Use of a Mechanical Circulatory Support Simulation to Study Pump Interactions With the Variable Hemodynamic...

Area of Science:

• Biomedical Engineering
• Computational Physiology
• Cardiovascular Research

Background:

• Mechanical circulatory support (MCS) devices are crucial for managing advanced heart failure.
• Understanding the complex interactions between MCS devices and the human circulatory system is vital for optimizing patient outcomes.
• Existing research methods face limitations in exploring a wide range of patient-specific conditions and device interactions.

Purpose of the Study:

• To develop and demonstrate a versatile computer simulation, the Virtual Mock Loop (VML).
• To explore and comprehend the interactions between various MCS devices and diverse cardiovascular conditions.
• To provide a user-friendly, portable tool for researchers outside of specialized software development environments.

Main Methods:

• Development of a lumped-parameter model of the human circulatory system.
• Integration of various continuous-flow pumps (left, right, biventricular assist devices) and a total artificial heart.
• Implementation of a disease-based input panel for simulating cardiovascular diseases (heart failure, valve dysfunction) and vascular resistance.
• Menu-driven output providing hemodynamic parameters, flow, pressure, and volume graphical representations.

Main Results:

• The VML allows for the specification of diverse MCS devices and complex hemodynamic inputs.
• The simulation can model various cardiovascular disease states and their impact on circulatory function.
• Graphical and summary outputs provide comprehensive hemodynamic insights for analysis.

Conclusions:

• The Virtual Mock Loop serves as a powerful system analysis tool for studying MCS devices.
• It facilitates a deeper understanding of patient-specific pump interactions under a wide array of conditions.
• The VML enhances experimental research by offering a portable and accessible simulation environment.