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Modeling state entropy of the EEG and auditory evoked potentials: hypnotic and analgesic interactions

dc.contributor.authorCastro, Ana
dc.contributor.authorAmorim, Pedro
dc.contributor.authorNunes, Catarina S.
dc.date.accessioned2023-06-01T08:09:54Z
dc.date.available2023-06-01T08:09:54Z
dc.date.issued2007
dc.description.abstractBecause of the complexity of raw electroencephalogram (EEG), for the anesthesiologist it is very difficult to evaluate the patient’s hypnosis state. Because of this, several depth of anesthesia monitors have been developed, and are in current use at the operating room (OR). These monitors convert the information supplied by the EEG or derived signals into a simple, easy to understand index. Nowadays, general anesthesia is controlled only by the clinician, which decides what is the best drug combination for the patient, regarding all information given by monitors and sensors in the OR. In this work, we collected data from two study groups with auditory evoked potentials (AEP) monitoring, and Entropy (SE) monitoring. A model was fitted to the signals and the Hill equation parameters adjusted, in both study groups. The objective was to predict hypnosis indices, regarding only the drugs administered to a patient, and capture the initial individual patient characteristics that might influence the drugs interaction in the human body. Hypnotic and analgesic drugs interact in different ways throughout the anaesthesia stages. The models obtained captured the different dynamic interaction of drugs, during the induction and maintenance phases, demonstrating that the model must have incorporated all this information in order to perform satisfactorily. Other information like haemodynamic variables might be included in the search for the optimum model.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationA. Castro, P. Amorim and C. S. Nunes, "Modeling State Entropy of the EEG and Auditory Evoked Potentials - Hypnotic and Analgesic Interactions," 2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Lyon, France, 2007, pp. 1949-1952pt_PT
dc.identifier.doi10.1109/IEMBS.2007.4352699pt_PT
dc.identifier.isbn1-4244-0788-5
dc.identifier.pmid18002365
dc.identifier.urihttp://hdl.handle.net/10400.2/13942
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherIEEEpt_PT
dc.relation.publisherversionhttps://ieeexplore.ieee.org/document/4352699pt_PT
dc.titleModeling state entropy of the EEG and auditory evoked potentials: hypnotic and analgesic interactionspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceLyon, Francept_PT
oaire.citation.endPage1952pt_PT
oaire.citation.startPage1949pt_PT
oaire.citation.title29th Annual International Conference of the IEEE Engineering in Medicine and Biology Societypt_PT
person.familyNameAmorim
person.familyNameNunes
person.givenNamePedro
person.givenNameCatarina S.
person.identifier.ciencia-id691F-CDC2-E26A
person.identifier.orcid0000-0001-7466-4174
person.identifier.orcid0000-0002-8357-0994
person.identifier.scopus-author-id55429654100
rcaap.rightsrestrictedAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublication1ef321dd-4f09-493c-b801-e9a99b28947d
relation.isAuthorOfPublicationcc3069ec-f930-455f-9226-b77e5d2dc14b
relation.isAuthorOfPublication.latestForDiscovery1ef321dd-4f09-493c-b801-e9a99b28947d

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