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1.
J Surg Oncol ; 124(4): 665-668, 2021 Sep.
Article in English | MEDLINE | ID: mdl-34159613

ABSTRACT

Resection of the inferior vena cava may be required in the courses of oncological surgeries for the tumors originating from or invading it. Management of the remaining defect depends on the extension of the resection. Partial or complete replacement of the inferior vena cava, with a patch or interposition graft, may be required. Standard techniques for the reconstruction with a prosthetic material or the autologous veins can be associated with the prosthetic graft infection, high cost, long-standing anticoagulation, technical difficulties, and/or need for extra incisions. The use of the autologous peritoneum represents an easy and inexpensive alternative for the partial and complete inferior vena cava reconstructions.


Subject(s)
Neoplasms/surgery , Peritoneum/transplantation , Plastic Surgery Procedures/methods , Vena Cava, Inferior/surgery , Humans , Prognosis , Transplantation, Autologous
2.
Arq. bras. med. vet. zootec. (Online) ; 72(2): 323-331, Mar./Apr. 2020. ilus, tab
Article in Portuguese | VETINDEX | ID: vti-29647

ABSTRACT

A túnica vaginal possui características ideais para enxertia e já foi empregada na reparação de diversos tecidos, inclusive do diafragma pélvico. Objetivou-se avaliar a aplicabilidade da túnica vaginal como enxerto autógeno livre, em dupla camada, para a reparação do diafragma pélvico em 14 cães portadores de hérnia perineal, das quais, nove eram unilaterais e cinco, bilaterais. Após a orquiectomia, as túnicas de ambos os testículos foram coletadas, sobrepostas e fixadas entre si por meio de quatro pontos de reparo. Foi realizada abordagem ao saco herniário, inspeção, redução do conteúdo herniário, desbridamento muscular e síntese primária mediante sutura. O enxerto foi fixado à musculatura remanescente por meio de pontos simples separados e, posteriormente, encoberto pela sutura intradérmica e por síntese cutânea. Observações transoperatórias e, posteriormente, avaliações clínicas e ultrassonográficas, por período de um ano, permitiram sugerir que a túnica vaginal possui atributos ideais para a reparação do diafragma pélvico. Conclui-se que o enxerto autógeno livre de túnica vaginal, em dupla camada, é exequível e aplicável para o reparo do diafragma pélvico no tratamento da hérnia perineal em cães.(AU)


The tunica vaginalis has ideal characteristics for grafting and has already been used to repair several tissues, including the pelvic diaphragm. The aim of this study was to evaluate the applicability of the tunica vaginalis as a free double-layer autogenous graft to repair the pelvic diaphragm in 14 dogs with perineal hernia, of which, nine were unilateral and five, bilateral. After orchiectomy, the tunics of both testicles were collected, overlapped and fixed to each other by four repair points. The hernial sac was approached, followed by inspection, reduction of the hernia content, muscle debridement and primary synthesis through suture. The graft was attached to the remaining musculature by simple interrupted stitches and later hidden by intradermal suture and cutaneous synthesis. Intraoperative observations and, later, clinical and sonographic evaluations over a one-year period, allow to suggest that the tunica vaginalis has ideal attributes for the pelvic diaphragm repair. It is concluded that the autogenous graft-free of tunica vaginalis in double layer is feasible and applicable in order to repair the pelvic diaphragm in the perineal hernia treatment in dogs.(AU)


Subject(s)
Animals , Dogs , Peritoneum/transplantation , Pelvic Floor/surgery , Hernia/veterinary , Herniorrhaphy/veterinary
3.
Arq. bras. med. vet. zootec. (Online) ; 72(2): 323-331, Mar./Apr. 2020. ilus, tab
Article in Portuguese | LILACS, VETINDEX | ID: biblio-1128176

