손목형 혈압계 방식의 Beat-by-Beat 혈압 측정에 관한 실험적 연구

다국어 초록 (Multilingual Abstract)

In hospitals, continuous blood pressure is measured by inserting of a catheter into a blood vessel, which is an accurate technique, but leads to damaged blood vessels. To address this drawback, the Volume-Clamping method was introduced as an alternative approach for non-invasive and continuous blood pressure measurement. However, this approach employs complex PID control algorithms for finger cuff, leading to high costs and bulky apparatus. Therefore, we propose a beat-by-beat blood pressure monitoring system in the form of a wrist sphygmomanometer, wherein the pressure-volume relationship of the radial artery is determined through oscillometric measurements. Beat-by-beat blood pressures are estimated based on the artery pressure-volume relationship and artery volume variations obtained from the wrist cuff. Research findings indicate that the errors in systolic and diastolic blood pressure are -3.4 ± 7.6[mmHg], -3.7 ± 5.3[mmHg] respectively, meeting the standards set by the Association for the Advancement of Medical Instrumentation(AAMI). This system has the potential to be reproduced using a simple mechanism involving a solenoid valve, transforming it into a wrist blood pressure sphygmomanometer that offers convenient blood pressure monitoring not only within medical facilities but also in daily life.