使用非侵入式光學血液容積波形技術估算連續動脈血壓

Abstract

血壓在臨床上是用來評估心臟血管狀態的重要參數之一，尤其在加護單位和開刀房中，更是需要即時而且連續地監控血壓波形。事實是，現今臨床上監測連續性血壓最主要還是利用侵入式的動脈導管來達成，這種直接的測量方法雖然可以提供正確而且即時的血壓變化和波形，但是侵入式方法總會帶來相對的風險，例如感染、血管栓塞等，而且有使用設定上的複雜度。光容積波形技術是一種非侵入方式測量方式，用來測量周邊組織血管的容積變化，同是與心臟循環系統有關。因此本研究旨在嘗試利用光容積波形技術之可行性，設計一個能夠簡單使用，以及穩定可靠的非侵入式連續血壓量測系統。

Continuous Blood pressure is one of the most important vital signs to evaluate cardiac-vascular system conditions especially monitoring in intensive care units and operation zones. However, the usage of arterial-line is the most common method of continuous blood pressure measurement. It is measuring real-time blood pressure variations and waveforms directly and reliably, but it neither sets up complex nor is an invasive procedure to induce the risks, like infection or embolism. Photoplethysmography is a non-invasive technology to measure the change of tissue vessel volume concerned with cardiac-vascular system. The aim of research is to find the possibility of developing an easy use, stable, noninvasive, and long term measurement of blood pressure by photoplethysmography.