RESUMO
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.
Assuntos
Bovinos , Animais , Coelhos , Prótese Vascular , Doenças da Aorta/cirurgia , Doenças da Aorta/patologia , Fístula Vascular/cirurgia , Fístula Vascular/patologia , Peritônio/transplante , Bioprótese , Complicações Pós-Operatórias/prevenção & controle , Enteropatias/prevenção & controle , Fatores de Tempo , Preservação de TecidoRESUMO
La hemangiomatosis neonatal difusa (HND) es una entidad que presenta hemangiomas miliares múltiples y con frecuencia puede tener compromiso visceral. Se presenta una paciente de tres meses de edad con hallazgos clínicos e histopatológicos típicos de una HND, en la cual se constató la presencia de un hemangioma hepático, con la muy infrecuente asociación de fístula portosistémica.
Assuntos
Humanos , Lactente , Feminino , Hemangioma/diagnóstico , Hemangioma/patologia , Pele/patologia , Fístula Vascular/patologia , Veias Hepáticas , Fígado/patologiaRESUMO
We report the case of a uretero-arterial fistula (UAF) formation in a 68 years old male who had previously undergone an Aortobifemoral graft. He got complicated with occlusion and infection of the right lower extremity requiring a right hip disarticulation for its management. This was followed by groin infection and graft protusion, managed by transabdominal resection of the right graft limb, at which time the right ureter was lacerated and repaired. Several months later, he presented with gross hematuria found to be secondary to UAF. The diagnostic and management steps leading to this patient care will be reviewed, together with a review of the literature pertinent to this case report