ABSTRACT

A túnica vaginal possui características ideais para enxertia e já foi empregada na reparação de diversos tecidos, inclusive do diafragma pélvico. Objetivou-se avaliar a aplicabilidade da túnica vaginal como enxerto autógeno livre, em dupla camada, para a reparação do diafragma pélvico em 14 cães portadores de hérnia perineal, das quais, nove eram unilaterais e cinco, bilaterais. Após a orquiectomia, as túnicas de ambos os testículos foram coletadas, sobrepostas e fixadas entre si por meio de quatro pontos de reparo. Foi realizada abordagem ao saco herniário, inspeção, redução do conteúdo herniário, desbridamento muscular e síntese primária mediante sutura. O enxerto foi fixado à musculatura remanescente por meio de pontos simples separados e, posteriormente, encoberto pela sutura intradérmica e por síntese cutânea. Observações transoperatórias e, posteriormente, avaliações clínicas e ultrassonográficas, por período de um ano, permitiram sugerir que a túnica vaginal possui atributos ideais para a reparação do diafragma pélvico. Conclui-se que o enxerto autógeno livre de túnica vaginal, em dupla camada, é exequível e aplicável para o reparo do diafragma pélvico no tratamento da hérnia perineal em cães.(AU)


The tunica vaginalis has ideal characteristics for grafting and has already been used to repair several tissues, including the pelvic diaphragm. The aim of this study was to evaluate the applicability of the tunica vaginalis as a free double-layer autogenous graft to repair the pelvic diaphragm in 14 dogs with perineal hernia, of which, nine were unilateral and five, bilateral. After orchiectomy, the tunics of both testicles were collected, overlapped and fixed to each other by four repair points. The hernial sac was approached, followed by inspection, reduction of the hernia content, muscle debridement and primary synthesis through suture. The graft was attached to the remaining musculature by simple interrupted stitches and later hidden by intradermal suture and cutaneous synthesis. Intraoperative observations and, later, clinical and sonographic evaluations over a one-year period, allow to suggest that the tunica vaginalis has ideal attributes for the pelvic diaphragm repair. It is concluded that the autogenous graft-free of tunica vaginalis in double layer is feasible and applicable in order to repair the pelvic diaphragm in the perineal hernia treatment in dogs.(AU)


Subject(s)
Animals , Dogs , Peritoneum/transplantation , Pelvic Floor/surgery , Hernia/veterinary , Herniorrhaphy/veterinary
4.
Arq Bras Cir Dig ; 32(1): e1418, 2019 Feb 07.
Article in English, Portuguese | MEDLINE | ID: mdl-30758466

ABSTRACT

BACKGROUND: Duodenal injuries and their surgical procedure cause a high morbidity and mortality. AIM: To assess the overall effectiveness of the auto-graft of peritoneum in the treatment of the perforation of the duodenum, aiming to reduce surgery time, costs, complexity and mortality. METHODS: Twelve New Zealand rabbits, ages 4-6 months, both sexes, underwent designed surgical grade III duodenal injuries that were repaired 18 h after. Rabbits were surgically treated with the proposed auto-graft of peritoneum. RESULTS: No postoperative deaths were observed; the animals presented corporal weight increase and were euthanized six months later. There was no significant difference between both groups relating to the postoperative evolution or in the histological changes. CONCLUSION: Auto-graft of the peritoneum and posterior fascia is a useful option for duodenal repair and that is worth of evaluation for humans.


Subject(s)
Duodenum/injuries , Duodenum/surgery , Peritoneum/transplantation , Animals , Disease Models, Animal , Female , Male , Operative Time , Rabbits , Transplantation, Autologous
5.
ABCD (São Paulo, Impr.) ; 32(1): e1418, 2019. tab, graf
Article in English | LILACS | ID: biblio-983667

ABSTRACT

ABSTRACT Background: Duodenal injuries and their surgical procedure cause a high morbidity and mortality. Aim: To assess the overall effectiveness of the auto-graft of peritoneum in the treatment of the perforation of the duodenum, aiming to reduce surgery time, costs, complexity and mortality. Methods: Twelve New Zealand rabbits, ages 4-6 months, both sexes, underwent designed surgical grade III duodenal injuries that were repaired 18 h after. Rabbits were surgically treated with the proposed auto-graft of peritoneum. Results: No postoperative deaths were observed; the animals presented corporal weight increase and were euthanized six months later. There was no significant difference between both groups relating to the postoperative evolution or in the histological changes. Conclusion: Auto-graft of the peritoneum and posterior fascia is a useful option for duodenal repair and that is worth of evaluation for humans.


