Estimation of intracranial pressure by ultrasound of the optic nerve sheath in an animal model of intracranial hypertension

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art_JENG_Estimation_of_intracranial_pressure_by_ultrasound_of_the_2021.PDF (547.19 KB)
Citações na Scopus
6
Tipo de produção
article
Data de publicação
2021
DOI
Scopus
Web of Science
PubMed
Título da Revista
ISSN da Revista
Título do Volume
Editora
ELSEVIER SCI LTD
Autores
ROBERTIS, Maira
RUBIANO, Andres Mariano
GODOY, Daniel Agustin
Citação
JOURNAL OF CLINICAL NEUROSCIENCE, v.86, p.174-179, 2021
Projetos de Pesquisa
Unidades Organizacionais
Fascículo
Resumo
Background: Ultrasound of the optic nerve sheath diameter (ONSD) has been used as a non-invasive and cost-effective bedside alternative to invasive intracranial pressure (ICP) monitoring. However, ONSD time-lapse behavior in intracranial hypertension (ICH) and its relief by means of either saline infusion or surgery are still unknown. The objective of this study was to correlate intracranial pressure (ICP) and ultrasonography of the optic nerve sheath (ONS) in an experimental animal model of ICH and deter-mine the interval needed for ONSD to return to baseline levels. Methods: An experimental study was conducted on 30 pigs. ONSD was evaluated by ultrasound at differ-ent ICPs generated by intracranial balloon inflation, saline infusion, and balloon deflation, and measured using an intraventricular catheter. Results: All variables obtained by ONS ultrasonography such as left, right, and average ONSD (AON) were statistically significant to estimate the ICP value. ONSD changed immediately after balloon inflation and returned to baseline after an average delay of 30 min after balloon deflation (p = 0.016). No statistical sig-nificance was observed in the ICP and ONSD values with hypertonic saline infusion. In this swine model, ICP and ONSD showed linear correlation and ICP could be estimated using the formula:-80.5 + 238.2 x AON. Conclusion: In the present study, ultrasound to measure ONSD showed a linear correlation with ICP, although a short delay in returning to baseline levels was observed in the case of sudden ICH relief.
Palavras-chave
Optic nerve sheath diameter, Ultrasonography, Brain injury, Intracranial hypertension, Animal model
URI
https://observatorio.fm.usp.br/handle/OPI/40719
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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 - HC/InRad
Artigos e Materiais de Revistas Científicas - LIM/26
Artigos e Materiais de Revistas Científicas - LIM/45
Artigos e Materiais de Revistas Científicas - LIM/62