Estimation of beat timing and cardiac function during circulatory support using rotary blood pump parameters

DOI

Bibliographic Information

Other Title
  • 補助人工心臓駆動時のポンプパラメータを利用した拍動及び心機能の推定

Abstract

<p>So far, we have proposed the control algorithm to synchronize output of ventricular assist device to native heart cycle without external sensors such as ECG. In the method, heartbeat component in pump rotational speed was regarded as disturbance to controlled rotational speed. Thus the heartbeat signal was calculated as estimation error of rotational speed. Moreover this signal seems to have also information of native heart function. Therefore, the aim of this study is to attempt to estimate cardiac function from the estimated heartbeat signal.The instantaneous pump speed was estimated by an ARX model which inputs were reference speed and current consumption. The parameters of the model were calculated by using recursive identification algorithm.In results, some features of the estimated heartbeat signal have a close relationship with circulatory parameters. Therefore, it was indicated that the proposed method may be able to estimate not only cardiac cycle but function.</p>

Journal

Details 詳細情報について

  • CRID
    1390282680243790976
  • NII Article ID
    130005285354
  • DOI
    10.11239/jsmbe.54annual.s185
  • ISSN
    18814379
    1347443X
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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