RESUMO Racional: Lesões duodenais e seu procedimento cirúrgico causam alta morbimortalidade. Objetivo: Avaliar a eficácia geral de retalho peritoneal no tratamento da perfuração do duodeno, visando reduzir o tempo, os custos, a complexidade e a mortalidade cirúrgicas. Métodos: Doze coelhos da raça Nova Zelândia, com idades entre 4-6 meses, ambos os sexos, foram submetidos a lesões duodenais cirúrgicas de grau III, que foram reparadas 18 h depois. Coelhos foram tratados cirurgicamente com a proposta de auto-enxerto de peritônio. Resultados: Não foram observados óbitos pós-operatórios; os animais apresentaram aumento de peso corporal e foram eutanasiados seis meses depois. Não houve diferença significativa entre os dois grupos em relação à evolução pós-operatória ou nas alterações histológicas. Conclusão: A auto-enxertia do peritônio e da fáscia posterior é uma opção útil para o reparo duodenal e vale a pena ser avaliada em seres humanos.


Subject(s)
Animals , Male , Female , Rabbits , Peritoneum/transplantation , Duodenum/surgery , Duodenum/injuries , Transplantation, Autologous , Disease Models, Animal , Operative Time
6.
Arq. bras. med. vet. zootec ; 62(2): 324-331, abr. 2010. ilus
Article in Portuguese | VETINDEX | ID: vti-5792

ABSTRACT

Avaliou-se o efeito da eletroacupuntura (EA) sobre os aspectos macroscópicos e microscópicos em 36 coelhos que tiveram o tendão calcanear comum seccionado e que, após 30 dias, receberam enxerto de peritônio bovino conservado em solução saturada de sal. Após a cirurgia, os animais foram distribuídos em três grupos de igual número: os do grupo E10 foram estimulados pela EA do segundo ao 11º dia de pós-operatório, os do grupo E20 do 11º ao 31º dia de pós-operatório e os do grupo C não foram estimulados. Posteriormente, os animais foram redistribuídos em três subgrupos de igual número, os quais foram observados no pós-operatório por 11, 31 e 91 dias. Nos coelhos do E10 e E20, ocorreu diminuição de aderência da área enxertada aos tecidos circunvizinhos. Aos 31 dias de pós-operatório, observou-se nos do E10 tecido conjuntivo. Verificou-se intensa neovascularização no local enxertado em todos os animais que receberam estímulo pela EA. Nos coelhos do E10, aos 91 dias, verificou-se intensa quantidade de tecido conjuntivo, com fibras colágenas organizadas e paralelas ao eixo do tendão. O estímulo pela EA na fase precoce do pós-operatório estimulou a maturação cicatricial com mínima reação inflamatória.(AU)


The effects of eletro-acupuncture (EA) were evaluated on clinical and histological aspects in 36 rabbits that had the acchiles tendon sectioned and grafted after 30 days using bovine peritoneum graft preserved in saturated salt solution. The animals were randomly distributed into three groups. They were stimulated by EA from the 2nd to the 11th post-operative day (S10 group), from the 11th to the 31st post-operative day (S20 group), and were not stimulated (C group). Then, the rabbits were distributed into three sub-groups and were observed for 11, 31, and 91 days. The rabbits from S10 and S20 groups presented decreased adhesions between graft and adjacent tissues. The rabbits from S10 group showed connective tissue at 31 days of the post-operative period. Intense graft neovascularization was observed in all animals stimulated by EA. Large amounts of connective tissue with organized and parallel to the tendon axis collagen fibers were detected on the day 91st in the S10 group animals. The early EA stimulation during the post-operative period stimulated the tendon healing with minimal inflammatory reaction.(AU)


Subject(s)
Male , Female , Adult , Rabbits , Achilles Tendon/blood supply , Achilles Tendon/surgery , Achilles Tendon/transplantation , Electroacupuncture/methods , Electroacupuncture/trends , Electroacupuncture/veterinary , Peritoneum/transplantation , Rabbits/surgery
7.
Arq. bras. med. vet. zootec ; Arq. bras. med. vet. zootec. (Online);62(2): 324-331, abr. 2010. ilus
Article in Portuguese | LILACS | ID: lil-551833

