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Rela??es anat?micas entre a origem e a distribui??o da art?ria cel?aca no gato dom?stico. / Anatomical relationships of the origin and distribution of the celiac artery in the domestic cat.Silva, Barbara Xavier 27 August 2010 (has links)
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Previous issue date: 2010-08-27 / The knowledge of anatomical variations is important for radiological and surgical procedures
and has a theoretical and practical significance for experimental research and surgical practice
in domestic animals. The aim of this study was to describe the origin and measures of the
main branches of celiac artery in domestic cats of both sexes. The anatomical dissections were
performed on 30 cadavers of adult cats, 15 male and 15 female, with a rostrum-sacral length
of 47.9 cm and 46.6 cm respectively. Cats were positioned in right lateral decubit and a
thoracic incision was made to remove the 6th to 10th ribs to cannulate the thoracic portion of
aorta. The vascular system was fixated with 10% formaldehyde solution and then filled with
coloured Petrolatex S-65. After five days emerged in 10% formaldehyde solution, all the
animals were washed in current water. The celiac artery and its proximal branches were ?in
situ? dissected, lengthen and measured with a pachymeter. No organs were removed. The
average length and standard deviation of the celiac, lienal, left gastric and hepatic artery were
calculated and compared in both sexes by unpaired t test. To verify if the frequency
distributions observed for the 30 examined animals is in accordance with the literature, we
performed the Qui-square test, with a 5% level of significance, to test if the nullity hypothesis
is true for the origin of the celiac artery, number of gastric arteries, and the number of lienal
artery main ramifications. The relationship between the celiac, lienal, left gastric and hepatic
artery length, with rostrum-sacral length was calculated by the correlation coefficient ?r?
varying between -1 r +1. The celiac artery arose as a single artery in 15 (100%) females.
In males the celiac artery arose as a single artery in 12 (80%) cats; in three (20%) cats we
observed the presence of celiac-mesenteric trunk. The average length of the celiac artery in
females was 1.32 cm, and originated at the level of the 13th thoracic vertebra in two (13.3%)
animals, between the 13th and the 1st lumbar vertebra in one (6.7%) animal, at the level of 1st
lumbar vertebra in six (40%) cats, and between the 1st and 2nd lumbar vertebra in six (40%)
cats. The average length of the celiac artery in males was 1.27 cm, and originated at the level
of 13th thoracic vertebra in three (20%) animals, between 13th thoracic vertebra and 1st lumbar
vertebra in three (20%) animals, at the level of 1st lumbar vertebra in four (26.7%) animals,
between 1st and 2nd lumbar vertebra in one (6.7%) and at the level of the 2nd lumbar vertebra
in four (26.7%) animals. In female the gastrolienal trunk was the predominant morphological
arrangement (53.3%) with medium length of 0.31 cm. In males, the classic celiac trifurcation
was the predominant morphological arrangement (53.3%). No relation was observed between
the celiac, lienal, left gastric and hepatic artery length and the rostrum-sacral length in cats.
The origin of the celiac artery, number of gastric arteries, and the number of lienal artery main
ramifications are not gender dependent. / O conhecimento das varia??es anat?micas ? importante para procedimentos cir?rgicos e
radiol?gicos e tem um significado pr?tico e te?rico para a pesquisa experimental e a pr?tica
cir?rgica em animais dom?sticos. O objetivo deste estudo foi descrever a origem e medidas da
art?ria cel?aca e de suas ramifica??es em gatos de ambos sexos correlacionando seus valores
com o comprimento do animal. As dissec??es foram realizadas em 30 cad?veres de gatos
adultos, 15 machos e 15 f?meas, com m?dia do comprimento rostro-sacral de 47,9cm e 46,6
cm respectivamente. Os gatos foram posicionados em dec?bito lateral direito e feita uma
incis?o tor?cica para remo??o da 6? a 10? costelas para canula??o da por??o tor?cica da aorta.
Em seguida, o sistema vascular foi fixado com solu??o de formaldeido a 10% e preenchidos
com solu??o de Petrolatex S-65 corado. Ap?s cinco dias imersos em solu??o de formaldeido a
10%, todos os animais foram lavados em ?gua corrente. A art?ria cel?aca e seus ramos
proximais foram dissecados "in situ" e medidos com um paqu?metro. O comprimento m?dio e
desvio padr?o da art?ria cel?aca, lienal, g?strica esquerda e hep?tica foram calculados e
comparados em ambos os sexos atrav?s do teste t n?o pareado. Com o intuito de verificar se a
distribui??o de freq??ncias observadas para os 30 animais examinados est? de acordo com a
literatura, aplicou-se o teste do X2 (qui-quadrado) considerando o n?vel de signific?ncia 5%
para testar se a hip?tese de nulidade ? verdadeira, no que diz respeito a origem da art?ria
cel?aca, n?mero de art?rias g?strica, e n?mero de ramifica??es principais da art?ria lienal. Em
rela??o ao comportamento conjunto do comprimento da art?ria cel?aca, lienal, g?strica
esquerda e hep?tica em fun??o do comprimento rostro-sacral, optou-se por calcular o
coeficiente de correla??o ?r?, que pode variar entre -1 r +1. A art?ria cel?aca surgiu como
uma art?ria ?nica em 15 (100%) f?meas examinadas. Nos machos a art?ria cel?aca surgiu
como uma art?ria ?nica em 12 (80%) gatos e em tr?s (20%) gatos foi observada a presen?a do
tronco cel?aco-mesent?rico. O comprimento m?dio da art?ria cel?aca nas f?meas foi de 1,32
cm, emergindo em n?vel da 13? v?rtebra tor?cica em dois (13,3%) animais, entre a 13?
v?rtebra tor?cica e a 1? v?rtebra lombar em um (6,7%) animal, em n?vel da 1? v?rtebra lombar
em seis (40%) animais, e entre a 1? e 2? v?rtebra lombar em seis (40%) animais. O
comprimento m?dio da art?ria cel?aca no sexo masculino foi de 1,27 cm, emergindo em n?vel
da 13? v?rtebra tor?cica em tr?s (20%) animais, entre 13? v?rtebra tor?cica e 1? v?rtebra
lombar em tr?s (20%) animais, em n?vel da 1? v?rtebra lombar em quatro (26,7%) animais,
entre a 1? e 2? v?rtebra lombar em um (6,7%) e em n?vel da 2? v?rtebra lombar em quatro
(26,7%) animais. Nas f?meas o tronco gastro-lienal foi o arranjo morfol?gico predominante
(53,3%) com um comprimento m?dio de 0,31 cm. Nos machos, a trifurca??o cl?ssica da
art?ria cel?aca foi o arranjo morfol?gico predominante (53,3%). N?o foi observada rela??o
entre o comprimento da art?ria cel?aca, lienal, g?strica esquerda e hep?tica em fun??o do
comprimento rostro-sacral. A origem da art?ria cel?aca, n?mero de art?rias g?stricas e n?mero
de ramifica??es principais da art?ria lienal independem do sexo.
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