標題: Reduction of interference in oscillometric arterial blood pressure measurement using fuzzy logic
作者: Lin, CT
Liu, SH
Wang, JJ
Wen, ZC
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: blood pressure;fuzzy logic;oscillation;oscillometry;regression
公開日期: 1-四月-2003
摘要: In oscillometry, oscillation amplitudes (OAs) embedded in the cuff pressure are drastically affected by a variety of artifacts and cardiovascular diseases, leading to inaccurate arterial blood pressure (ABP) measurement. The purpose of this paper is to improve the accuracy in the arterial pressure measurement by reducing interference in the OAs using a recursive weighted regression algorithm (RWRA). This method includes a fuzzy logic discriminator (FLD) and a recursive regression algorithm. The FLD is used to reduce the effect of artifacts caused by measurement motion disturbance or cardiovascular diseases, and to determine the truthfulness of the oscillation pulse. According to the truth degree, the relationship between the cuff pressure and OA is reconstructed using the regression algorithm. Because the regression method must utilize inverse matrix operation, which will be difficult to implement in an automatic or ambulatory monitor, the recursive regression method is proposed to solve this problem. To test the performance of this RWRA, 47 subjects underwent the ABP measurement using both the auscultation and the oscillometry combined with the RWRA. It was found that the average difference between the pooled blood pressures measured by the auscultation and those by the oscillometry combined with the RWRA was found to be only 4.9 mmHg. Clinical results demonstrated that the proposed RWRA is more robust than the traditional curve fitting algorithm (TCFA). We conclude that the proposed RWRA can be applied to effectively improve the accuracy of the oscillometric blood pressure measurement.
URI: http://dx.doi.org/10.1109/TBME.2003.809502
http://hdl.handle.net/11536/27981
ISSN: 0018-9294
DOI: 10.1109/TBME.2003.809502
期刊: IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
Volume: 50
Issue: 4
起始頁: 432
結束頁: 441
顯示於類別:期刊論文


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