Navegando por Palavras-chave "Anastomosis, Surgical"
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- ItemAcesso aberto (Open Access)Effects of preoperative irradiation using fractioned electron beam on the healing process of colocolonic anastomosis in rats undergoing early and late surgical intervention(Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia, 2013-01-01) Simões Neto, Joaquim [UNIFESP]; Reis Neto, José Alfredo Dos; Matos, Delcio [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); PUCCAMP Department of Surgery; Metropolitan University of SantosPURPOSE: To investigate the effects of preoperative fractioned irradiation using an electron beam on the healing process of colocolonic anastomoses in rats that underwent early and late surgical intervention. METHODS: Thirty Wistar rats, distributed as follows: group A (surgery only), group B (fractionated irradiation for 30 days (if), surgery seven days after the end of it), group C (if for 30 days, and surgery after 30 days of termination). On the seventh postoperative day the anastomotic segment analysis was taken, using tension tests, histology and collagen deposition evaluation by computerized analysis. RESULTS: Regarding the tension resistance of the anastomosis, there were no statistical differences (p=0.42). However, a significant increase in cells number in the inflammatory infiltrate in the group with a longer interval between surgery and pre op radiation (p<0.05). The collagen concentration had no significant variance. CONCLUSION: The irradiation in divided doses increased local inflammatory cellularity when the surgery was performed later. This result did not affect the increase of complications, nor on the local concentration of collagen, achieving similar clinical outcomes.
- ItemSomente MetadadadosModelo de treinamento em técnicas microcirúrgicas da Unifesp(Universidade Federal de São Paulo (UNIFESP), 2020-11-27) Feitosa, Roney Goncalves Fechine [UNIFESP]; Garcia, Elvio Bueno [UNIFESP]; Universidade Federal de São PauloIntroduction: Microsurgery is a fundamental technique in reconstructive plastic surgery for complex treatments involving free tissue transfer. Their training involves years, and the financial and ethical costs should not be neglected. The training model is an important tool in the training of surgical techniques, in addition to having an important social impact, as the professional will perfect the techniques and improve the intervention in the human being. Objective: To develop a non-animal, portable, low cost and effective microsurgery training model. Method: A device for training microsurgical techniques was devised. The device has been classified by the International Patent Classification. Bibliographic research was carried out using the Health Sciences Descriptors (DeCS): Microsurgery, Simulation Training, Device, Suture Techniques and Surgical Anastomosis. The search for anteriority was done using patent banks. Design Thinking was used to develop prototypes to validate the concepts and functionality of the device. Results: Thirteen devices with similarities to the device under study were found in patent banks. None of these devices showed great similarities with the device under study, to the point of making the grant of the patent unfeasible. Conclusion: A synthetic, non-animal training device was developed in microsurgical techniques.
- ItemAcesso aberto (Open Access)Técnicas de sutura do tubo digestivo em plano único com nós atados no lume, em cães: pontos simples totais versus pontos extramucosos(Sociedade Brasileira para o Desenvolvimento da Pesquisa em Cirurgia, 2005-04-01) Azevedo, João Luiz Moreira Coutinho [UNIFESP]; Silva, Cássio Edvan Paulino Da [UNIFESP]; Azevedo, Otávio Cansanção [UNIFESP]; Simões, Manuel de Jesus [UNIFESP]; Universidade Federal de São Paulo (UNIFESP); Hospital do Servidor Público do Estado de São PauloOBJECTIVE: To compare hand sewn digestive tract single layer anastomosis with knots tied in the lumen: total stitches versus serosubmucosal. METHODS: Six mongrel dogs were submitted to laparotomy, each one with two transversal jejunum sections, 30 and 70 cm far from Treizt angle and suture, serosubmucosal and total stitches, both with knots tied in the lumen, over the mucosa, at the posterior wall. After slaughter (7th post-operative day) was evaluated the peritoneal adhesions at posterior wall. The macro and microscopic features was observed. Wilcox on rank sum test was applied for the histhometry. RESULTS: More profuse adhesions with the serosubmucosal stitches tied in the lumen with adherence tissue over the suture line, avoiding the serosa, within or without healing deformation of the suture lines, doing an anastomosis´angle. There was good serosa reconstitution with total stitches. The epithelium was perfectly reconstituted at serosubmucosa, but not at total stitches, where was residual focus of acute inflammation. The reline and regeneration of wall components (except the serosa, whose regeneration was impaired by peritoneal adherences) were better with serosubmucosal then total stitches. The muscularis never regeneration in anyone suture. The polimorphonuclear cells, macrophages, fibroblasts, and collagen fibers was more numerous (statistical significance) at total stitches. COCLUSION: Total stitches with knots tied in the lumen, at posterior wall, over the mucosa are safe full, despite of major inflammation. Serosubmucosal with knots tied in the lumen, at posterior wall, over the mucosa, allows peritoneal adherences formation, and should be avoided.
- ItemSomente MetadadadosTelescopic straight ileo-anal anastomosis in dogs(Acta Cirurgica Brasileira, 2011-09-01) Lupinacci, Renato Arioni [UNIFESP]; Lupinacci, Renato Micelli; Zavadinack Netto, Martin [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)PURPOSE: To study outcomes and functional results of a telescopic straight ileo-anal anastomosis.METHODS: Thirty-six mongrel dogs were submitted to total proctocolectomy and telescopic straight ileo-anal anastomosis (ileal mucosa-submucosa pulled-through the rectal cuff). They were divided in 3 groups, sacrificed after one, two or eight weeks after the initial procedure. Gross and microscopic (degree of cooptation and signs of ischemia) aspects of the anastomosis, as well, the aspect of defecation were analyzed.RESULTS: On microscopy all anastomosis analysed showed a continuous epithelial line and were considered good. After two-months no signs of ischemia were identified. Defecation aspect has considerably changed during the study, so no dogs presented solid defecation within the first two weeks, whereas 80% of dogs presented solid stools after two months.CONCLUSION: Telescopic ileo-anal anastomosis is a safe alternative and may provide good functional results after some small period of time.