其諧波比例的變異程度，並延伸尋找出血壓波形與血管容積兩訊號間可靠的轉換關係。從實驗結果中可得到，當對手指末梢循環施壓90mm-Hg時，血管容積訊號的變異係數較其他施壓強度還小，同時血壓波形與血管容積訊號轉換間的相關係數也較高。有了以上的轉換關係，未來可以將血壓波形與血管容積兩種研究領域做結合，也可延伸至遠端醫療使用同時為人體檢測提供更為方便且快速的檢測方式。
並列摘要
Traditional Chinese medicine（TCM）can trace its history back to thousands of years ago. The "Touching" is an important step in TCM, and its principle is touching the "Pulse Felt" to evaluate the state of health for diagnostics. In recent years, many researches had proved that the "Pulse Felt" reflects the vascular sclerosis; therefore, microcirculation had become to a diagnostic index in human system. In this study, we attempted to find out whether there was any relative transfer functions and conditions between the blood pressure（BP）and photoplethysmograph（PPG）signals. In the present study, five degrees of contacting force was administered on the fingers（90mm-Hg、160mm-Hg、230mm-Hg、300mm-Hg、370mm-Hg）, and the ratio CV was counted respectively in each coefficients wave. After analyzing, the relationship between BP and PPG signal was obtained. The results are as follows：（1）The minimum CV of the PPG signal was displayed while contacting force on the fingers was 90mm-Hg.（2）It was also more reliable between BP and PPG transfer functions. Combination the fields of BPW and PPG has potential to provide telemedicine with more prompt diagnostic parameters.
參考文獻
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