Fuzzy logic control of mechanical ventilation during anaesthesia.

Schäublin, J.; Derighetti, M.; Feigenwinter, P.; Petersen-Felix, S.; Zbinden, A. M. (1996). Fuzzy logic control of mechanical ventilation during anaesthesia. British journal of anaesthesia, 77(5), pp. 636-641. Oxford University Press 10.1093/bja/77.5.636

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We have examined a new approach, using fuzzy logic, to the closed-loop feedback control of mechanical ventilation during general anaesthesia. This control system automatically adjusts ventilatory frequency (f) and tidal volume (VT) in order to achieve and maintain the end-tidal carbon dioxide fraction (FE'CO2) at a desired level (set-point). The controller attempts to minimize the deviation of both f and VT per kg body weight from 10 bpm and 10 ml kg-1, respectively, and to maintain the plateau airway pressure within suitable limits. In 30 patients, undergoing various surgical procedures, the fuzzy control mode was compared with human ventilation control. For a set-point of FE'CO2 = 4.5 vol% and during measurement periods of 20 min, accuracy, stability and breathing pattern did not differ significantly between fuzzy logic and manual ventilation control. After step-changes in the set-point of FE'CO2 from 4.5 to 5.5 vol% and vice versa, overshoot and rise time did not differ significantly between the two control modes. We conclude that to achieve and maintain a desired FE'CO2 during routine anaesthesia, fuzzy logic feedback control of mechanical ventilation is a reliable and safe mode of control.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Department of Intensive Care, Emergency Medicine and Anaesthesiology (DINA) > Clinic and Policlinic for Anaesthesiology and Pain Therapy

UniBE Contributor:

Petersen, Steen and Zbinden, Alex Martin

Subjects:

600 Technology > 610 Medicine & health

ISSN:

0007-0912

Publisher:

Oxford University Press

Language:

English

Submitter:

Marceline Brodmann

Date Deposited:

30 Sep 2020 19:12

Last Modified:

30 Sep 2020 19:12

Publisher DOI:

10.1093/bja/77.5.636

BORIS DOI:

10.7892/boris.115155

URI:

https://boris.unibe.ch/id/eprint/115155

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