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[A stress-dependent pulsatile cardiovascular model as the basis for regulating artificial hearts]
Biomedizinische Technik. Biomedical Engineering
|May 1, 1989
Summary
This study presents a pulsatile cardiovascular model incorporating exercise adaptations for closed-loop blood pump control. It details an artificial heart model and a pulse frequency modulated control system for enhanced circulation management.
Area of Science:
- Biomedical Engineering
- Physiology
- Control Systems
Context:
- Developing closed-loop control for blood pumps necessitates accurate cardiovascular system modeling.
- Natural physiological adaptations during exercise must be integrated into these models.
- Existing models may not fully capture the complexities of cardiovascular response.
Purpose:
- To develop and simulate a pulsatile cardiovascular model that accounts for exercise-induced adaptations.
- To present a model of an artificial heart with nonlinear stroke volume limitations.
- To describe a pulse frequency modulated (PFM) control system for artificial heart circulation.
Summary:
- A pulsatile cardiovascular model is described, integrating baroreceptor reflex, heart rate changes, contractility, peripheral resistance, venous tone, and nonlinear vessel compliance during exercise.
- An artificial heart model is presented, addressing nonlinear stroke volume limitations.
- A pulse frequency modulated (PFM) control system for artificial heart circulation is introduced.
Impact:
- Provides a sophisticated model for simulating and testing advanced blood pump control systems.
- Facilitates the development of more effective artificial heart control strategies.
- Contributes to improved understanding of cardiovascular dynamics under artificial support during physiological stress.