Title :
A New Method for Determining the Servo Reference Value (Vo) of the Volume-Compensation Method
Author :
Tanaka, S. ; Nogawa, M. ; Sawanoi, Y. ; Yamakoshi, T. ; Yamakoshi, K.-i.
Author_Institution :
Kanazawa Univ., Kanazawa
Abstract :
A new technique for swiftly determine a servo reference value (Vo) of the volume-compensation method was developed. To determine the Vo values, high frequency vibration (frequency: 20 Hz, pulse pressure: 10 mmHg) was superimposed on cuff pressure (Pc), and artificially produced arterial wall oscillation was detected as photoplethys-mographic (PG) pulsation signal. In this signal, maximum oscillation points were observed when the mean value of Pc is equal to blood pressure, and Vo value was then determined from the mean level of PG signal at this maximum point. The values obtained by this method coincide well with those obtained by the previous method (the volume-oscillometric method), indicating the validity of the present method.
Keywords :
bio-optics; blood pressure measurement; blood vessels; medical signal processing; plethysmography; arterial wall oscillation; blood pressure; cuff pressure; frequency 20 Hz; photoplethysmographic pulsation signal; pressure 10 mm Hg; servo reference value; volume compensation method; Arterial blood pressure; Arteries; Blood pressure; Educational technology; Frequency; Heart beat; Medical services; Pressure measurement; Servomechanisms; Volume measurement; Adult; Algorithms; Blood Pressure; Blood Pressure Determination; Calibration; Data Compression; Equipment Design; Female; Humans; Male; Oscillometry; Pressure; Reference Values; Reproducibility of Results; Signal Processing, Computer-Assisted;
Conference_Titel :
Engineering in Medicine and Biology Society, 2007. EMBS 2007. 29th Annual International Conference of the IEEE
Conference_Location :
Lyon
Print_ISBN :
978-1-4244-0787-3
DOI :
10.1109/IEMBS.2007.4352799