ABSTRACT

Avaliou-se o efeito da eletroacupuntura (EA) sobre os aspectos macroscópicos e microscópicos em 36 coelhos que tiveram o tendão calcanear comum seccionado e que, após 30 dias, receberam enxerto de peritônio bovino conservado em solução saturada de sal. Após a cirurgia, os animais foram distribuídos em três grupos de igual número: os do grupo E10 foram estimulados pela EA do segundo ao 11º dia de pós-operatório, os do grupo E20 do 11º ao 31º dia de pós-operatório e os do grupo C não foram estimulados. Posteriormente, os animais foram redistribuídos em três subgrupos de igual número, os quais foram observados no pós-operatório por 11, 31 e 91 dias. Nos coelhos do E10 e E20, ocorreu diminuição de aderência da área enxertada aos tecidos circunvizinhos. Aos 31 dias de pós-operatório, observou-se nos do E10 tecido conjuntivo. Verificou-se intensa neovascularização no local enxertado em todos os animais que receberam estímulo pela EA. Nos coelhos do E10, aos 91 dias, verificou-se intensa quantidade de tecido conjuntivo, com fibras colágenas organizadas e paralelas ao eixo do tendão. O estímulo pela EA na fase precoce do pós-operatório estimulou a maturação cicatricial com mínima reação inflamatória.


The effects of eletro-acupuncture (EA) were evaluated on clinical and histological aspects in 36 rabbits that had the acchiles tendon sectioned and grafted after 30 days using bovine peritoneum graft preserved in saturated salt solution. The animals were randomly distributed into three groups. They were stimulated by EA from the 2nd to the 11th post-operative day (S10 group), from the 11th to the 31st post-operative day (S20 group), and were not stimulated (C group). Then, the rabbits were distributed into three sub-groups and were observed for 11, 31, and 91 days. The rabbits from S10 and S20 groups presented decreased adhesions between graft and adjacent tissues. The rabbits from S10 group showed connective tissue at 31 days of the post-operative period. Intense graft neovascularization was observed in all animals stimulated by EA. Large amounts of connective tissue with organized and parallel to the tendon axis collagen fibers were detected on the day 91st in the S10 group animals. The early EA stimulation during the post-operative period stimulated the tendon healing with minimal inflammatory reaction.


Subject(s)
Male , Female , Adult , Rabbits , Electroacupuncture/methods , Electroacupuncture/trends , Electroacupuncture/veterinary , Peritoneum/transplantation , Achilles Tendon/surgery , Achilles Tendon/blood supply , Achilles Tendon/transplantation , Rabbits/surgery
8.
Cir Cir ; 76(3): 235-9, 2008.
Article in Spanish | MEDLINE | ID: mdl-18647557

ABSTRACT

BACKGROUND: Vascular autografts are commonly used to repair damage to blood vessels; however, they can be used only with small-caliber vessels. Although synthetic vascular grafts are good options, there may be a high likelihood of thrombus formation. METHODS: An experimental animal model was used in order to evaluate feasibility and viability of a vascular autograft. Under inhalatory anesthesia, seven mongrel dogs were operated on. A 4-cm vascular autograft was created with the posterior rectus aponeurosis with subjacent peritoneum, leaving the second one as the internal sheath. A 2-cm-long portion of the abdominal aorta was removed and the vascular autograft was inserted by end-end surgical anastomosis. Animals were observed for 7 weeks, evaluating clinical data of vascular insufficiency (intensity of pulse, temperature and trophic changes of the legs). At the end of the experiment, aortography under fluoroscopic visualization was performed. Dogs were sacrificed and autograft removed in order to evaluate permeability. RESULTS: All dogs survived until the end of the procedure. Vascular autograft was easy to create. During surgery, no evidence of bleeding of the anastomosis or the graft suture was noted. At the end of the procedure, no clinical signs of vascular insufficiency were noted; radiographic evaluation of the autograft showed no dye leakage at any level. Autografts were removed and no signs of thrombus formation were noticed. CONCLUSIONS: Feasibility of the vascular autograft was demonstrated with good permeability and no thrombogenicity.


