Proceedings of the KOSOMBE Conference (대한의용생체공학회:학술대회논문집)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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A Study on Assessments of Baroreflex Sensitivity through the Closed-loop Feedback Model of Cardiovascular System

심혈관계의 폐루프 귀환 모델을 통한 압수용체반사감도의 평가에 관한 연구

  • Choi, S.J. (Department of Electrical Engineering, College of Engineering, Yonsei University) ;
  • Shin, K.S. (Institute of Medical Instruments Technology, College of Engineering, Yonsei University) ;
  • Lee, M.H. (Department of Electrical Engineering, College of Engineering, Yonsei University)
  • 최석준 (연세대학교 공과대학 전기공학과) ;
  • 신건수 (연세대학교 의료기기기술연구소) ;
  • 이명호 (연세대학교 공과대학 전기공학과)
  • Published : 1997.11.28
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Abstract

In this paper, the method is proposed, which enables us to assess baroreflex sensitivity noninvasively through the closed-loop feedback model between RR fluctuation and arterial blood pressure fluctuation, which are obtained in blood low signals. The proposed indexes of baroreflex sensitivity, $BRS_{LF}$ and $BRS_{HF}$, are calculated by the modulus(or gain) of the transfer unction between two fluctuations above in LF band and HF band, where the coherence is more than 0.5. To evaluate the performance of the proposed method, it is applied to blood low signals obtained from subjects at tilt angles of $0^{\circ},\;45^{\circ},\;90^{\circ}$ and $0^{\circ}$ successively. In result, it is concluded that the proposed method enables us to assess baroreflex sensitivity noninvasively.

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