| Title |
An Experimental Study on Beat-by-Beat Blood Pressure Monitoring Based on Wrist Sphygmomanometer |
| Authors |
김동규(Dong-Gue Kim) ; 조재걸(Jaegeol Cho) |
| DOI |
https://doi.org/10.5370/KIEE.2024.73.9.1568 |
| Keywords |
Beat-by-Beat Blood Pressure Monitoring; Arterial Compliance; Artery Pressure-Volume Relationship; Wrist Sphygmomanometer |
| 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. |