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The Meaning of the Turning Point of the Index of Motor Current Amplitude Curve in Controlling a Continuous Flow Pump or Evaluation of Left Ventricular Function
Author(s) -
Endo G.J.,
Kojima K.,
Nakamura K.,
Matsuzaki Y.,
Onitsuka T.
Publication year - 2003
Publication title -
artificial organs
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.684
H-Index - 76
eISSN - 1525-1594
pISSN - 0160-564X
DOI - 10.1046/j.1525-1594.2003.69961.x
Subject(s) - flow (mathematics) , amplitude , operating point , current (fluid) , in vivo , point (geometry) , cardiac function curve , ventricular function , turning point , cardiology , cardiac output , continuous flow , mechanics , control theory (sociology) , biomedical engineering , mathematics , hemodynamics , medicine , physics , computer science , engineering , acoustics , geometry , electrical engineering , biology , heart failure , optics , artificial intelligence , microbiology and biotechnology , control (management) , thermodynamics , period (music)
It is the goal of this section to publish material that provides information regarding specific issues, aspects of artificial organ application, approach, philosophy, suggestions, and/or thoughts for the futureAbstract: In this series, we investigated the meaning of the t‐point of index of motor current amplitude (ICA) curve from a point of view of flow rate on in vitro and in vivo studies. On mock circulation loop and left ventricular assist device (LVAD)–equipped pigs, we detected the t‐point and compared the pump flow at the t‐point with the simultaneous cardiac output. The pump flow at the t‐point showed high correlation against the simultaneous cardiac output for in vitro or in vivo study. By detection of the t‐point of the ICA curve and measuring or estimating the pump flow at t‐point, the cardiac output may be assessed without any sensor in various cardiac conditions.