Subject(s)
Aorta, Abdominal/surgery , Connective Tissue/transplantation , Peritoneum/transplantation , Animals , Dogs , Feasibility Studies , Vascular Surgical Procedures/methods
9.
Cir. & cir ; Cir. & cir;76(3): 235-239, mayo-jun. 2008. ilus
Article in Spanish | LILACS | ID: lil-567103

ABSTRACT

BACKGROUND: Vascular autografts are commonly used to repair damage to blood vessels; however, they can be used only with small-caliber vessels. Although synthetic vascular grafts are good options, there may be a high likelihood of thrombus formation. METHODS: An experimental animal model was used in order to evaluate feasibility and viability of a vascular autograft. Under inhalatory anesthesia, seven mongrel dogs were operated on. A 4-cm vascular autograft was created with the posterior rectus aponeurosis with subjacent peritoneum, leaving the second one as the internal sheath. A 2-cm-long portion of the abdominal aorta was removed and the vascular autograft was inserted by end-end surgical anastomosis. Animals were observed for 7 weeks, evaluating clinical data of vascular insufficiency (intensity of pulse, temperature and trophic changes of the legs). At the end of the experiment, aortography under fluoroscopic visualization was performed. Dogs were sacrificed and autograft removed in order to evaluate permeability. RESULTS: All dogs survived until the end of the procedure. Vascular autograft was easy to create. During surgery, no evidence of bleeding of the anastomosis or the graft suture was noted. At the end of the procedure, no clinical signs of vascular insufficiency were noted; radiographic evaluation of the autograft showed no dye leakage at any level. Autografts were removed and no signs of thrombus formation were noticed. CONCLUSIONS: Feasibility of the vascular autograft was demonstrated with good permeability and no thrombogenicity.


Subject(s)
Animals , Dogs , Aorta, Abdominal/surgery , Peritoneum/transplantation , Connective Tissue/transplantation , Feasibility Studies , Vascular Surgical Procedures/methods
10.
Int. j. morphol ; 26(2): 269-274, jun. 2008. ilus
Article in English | LILACS | ID: lil-549945

ABSTRACT

The present study aimed to experimentally evaluate the protection role of glycerin preserved bovine peritoneum (BP) against intestinal adhesions to a vascular graft. Experiments were performed on 24 adult rabbits, randomly dived into two groups. All animals were submitted to a vascular graft over the infra-renal aorta and vena cava. Group 1(12 animals ) was submitted to a BP patch on the retroperitoneal opening, between the vascular prosthetic graft and the intestinal loops. Group II (12 animals ) had the retroperitoneal opening sutured. After 7, 14, 28 and 60 days, 3 animals of each group were randomly killed and the retro peritoneum, with or without the BPpatch, was removed for histological analysis. The histological analysis showed that the BP stimulated a moderate to intense inflammatory reaction at the beginning of the experiments and on the 60-day evaluation, the inflammatory reaction was mild, limited to the BP border with its histological structure preserved. In conclusion, the BP is a safe and cheap interposition material to be used between vascular grafts and intestinal loops, presenting a protection role against adhesions between them.


El objetivo de este estudio fue evaluar experimentalmente el rol protector del peritoneo bovino (PB) preservado en la glicerina en contra de las adherencias intestinales de un injerto vascular. Los experimentos se realizaron en 24 conejos adultos, randomizados aleatoriamente en dos grupos. Todos los animales fueron sometidos a un injerto vascular sobre la aorta infra-renal y la vena cava. Grupo I (12 animales), fue sometido a un parche PB en una apertura retroperitoneal suturada, entre el injerto vascular y el intestino. Grupo II (12 animales) con la apertura retroperitoneal suturada. Después de 7, 14, 28 y 60 días, 3 animales de cada grupo fueron sacrificados al azar y el retro peritoneo, con o sin el parche de PB, se retiró para el análisis histológico. El análisis histológico mostró que la PB estimuló una moderada a intensa reacción inflamatoria al inicio de los experimentos y en la evaluación de 60 días, la reacción inflamatoria fue leve, limitada a los bordes de la PB con su estructura histológica preservada. En conclusión, la PB es una forma segura y barata de material de interposición para ser utilizada entre injertos vasculares e intestinales, presentando un rol de protección contra adherencias entre ellos.


