Adaptive computer control of anesthesia in humans

This paper presents an efficient computer control technique for regulation of anesthesia in humans. The anesthetic used is propofol and the objective is to control the degree of hypnosis of the patient. The paper describes the basic hardware/software setup of the system and the closed-loop methodolo...

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Bibliographic Details
Published in:Computer methods in biomechanics and biomedical engineering 2009-12, Vol.12 (6), p.727-734
Main Authors: Méndez, Juan Albino, Torres, Santiago, Reboso, José Antonio, Reboso, Héctor
Format: Article
Language:English
Subjects:
adaptive control
Anesthesia
Anesthesia - methods
anesthesia control
Anesthetics
Computer applications
computer control
Computer programs
Computers
Feedback
Humans
Hypnosis
Oscillations
Propofol
proportional plus integral control
software
Therapy, Computer-Assisted
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Summary:This paper presents an efficient computer control technique for regulation of anesthesia in humans. The anesthetic used is propofol and the objective is to control the degree of hypnosis of the patient. The paper describes the basic hardware/software setup of the system and the closed-loop methodologies. The bispectral index (BIS) is considered as the feedback signal. The control methods proposed here are based in the use of proportional integral controllers with dead-time compensation to avoid undesirable oscillations in the BIS signal during the process. The compensation is based on the Smith predictor. To guarantee the applicability of the method to different patients, an adaptive module to tune the compensator is developed. Some real and simulated results are presented in this work to attest the efficiency of the methods used.
ISSN:1025-5842
1476-8259
DOI:10.1080/10255840902911528