Assessing ultrasonographic optic nerve sheath diameter in animal model with anesthesia regimens
ABSTRACT Purpose: To determine the normal optical nerve sheath (ONS) diameter ultrasonography (ONSUS) and evaluate the possible effects of drugs on ONS diameter during anesthetic induction in healthy pigs. Methods: Healthy piglets were divided into three groups: a control group, that received xylazine and ketamine (X/K); other that received xylazine, ketamine and propofol (X/K/P); and a third group that received xylazine, ketamine, and thiopental (X/K/T). The sheath diameter was assessed by ultrasonography calculating the average of three measurements of each eye from the left and right sides. Results: 118 animals were anesthetized (49 X/K 33 X/K/P and 39 X/K/T). Mean ONS sizes on both sides in each group were 0.394 ± 0.048 (X/K), 0.407 ± 0.029 (X/K/P) and 0.378 ± 0.042 cm (X/K/T) (medians of 0.400, 0.405 and 0.389, respectively). The ONS diameter varied from 0.287–0.512 cm (mean of 0.302 ± 0.039 cm). For group X/K, the mean diameter was 0.394 ± 0.048 cm. Significant differences in ONS sizes between the groups P and T (X/K/P > X/K/T, p = 0.003) were found. No statistically significant differences were detected when other groups were compared (X/K = X/K/P, p = 0.302; X/K = X/K/T, p = 0.294). Conclusions: Sedation with thiopental lead to significative ONS diameter reduction in comparison with propofol. ONSUS may be useful to evaluate responses to thiopental administration.
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Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia
2022
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oai:scielo:S0102-865020220003002072022-06-13Assessing ultrasonographic optic nerve sheath diameter in animal model with anesthesia regimensAzevedo,Maira de Robertisde-Lima-Oliveira,MarceloBelon,Alessandro RodrigoBrasil,SérgioTeixeira,Manoel JacobsenPaiva,Wellingson SilvaBor-Seng-Shu,Edson Intracranial Pressure Intracranial Hypertension Experimental Research ABSTRACT Purpose: To determine the normal optical nerve sheath (ONS) diameter ultrasonography (ONSUS) and evaluate the possible effects of drugs on ONS diameter during anesthetic induction in healthy pigs. Methods: Healthy piglets were divided into three groups: a control group, that received xylazine and ketamine (X/K); other that received xylazine, ketamine and propofol (X/K/P); and a third group that received xylazine, ketamine, and thiopental (X/K/T). The sheath diameter was assessed by ultrasonography calculating the average of three measurements of each eye from the left and right sides. Results: 118 animals were anesthetized (49 X/K 33 X/K/P and 39 X/K/T). Mean ONS sizes on both sides in each group were 0.394 ± 0.048 (X/K), 0.407 ± 0.029 (X/K/P) and 0.378 ± 0.042 cm (X/K/T) (medians of 0.400, 0.405 and 0.389, respectively). The ONS diameter varied from 0.287–0.512 cm (mean of 0.302 ± 0.039 cm). For group X/K, the mean diameter was 0.394 ± 0.048 cm. Significant differences in ONS sizes between the groups P and T (X/K/P > X/K/T, p = 0.003) were found. No statistically significant differences were detected when other groups were compared (X/K = X/K/P, p = 0.302; X/K = X/K/T, p = 0.294). Conclusions: Sedation with thiopental lead to significative ONS diameter reduction in comparison with propofol. ONSUS may be useful to evaluate responses to thiopental administration.info:eu-repo/semantics/openAccessSociedade Brasileira para o Desenvolvimento da Pesquisa em CirurgiaActa Cirúrgica Brasileira v.37 n.3 20222022-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502022000300207en10.1590/acb370308 |
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Azevedo,Maira de Robertis de-Lima-Oliveira,Marcelo Belon,Alessandro Rodrigo Brasil,Sérgio Teixeira,Manoel Jacobsen Paiva,Wellingson Silva Bor-Seng-Shu,Edson |
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Azevedo,Maira de Robertis de-Lima-Oliveira,Marcelo Belon,Alessandro Rodrigo Brasil,Sérgio Teixeira,Manoel Jacobsen Paiva,Wellingson Silva Bor-Seng-Shu,Edson Assessing ultrasonographic optic nerve sheath diameter in animal model with anesthesia regimens |
author_facet |
Azevedo,Maira de Robertis de-Lima-Oliveira,Marcelo Belon,Alessandro Rodrigo Brasil,Sérgio Teixeira,Manoel Jacobsen Paiva,Wellingson Silva Bor-Seng-Shu,Edson |
author_sort |
Azevedo,Maira de Robertis |
title |
Assessing ultrasonographic optic nerve sheath diameter in animal model with anesthesia regimens |
title_short |
Assessing ultrasonographic optic nerve sheath diameter in animal model with anesthesia regimens |
title_full |
Assessing ultrasonographic optic nerve sheath diameter in animal model with anesthesia regimens |
title_fullStr |
Assessing ultrasonographic optic nerve sheath diameter in animal model with anesthesia regimens |
title_full_unstemmed |
Assessing ultrasonographic optic nerve sheath diameter in animal model with anesthesia regimens |
title_sort |
assessing ultrasonographic optic nerve sheath diameter in animal model with anesthesia regimens |
description |
ABSTRACT Purpose: To determine the normal optical nerve sheath (ONS) diameter ultrasonography (ONSUS) and evaluate the possible effects of drugs on ONS diameter during anesthetic induction in healthy pigs. Methods: Healthy piglets were divided into three groups: a control group, that received xylazine and ketamine (X/K); other that received xylazine, ketamine and propofol (X/K/P); and a third group that received xylazine, ketamine, and thiopental (X/K/T). The sheath diameter was assessed by ultrasonography calculating the average of three measurements of each eye from the left and right sides. Results: 118 animals were anesthetized (49 X/K 33 X/K/P and 39 X/K/T). Mean ONS sizes on both sides in each group were 0.394 ± 0.048 (X/K), 0.407 ± 0.029 (X/K/P) and 0.378 ± 0.042 cm (X/K/T) (medians of 0.400, 0.405 and 0.389, respectively). The ONS diameter varied from 0.287–0.512 cm (mean of 0.302 ± 0.039 cm). For group X/K, the mean diameter was 0.394 ± 0.048 cm. Significant differences in ONS sizes between the groups P and T (X/K/P > X/K/T, p = 0.003) were found. No statistically significant differences were detected when other groups were compared (X/K = X/K/P, p = 0.302; X/K = X/K/T, p = 0.294). Conclusions: Sedation with thiopental lead to significative ONS diameter reduction in comparison with propofol. ONSUS may be useful to evaluate responses to thiopental administration. |
publisher |
Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia |
publishDate |
2022 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0102-86502022000300207 |
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