The influence of intracranial hypertension on static cerebral autoregulation

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art_DE-LIMA-OLIVEIRA_The_influence_of_intracranial_hypertension_on_static_cerebral_2020.PDF (1.37 MB)
Citações na Scopus
3
Tipo de produção
article
Data de publicação
2020
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
TAYLOR & FRANCIS LTD
Autores
Citação
BRAIN INJURY, v.34, n.9, p.1270-1276, 2020
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Objectives To analyze the influences of mild and severe intracranial hypertension on cerebral autoregulation (CA). Patients and Methods Duroc piglets were monitored with an intracranial pressure (ICP) catheter. Intracranial hypertension was induced via infusion of 4 or 7 ml of saline solution by a bladder catheter that was inserted into the parietal lobe. The static cerebral autoregulation (sCA) index was evaluated via cerebral blood flow velocities (CBFv). Piglets with ICPs <= 25 and > 25 mmHg were considered as group 1 and 2, respectively. Continuous variables were evaluated using the Kolmogorov-Smirnov goodness-of-fit test. The main parameters were collected before and after ICH induction and compared using two-factor mixed-design ANOVAs with the factor of experimental group (mild and severe ICH). Results In group 1 (ICP <= 25 mmHg), there were significant differences in sCA (p= .01) and ICP (p= .0002) between the basal and balloon inflation conditions. In group 2 (ICP > 25 mmHg), there were significant differences in CBFv (p= .0072), the sCA index (p= .0001) and ICP (p= .00001) between the basal and balloon inflation conditions. Conclusion We conclude that ICH may have a direct effect on mild and severe sCA.
Palavras-chave
Mild intracranial hypertension, cerebral autoregulation, intracranial hypertension, experimental model
URI
https://observatorio.fm.usp.br/handle/OPI/37797
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Coleções
Artigos e Materiais de Revistas Científicas - FM/MNE
Artigos e Materiais de Revistas Científicas - HC/ICHC
Artigos e Materiais de Revistas Científicas - LIM/26
Artigos e Materiais de Revistas Científicas - LIM/45
Artigos e Materiais de Revistas Científicas - LIM/62