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Vet Surg ; 32(4): 359-64, 2003.
Artigo em Inglês | MEDLINE | ID: mdl-12865998

RESUMO

OBJECTIVE: To describe and compare the time of onset and intensity of thoracic duct coloration after injection of methylene blue into a mesenteric or popliteal lymph node. STUDY DESIGN: Experimental study. ANIMALS: Twenty adult dogs. METHODS: A right tenth intercostal thoracotomy, a right paracostal laparotomy, and an approach to the right popliteal lymph node were performed on each dog. Methylene blue (0.5 mg/kg of a 1% solution, maximum 10 mg) was injected into either a mesenteric (group M, 10 dogs) or popliteal (group P, 10 dogs) lymph node. Thoracic duct color was graded (0 to 3) every 5 minutes for 60 minutes. Statistical analysis was performed on mean thoracic duct color grade data, on number of successful outcomes between groups M and P, and between weight groups. RESULTS: Coloration of the thoracic duct occurred in all group M dogs and 6 group P dogs. Coloration was first recorded 0 to 10 minutes after injection in all dogs and persisted for 60 minutes in 15 dogs. Mean thoracic duct color grade was significantly increased postinjection compared with preinjection at all times in group M. More successful outcomes occurred in group M (P =.03). CONCLUSIONS: Methylene blue injected into mesenteric or popliteal lymph nodes was successful in coloring the thoracic duct, but both mean grade and number of successful outcomes were significantly higher after mesenteric injection. CLINICAL RELEVANCE: Thoracic duct coloration after lymph node injection occurred within 10 minutes and persisted for 60 minutes. This information is useful in planning thoracic duct ligation in cases of chylothorax when observation of the duct is desired. Injection of both lymph node sites was successful, but mesenteric node injection was a more reliable technique.


Assuntos
Quilotórax/veterinária , Meios de Contraste/administração & dosagem , Doenças do Cão/terapia , Embolização Terapêutica/veterinária , Linfonodos/patologia , Azul de Metileno/administração & dosagem , Ducto Torácico/patologia , Animais , Quilotórax/terapia , Cães , Embolização Terapêutica/métodos , Feminino , Membro Posterior , Injeções/veterinária , Masculino , Mesentério , Fatores de Tempo
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