Modelling and control of a failing heart managed by a left ventricular assist device

• Autorzy: Son, Jeongeun , Du, Dongping , Du, Yuncheng
• Języki publikacji: EN

Abstrakty

EN

Left ventricular assist device (LVAD) recently has been used in advanced heart failure (HF), which supports a failing heart to meet blood circulation demand of the body. However, the pumping power of LVADs is typically set as a constant and cannot be freely adjusted to incorporate blood need from resting or mild exercise such as walking stairs. To promote the adoption of LVADs in clinical use as a long-term treatment option, a feedback controller is needed to regulate automatically the pumping power to support a time-varying blood demand, according to different physical activities. However, the tuning of pumping power induces suction, which will collapse the heart and cause sudden death. It is essential to consider suction when developing control strategy to adjust the pumping power. Further, hemodynamic of a failing heart exhibits variability, due to patient-to-patient heterogeneity and inherent stochastic nature of the heart. Such variability poses challenges for controller design. In this work, we develop a feedback controller to adjust the pumping power of an LVAD without inducing suction, while incorporating variability in hemodynamic. To efficiently quantify variability, the generalized polynomial chaos (gPC) theory is used to design a robust self-tuning controller. The efficiency of our control algorithm is illustrated with three case scenarios, each representing a specific change in physical activity of HF patients.

Słowa kluczowe

PL

regulator samonastrajalny; układ sercowo-naczyniowy; urządzenie wspomagania lewej komory; kwantyfikacja niepewności

EN

self-tuning controller; cardiovascular modelling; left ventricular assist device control; uncertainty quantification

• Czasopismo: Biocybernetics and Biomedical Engineering
• Rocznik: 2020
• Tom: Vol. 40, no. 1
• Strony: 559--573
• Opis fizyczny: Bibliogr. 48 poz., rys., tab., wykr.

Twórcy

autor

Son, Jeongeun

• Department of Chemical & Biomolecular Engineering, Clarkson University, Potsdam, NY, USA

autor

Du, Dongping

• Department of Industrial, Manufacturing & Systems Engineering, Texas Tech University, Lubbock, TX, USA

autor

Du, Yuncheng

• Department of Chemical & Biomolecular Engineering, Clarkson University, Potsdam, NY, USA,

Bibliografia

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Uwagi

EN

This paper was partially presented at the 2019 American Control Conference (ACC), Philadelphia, PA, USA, July 10–12, 2019.

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).

Identyfikatory

DOI

10.1016/j.bbe.2020.01.014