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Chi-Ngon Nguyen, Olaf Simanski, Ralf Kähler, Agnes Schubert, Matthias Janda, Jörn Bajorat, Rainer Hofmockel, Bernhard P. Lampe

Control of Mean Arterial Blood Pressure for Controlled Hypotension

Keywords: Biomedical control, mean arterial pressure, feedback control

This paper presents different concepts for controlling the mean arterial blood pressure. In addition of a self-tuning PID-controller a method of fuzzy gain scheduling for a PID-controller applied to mean arterial pressure regulation during general anesthesia by sodium nitroprusside (SNP) infusion will be developed. A supervising algorithm is used for online updating the fuzzy gain scheduler of the PID-controller to act stronger against the body reaction. A new model based on Slate´s model and Furutani´s ideas was developed for testing the controller. Simulation and clinical results in deep hypotensive controls at 40 mmHg on pigs indicate the safety and stability of designed controller.

at – Automatisierungstechnik, Oldenbourg Wissenschaftsverlag

Print ISSN: 0178-2312
Volume: 53, 12/2005
Pages: 573 - 580

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