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A model for the design and evaluation of algorithms for closed-loop cardiovascular therapy
E A Woodruff1, J F Martin, M Omens
1PLC Medical Systems, Inc., Milford, MA 01757, USA. e_woodruff@plcmed.com
IEEE Transactions on Bio-Medical Engineering
|August 1, 1997
Summary
Simulation studies significantly reduce the time and cost of developing closed-loop drug delivery systems. This approach allows comprehensive evaluation of controllers across diverse patient populations, optimizing performance for critical applications like blood pressure control.
Area of Science:
- Biomedical engineering
- Computational physiology
- Pharmacometrics
Background:
- Developing closed-loop drug delivery systems is time-intensive and expensive.
- Animal testing is a significant contributor to development costs and time.
Purpose of the Study:
- To present a novel simulator for designing and evaluating closed-loop drug delivery systems.
- To demonstrate the utility of simulation studies in reducing development time and cost.
Main Methods:
- Developed a simulator incorporating a nonlinear cardiovascular model, physiological regulation, and drug pharmacology.
- Evaluated closed-loop control algorithms using the simulator.
- Included nonlinear pulsatile-flow cardiovascular model, physiological regulatory mechanisms, and pharmacology of four cardiovascular drugs.
Main Results:
- The simulator facilitates evaluation of closed-loop controller performance across a wide patient spectrum.
- Simulation studies offer repeatable and cost-effective performance assessment.
- Enabled design and evaluation of self-tuning regulator (STR) and multiple model adaptive controller (MMAC) algorithms.
Conclusions:
- Simulation studies are a viable alternative to animal experiments for closed-loop system development.
- The developed simulator aids in optimizing blood pressure control algorithms for cardiac surgery patients.
- This approach accelerates the design and validation of advanced drug delivery systems.