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Acta cir. bras ; 24(4): 256-261, July-Aug. 2009. ilus, graf, tab
Article in English | LILACS | ID: lil-522970

ABSTRACT

PURPOSE: To create a feasible animal model of hernia that should be reliable to test the different types of mesh and/or surgical technique. METHODS: Thirty six male New Zealand albino rabbits were submitted to surgical procedure to provoke a standard hole in the abdominal wall. A metallic frame measuring 3 cm length and 1 cm width was allocated longitudinally on the umbilicus scar and the comprehensive three squared centimeters area was resected. A continuous 4.0 polyamide was performed to closure the subcutaneous and skin. RESULTS: During three weeks a score of signals/symptoms was performed to evaluate the wound and clinical conditions. No death or severe complications occurred. In the 3rd week the hernia ring and visceral adhesions were evaluated. Soft omental adherences were present in the hernial sac in all animals. The area of hernia ring ranged from 32.1±5.5 to 35.6±3.1 squared centimeter and the maximum was 39 cm² and the minimum was 30 cm². The model results in protrusion which was similar to a human incisional hernia with hernia sac, visceral adhesions and fibrous healing ring. CONCLUSION: The model was more reliable to test further techniques or mesh on hernia repair.


OBJETIVO: Criação de um modelo animal de hérnia que seja confiável para testar as diferentes técnicas e tipos de telas. MÉTODOS: Trinta e seis coelhos foram submetidos a procedimento operatório que provocou uma falha na parede abdominal. Uma moldura metálica com 3 cm de comprimento e 1 cm de largura foi colocada longitudinalmente sobre a cicatriz umbilical e ressecada uma área de 3cm². Uma sutura contínua de poliamida 4.0 fechou a tela subcutânea e pele. RESULTADOS: durante três semanas o escore de sinais e sintomas foi coletado para avaliar as condições clínicas e da ferida operatória. Não ocorreram óbitos ou complicações graves. Na terceira semana o anel herniário e aderências peritoneais foram avaliadas. Aderências frouxas estavam presentes no saco herniário em todos os animais. A área do anel herniário variou de 32.1±5.5 a 35.6±3.1 cm², com um máximo de 39 cm² e um mínimo de 30 cm². O modelo resultou numa protrusão de vísceras semelhante ao que ocorre em hérnia incisional de humanos. CONCLUSÃO: O modelo é factível para testar técnicas operatórias ou telas na reconstrução de hérnias incisionais.


Subject(s)
Animals , Male , Abdominal Wall/surgery , Disease Models, Animal , Hernia, Ventral/surgery , Rabbits , Surgical Mesh , Wound Healing/physiology , Chronic Disease , Random Allocation , Time Factors , Tissue Adhesions
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