A multi-objective optimisation approach for the linear modelling of cerebral autoregulation system.
Biosystems
; 241: 105231, 2024 Jul.
Article
em En
| MEDLINE
| ID: mdl-38754621
ABSTRACT
OBJECTIVE:
Dynamic cerebral autoregulation (dCA) has been addressed through different approaches for discriminating between normal and impaired conditions based on spontaneous fluctuations in arterial blood pressure (ABP) and cerebral blood flow (CF). This work presents a novel multi-objective optimisation (MO) approach for finding good configurations of a cerebrovascular resistance-compliance model.METHODS:
Data from twenty-nine subjects under normo and hypercapnic (5% CO2 in air) conditions was used. Cerebrovascular resistance and vessel compliance models with ABP as input and CF velocity as output were fitted using a MO approach, considering fitting Pearson's correlation and error.RESULTS:
MO approach finds better model configurations than the single-objective (SO) approach, especially for hypercapnic conditions. In addition, the Pareto-optimal front from the multi-objective approach enables new information on dCA, reflecting a higher contribution of myogenic mechanism for explaining dCA impairment.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Circulação Cerebrovascular
/
Homeostase
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
Biosystems
Ano de publicação:
2024
Tipo de documento:
Article