Subject(s)
Cattle , Animals , Rabbits , Blood Vessel Prosthesis , Aortic Diseases/surgery , Aortic Diseases/pathology , Vascular Fistula/surgery , Vascular Fistula/pathology , Peritoneum/transplantation , Bioprosthesis , Postoperative Complications/prevention & control , Intestinal Diseases/prevention & control , Time Factors , Tissue Preservation
11.
Fertil Steril ; 90(3): 827-32, 2008 Sep.
Article in English | MEDLINE | ID: mdl-18001716

ABSTRACT

OBJECTIVE: To evaluate the surgical feasibility and the long-term anatomical and functional results of the technique of vaginal reconstruction using peritoneum from the pouch of Douglas in patients with uterovaginal agenesis, known as Rokitansky's syndrome. DESIGN: Retrospective single-institution case series. SETTING: A tertiary referral center for the treatment of female genital malformations. PATIENT(S): Forty-eight patients with vaginal agenesis. INTERVENTION(S): Laparotomy and use of pelvic peritoneum to form a neovagina. MAIN OUTCOME MEASURE(S): Anatomical success was defined as a neovagina > or =8 cm in length that easily permitted the insertion of two fingers 6 months after corrective surgery. Functional success was considered to have been achieved when the patient reported satisfactory sexual intercourse beginning 6 months after surgery. RESULT(S): The surgical procedure was carried out uneventfully, and anatomical success was achieved in 100% of cases. Functional success was also achieved in the entire population studied. CONCLUSION(S): The construction of a neovagina using pelvic peritoneum is simple, safe, and effective in patients with Rokitansky syndrome.


Subject(s)
Gynecologic Surgical Procedures/methods , Peritoneum/transplantation , Plastic Surgery Procedures/methods , Sexual Dysfunction, Physiological/surgery , Vagina/abnormalities , Vagina/surgery , Adolescent , Adult , Female , Gynecologic Surgical Procedures/instrumentation , Humans , Plastic Surgery Procedures/instrumentation , Retrospective Studies , Syndrome , Treatment Outcome
12.
Acta Cir Bras ; 21(5): 328-31, 2006.
Article in English | MEDLINE | ID: mdl-16981037

ABSTRACT

PURPOSE: To assess the role of preserved bovine parietal peritoneum as a material for hernia repair in a rat ventral hernia model. METHODS: An abdominal wall defect (15mm x 25mm) was created in Wistar male rats (n=40). Control animals (n=20) had the polypropylene (PP) mesh sutured into the defect, whereas bovine preserved peritoneum (BPP) was used in experimental group (n=20). After 7 and 28 days, the abdominal wall was taken off and histological studies of the amount of collagen by Sirius Red stain and morphometric evaluation consisted in quantitative analysis of the collagen by using specific software (Imagelab). The Mann-Whitney, Kruskal-Wallis and ANOVA tests were applied for statistical analysis (pd"0.05). RESULTS: Histological examination revealed no difference between the BPP and PP groups (p = 0.55 NS). CONCLUSION: BPP is suitable for the closure of ventral hernias in rat model as shown by its morphological properties.


Subject(s)
Abdominal Wall/pathology , Biocompatible Materials/standards , Hernia, Ventral/surgery , Peritoneum/pathology , Polypropylenes , Surgical Mesh , Abdominal Wall/surgery , Analysis of Variance , Animals , Body Weight , Cattle , Collagen/analysis , Disease Models, Animal , Graft Rejection , Hernia, Ventral/pathology , Male , Materials Testing , Peritoneum/transplantation , Rats , Rats, Wistar , Statistics, Nonparametric
13.
Acta Cir Bras ; 20(1): 88-92, 2005.
Article in Portuguese | MEDLINE | ID: mdl-15810469

