Open AccessSimulation of Axial Flow Left Ventricular Assist Device’s Control Algorithm Used to Assist Different Levels of Heart Failure Based on the Circuit Model
Author(s) -
Houfu Wang,
Yunpeng Zhang,
Xiangyu Wu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2005/1/012192
Subject(s) - heart failure , ventricular assist device , cardiology , pulse (music) , blood pressure , pulse pressure , diastole , medicine , blood flow , hemodynamics , aortic pressure , stroke volume , ventricular pressure , algorithm , biomedical engineering , control theory (sociology) , computer science , engineering , voltage , electrical engineering , control (management) , ejection fraction , artificial intelligence
Modelling blood circulation is difficult. Due to the similarity of blood circulation and circuit loop, a numerical model coupled with the cardiovascular system and the left ventricular assist device is used to study the control algorithm of left ventricular assist devices in this study. According to severity, heart failure can be divided into three levels, and is simulated by varying the time-varying capacitance. Most of the left ventricular assist devices adopt the control algorithm of constant speed, which can reduce the pulsation of aortic pressure, and it is especially obvious in level III heart failure. We compare the positive pulse mode and the constant speed mode, and the results show that the positive pulse could increase systolic blood pressure and reduce diastolic blood pressure, which is more in line with the human aortic pulsation, and is more suitable for patients with high level of heart failure.