以智慧型手機為核心之新型無氣囊血壓量測

Novel cuff-less blood pressure measurement base on android smartphone

胡義騰(I-Teng Hu)

指導教授 ： 徐良育

中原大學/工學院/生物醫學工程研究所/碩士(2013年)

https://doi.org/10.6840/cycu201301043

摘要

台灣地區近年由於高度工業化，慢性病成了威脅國人身體健康的疾病。其中包含高血壓、糖尿病、心臟病及肝炎等疾病，又以高血壓最為世人所隱憂，通常剛發病時沒有明顯症狀，一旦發生併發症，如：腦中風、心血管病變、腎功能衰竭等，生命健康已經遭到嚴重的威脅。因此，隨時監測血壓值是必要的。
目前血壓量測在臨床應用上分成侵入與非侵入式兩種方式，侵入式血壓量測可精準紀錄連續血壓訊號卻不適合用在一般例行性檢查中進行。雖然非侵入式血壓計可應用於一般檢查或居家檢查，但目前市面上常見的非侵入式血壓計主要缺點是體積過大且須搭配充氣幫浦充氣進行量測，其容易造成患者不適。因此，本研究沿用本實驗室研創之無氣囊血壓量測原理，利用此裝置擷取血壓訊號透過藍芽模組以無線的方式傳送至Android智慧型手機進行血壓值運算並將結果儲存在手機裡，達到小體積及可攜式之目的。
本研究針對20位正常自願的受測者，利用本研究所開發無氣囊血壓量測系統與 Microlife AFIB血壓計在相同手臂上進行量測比較。發現由本系統所計算出的收縮壓和舒張壓值與AFIB比較有偏低的趨勢，其相關度分別為0.4和0.33。另一方面，本系統血壓訊號擷取裝置與使用者的技術有很大的關係，經過施力與尋找量測點的指導與訓練，可以有效的提升量測血壓的準確性。例如，在非常熟練的使用者操作下，此系統的平均血壓及舒張壓可以達到高精確度和高相關度，其相關係數分別為0.996和0.996。因此，在使用上若能夠訂定使用的規範，則準確度能明顯提升。
本研究完成在智慧型手機進行血壓量測，利用手機為運算核心加上訊號擷取裝置進行量測，避免攜帶血壓計的困擾，提高可攜性及便利性，達到量測意願提高的目的。

關鍵字

智慧型手機 ； 無氣囊 ； 血壓

並列摘要

Due to highly industrialized, in recent years, chronic diseases, such as hypertension, diabetes, heart disease and hepatitis, threaten the health of people in Taiwan. Amount them, people worries most about hypertension. The initial stage of hypertension has no obvious symptoms. However, when complications such as stroke, cardiovascular disease and renal failure occur, the life has been under serious threat. Therefore, monitoring the blood pressure is essential.
There are two ways to measure blood pressure in clinical applications which are invasive and non-invasive methods. The benefit of invasive blood pressure measurement is that it can record the continuous pressure signal accurately. However, it can’t be used in routine examination. Although the non-invasive blood pressure measurement can be used in routine and home examinations, but the device dimension is too large and must includes a inflating pump, make it uncomfortable. Therefore, this study adapts the cuff-less blood pressure device developed in our laboratory to acquire blood pressure signal. The device then transmits digital signal to android smart phone via a wireless Bluetooth module. The smart phone calculates and storages blood pressure values and HR. The final result is a small and portable system.
For evaluation, this study recruits twenty health volunteers to verify the system and to compare with the Microlife AFIB monitor. The results indicate that systolic pressures and diastolic pressures obtained from the new system are lower than those obtained by the Microlife AFIB monitor. The Pearson’s coefficients between them are 0.40 and 0.33 for systolic and diastolic pressures, respectively. Additionally, it is found that the accuracy of the system depend on user’s skill. Subject can measure blood pressure effectively and accurately after training for pressure exertion and identifying the measurement sweet point. For example, under the hand of a skillfully user the proposed system achieves high accuracy and correlation coefficients, 0.996 and 0.996 for MAP and DBP respectively. Therefore, we can improve accuracy significantly with defining the user guideline more precisely.
In conclusion, this study accomplishes blood pressure measurement on a smart phone. The system combines a signal acquisition device and a smart phone as a computing core to achieve the measurement without carrying a typical blood pressure monitor. The completed system is portable and convenient, thus it can increase the willingness and frequency of blood pressure measurement.

並列關鍵字

Blood Pressure ； Cuff-less ； Android Smart Phone

參考文獻

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