ABSTRACT

PURPOSE: To study the fragment of the autologous tissue, built by a peritoneum-fascia-muscle, implanted on the level of the wall of inguinal canal and the spermatic cord of rats aiming to verify the histological behavior of the survive and the tissue incorporation. METHODS: Thirty-six rats were distributed into four groups. The rats of the group A, B, C and D were submitted to the median laparotomy to obtain the species to be implanted. On the group A, was implanted a tissue compounded by peritoneum and transversal fascia on the wall of the inguinal canal. On the B, the tissue implanted was added a part of rectum muscle of the abdomen and implanted on the wall of the inguinal canal. On the C, the tissue grafted was similar to the groupA, now grafted into the spermatic cord. On the D, the tissue was similar to the group B, now grafted into the spermatic cord. RESULTS: After 21 days of implant, these tissues presented the following histological alteration: the group A and C, fibroadipous tissue with dilated vessel, Focus of fibrosis' and limphoplasmocitary infiltrated and the groups B and D, fibroadipous tissue with dilated vessels, skeletal muscle and focus of fibrosis. The fibrosis displayed on the groups B and D was more intensive. On the group B, we almost always find the skeletal muscle, while on the group D this tissue was presented in six animals, almost replaced by fibrosis in two and not present in one. CONCLUSION: All the implanted grafts displayed survive and local incorporation, what could be useful on the correction of defects on the inguinal canal, on situations when the autologous tissue was indicated.


Subject(s)
Fascia/transplantation , Inguinal Canal/surgery , Muscle, Skeletal/transplantation , Peritoneum/transplantation , Animals , Inguinal Canal/pathology , Rats , Rats, Sprague-Dawley
14.
Acta cir. bras ; Acta cir. bras;20(1): 88-92, jan.-fev. 2005. ilus
Article in Portuguese | LILACS | ID: lil-394247

ABSTRACT

OBJETIVO: Estudar um fragmento de tecido autólogo, constituído por peritônio-fáscia-músculo, implantado no nível da parede do canal inguinal e no funículo espermático de ratos a fim de verificar o comportamento histológico da pega e da integração tecidual. MÉTODOS: Trinta e seis ratos foram distribuídos em quatro grupos. Os ratos do grupo A, B, C e D foram submetidos a laparotomia mediana para obtenção dos espécimes a serem implantados. No grupo A, foi implantado tecido composto por peritônio e fáscia transversal na parede do canal inguinal. No B, o tecido implantado era acrescido de parte do músculo reto do abdome e implantado na parede do canal inguinal. No C, o tecido enxertado era semelhante ao do grupo A, agora enxertado no funículo espermático. No D, o tecido enxertado era semelhante ao grupo B, agora enxertado no funículo espermático. RESULTADOS: Após 21 dias de implante estes tecidos apresentavam histologicamente as seguintes alterações: os grupos A e C, tecido fibroadiposo com vasos dilatados, focos de fibrose e infiltrado linfoplasmocitário e os grupos B e D, tecido fibroadiposo com vasos dilatados, musculatura esquelética e focos de fibrose. A fibrose mostrou-se mais intensa nos grupos B e D. No grupo B, sempre encontramos o músculo esquelético, enquanto no grupo D este tecido estava presente em seis animais, quase que totalmente substituído por tecido fibroso em dois e ausente em um. CONCLUSAO: Todos os tecidos implantados sobreviveram e incorporaram-se no local, podendo ser útil na correção de defeitos do canal inguinal, nas situações em que o tecido autólogo estiver indicado.


