Non-invasive estimation and control of inlet pressure in an implantable rotary blood pump for heart failure patients

Abdul-Hakeem H AlOmari, Andrey V Savkin, P J Ayre, E Lim, David G Mason, Robert Francis Salamonsen, John Fraser, Nigel H Lovell

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12 Citations (Scopus)

Abstract

We propose a dynamical model for mean inlet pressure estimation in an implantable rotary blood pump during the diastolic period. Non-invasive measurements of pump impeller rotational speed (I?), motor power (P), and pulse width modulation signal acquired from the pump controller were used as inputs to the model. The model was validated over a wide range of speed ramp studies, including (i) healthy (C1), variations in (ii) heart contractility (C2); (iii) afterload (C2, C3, C4), and (iv) preload (C5, C6, C7).
Original languageEnglish
Pages (from-to)1035 - 1060
Number of pages26
JournalPhysiological Measurement
Volume32
Issue number8
DOIs
Publication statusPublished - 2011

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