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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Avalia??o cl?nica, termogr?fica e morfol?gica da utiliza??o da pele de r?-touro (Lithobates catesbeianus) e do polietileno de baixa densidade laminar bolhoso (pl?stico bolha) na hernioplastia da parede abdominal de Rattus norvegicus, variedade wistar / Clinical, thermographic and morphological evaluation of the use of skin frog bull (Lithobates catesbeianus) and polyethylene low density bullous laminar (bubble wrap) in hernia repair of abdominal wall Rattus norvegicus, Wistar variety

Jorge, Siria da Fonseca 07 December 2016 (has links)
Submitted by Celso Magalhaes (celsomagalhaes@ufrrj.br) on 2017-08-23T12:00:12Z No. of bitstreams: 1 2016 - Siria da Fonseca Jorge.pdf: 4082208 bytes, checksum: 0cf00af2f5c5490e467e6dfd2ecf8938 (MD5) / Made available in DSpace on 2017-08-23T12:00:12Z (GMT). No. of bitstreams: 1 2016 - Siria da Fonseca Jorge.pdf: 4082208 bytes, checksum: 0cf00af2f5c5490e467e6dfd2ecf8938 (MD5) Previous issue date: 2016-12-07 / Hernioplasties are included in the most performed surgeries in Human Medicine. Despite the high frequency, its complications and recurrences still make them the great challenge of modern surgery. Currently several types of screens are available for hernioplasties, it is emphasized that its application in the correction of hernia defects has been exhaustively tested in order to achieve an ideal prosthesis in every sense, with biocompatibility, little or no formation of peritoneal adhesions, texture And flexibility, providing the necessary strength for protection of the viscera and yet allowing perfect movement of the abdomen. The present study had as main objective to evaluate the efficacy and local reaction of the implant using low density polyethylene (LDPE) bullous lamina, bubble wrap and frog-bull skin for correction of hernia defects in the abdominal wall of Rattus norvegicus, Wistar variety. A total of 40 male rats were divided into two groups, one received the blister plastic implant and the other frog skin implant. A follow-up of 3.0 cm in the longitudinal axis by 1.0 cm was taken on the transverse axis including all planes of the abdominal musculature, from the midline towards the left side of the abdominal wall, creating a fault that was covered by one of the prostheses proposed according to the group in question. The animals were evaluated through monitoring of clinical, thermographic, macroscopic, histological and histopathological parameters at 7, 15, 30 and 90 postoperative days. Clinically, none of the two prostheses tested presented alterations such as abscesses, entero-cutaneous fistulas, eventrations or eviscerations. Macroscopically, all the animals had adhesions considered to be mild, mainly in the region of the suture of the prostheses. Infrared thermography proved effective as an evaluation method of inflammation and involution of the prostheses together with the morphological analysis. After analyzing all the results it was concluded that the bullfrog skin caused an initial inflammatory process that was reduced until the cure at 90 postoperative days, being considered a promising biomaterial for hernioplasties and the lamellar PEPD bullous produced a An initial inflammatory process that regressed up to 30 postoperative days, but tripled at 90 postoperative days, being considered a good material for temporary implants up to a maximum of 30 days and new studies with longer implantation periods of this biomaterial So that it is used safely in corrections of hernia defects definitively / As hernioplastias incluem-se nas cirurgias mais realizadas na Medicina Humana. Apesar da alta frequ?ncia, suas complica??es e recorr?ncias ainda as tornam o grande desafio da cirurgia moderna. Atualmente v?rios tipos de telas est?o dispon?veis para hernioplastias, ressalta-se que sua aplica??o na corre??o de defeitos herni?rios tem sido exaustivamente testada com o prop?sito de conseguir uma pr?tese ideal em todos os sentidos, com biocompatibilidade, pouca ou nenhuma forma??o de ader?ncias peritoneais, textura e flexibilidade compat?veis, proporcionando a resist?ncia necess?ria para a prote??o das v?sceras e ainda assim, permitindo a perfeita movimenta??o do abdome. O presente estudo teve como principal objetivo avaliar a efic?cia e rea??o local do implante utilizando polietileno de baixa densidade (PEBD) laminar bolhoso, pl?stico bolha e pele de r?-touro para corre??o de defeitos herni?rios em parede abdominal de Rattus norvegicus, variedade Wistar. Foram utilizados 40 ratos, machos divididos em dois grupos, um recebeu o implante de pl?stico bolha e o outro implante de pele de r?. Foi retirado um seguimento de 3,0 no eixo longitudinal por 1,0 cm no eixo transversal incluindo todos os planos da musculatura abdominal, a partir da linha m?dia em dire??o ao lado esquerdo da parede abdominal, criando-se uma falha que foi recoberta por uma das pr?teses propostas de acordo com o grupo em quest?o. Os animais foram avaliados atrav?s de acompanhamento de par?metros cl?nicos, termogr?ficos, macrosc?picos, histol?gicos e histopatol?gicos aos 7, 15, 30 e 90 dias de p?s-operat?rio. Clinicamente nenhuma das duas pr?teses testadas apresentou altera??es como abscessos, f?stulas entero-cut?neas, eventra??es ou eviscera??es. Macroscopicamente todos os animais apresentaram ader?ncias consideradas leves, principalmente, na regi?o da sutura das pr?teses. A termografia infravermelha se mostrou eficaz como m?todo avaliativo de inflama??o e da involu??o das pr?teses em conjunto com a an?lise morfol?gica. Ap?s a an?lise de todos os resultados concluiu-se que a pele de r?-touro provocou um processo inflamat?rio inicial que foi reduzindo at? a cura aos 90 dias de p?s-operat?rio, sendo considerada um biomaterial promissor para hernioplastias e o PEBD laminar bolhoso produziu um processo inflamat?rio inicial que regrediu at? os 30 dias de p?s-operat?rio, entretanto triplicou aos 90 dias de p?s-operat?rio sendo considerado um bom material para implantes tempor?rios de at? no m?ximo 30 dias e sendo necess?rio novos estudos com per?odos de implanta??o mais longos deste biomaterial para que seja utilizado com seguran?a nas corre??es de defeitos herni?rios de modo definitivo.

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