Subject(s)
Animals , Rats , Inguinal Canal/surgery , Fascia/transplantation , Muscle, Skeletal/transplantation , Peritoneum/transplantation , Inguinal Canal/pathology , Rats, Sprague-Dawley
16.
Ciênc. rural ; Ciênc. rural (Online);29(4): 697-703, out.-dez. 1999. ilus
Article in Portuguese | LILACS | ID: lil-255024

ABSTRACT

No presente estudo, avaliou-se a eficácia do emprego do peritônio bovino, conservado em glicerina a 98 por cento, no reparo de lesöes induzidas no tendäo calcâneo (TC) de cäes, quando um fragmento de aproximadamente 1cm do TC foi excisado e o espaço resultante preenchido por um fragmento de peritônio. Foram utilizados 21 cäes, pesando entre 10 e 15kg, divididos em 7 grupos de 3, sacrificados aos 02, 07, 15, 30, 60, 90 e 120 dias de pós-operatório. Analisaram-se os aspectos clínico-cirúrgicos referentes à recuperaçäo funcional motora, bem como, a integraçäo do peritônio com o tecido tendíneo mediante avaliaçäo macroscópica, por microscopia óptica e por microscopia eletrônica de varredura. Clinicamente, verificou-se que, por volta do 55§ dia de pós-operatório, os animais já apresentavam deambulaçäo normal e que o "neotendäo" apresentou resistência suficiente para suportar o estresse normalmente aplicado ao TC. Microscopicamente, o peritônio implantado esteve presente em todos os períodos de observaçäo. Proliferaçäo fibroblástica e neoformaçäo vascular foram observadas de forma incipiente no segundo dia; entretanto, no sétimo dia de pós-operatório, esta condiçäo foi exacerbada. Com a evoluçäo, as fibras de peritônio tendiam a se dissociar, entrando em estreita associaçäo com fibras conjuntivas, fibroblastos e colágeno. Aos 30, 60, 90, e 120 dias de pós-operatório, notava-se maior presença de colágeno que se tornava cada vez mais organizado. Conclui-se que o peritônio estimulou uma rápida deposiçäo de tecido conjuntivo com mínima reaçäo inflamatória, sendo incorporado ao tecido cicatricial e servindo como alicerce para o desenvolvimento de um novo tecido, restabelecendo assim a estrutura do tendäo.


Subject(s)
Animals , Cattle , Cryoprotective Agents , Glycerol , Implants, Experimental/veterinary , Peritoneum/transplantation , Tendons/transplantation , Tendon Injuries/surgery , Tendon Injuries/veterinary , Dogs/surgery , Dogs/injuries
17.
Rev. mex. angiol ; 26(2): 49-51, abr.-jun. 1998. ilus
Article in Spanish | LILACS | ID: lil-248403

ABSTRACT

Presentamos un caso de un hombre de 36 años de edad, con lesión intestinal y de la vena cava inferior infrarrenal por un proyectil de arma de fuego, tratada con un injerto de peritoneo parietal


Subject(s)
Humans , Male , Adult , Peritoneum/transplantation , Vena Cava, Inferior/injuries , Firearms , Transplantation, Autologous , Tissue Transplantation/methods
18.
Acta cir. bras ; Acta cir. bras;9(4): 195-200, out.-dez. 1994. ilus
Article in Portuguese | LILACS | ID: lil-143516

ABSTRACT

Foi analisado a viabilidade da reparaçäo de defeitos provocados na traquéia cervical de cäes com segmento livre de peritônio-muscular. Foram utilizados 24 cäes, adultos, machos e fêmeas, sem raça definida com peso variando de 12 a 18 Kg. Os animais foram separados em quatro grupos iguais e submetidos a remoçäo de quatro anéis traqueais e o defeito foi reparado mediante fixaçäo de implante autólogo do peritônio-muscular. Os animais foram observados no pós-operatório (PO) por peróodos de tempo indeterminados. O grupo I foi observado até o 7§ dia de PO, grupo II até o 15§ PO, grupo III até 30§ PO e o grupo IV até o 60§ PO, quando foram reoperados para observaçöes macroscópicas e coleta de fragmentos para avaliaçäo histológica. A integraçäo do enxêrto com a traquéia foi boa mediante a formaçäo intensa de fibras colágenas e tecido conjuntivo fibroso, com migraçäo de tecido epitelial e estenose discreta. O enxerto peritônio-muscular é um tecido adequado para restauraçäo de defeitos provocados na traquéia de cäes


Subject(s)
Dogs , Animals , Male , Female , Peritoneum/transplantation , Surgical Flaps/methods , Trachea/surgery , Postoperative Period , Trachea/pathology
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