Plasma rico em plaquetas empregado na cirurgia reconstrutiva em coelhos (Oryctolagus cuniculus): avaliação da exequibilidade da técnica, achados macroscópicos e histopatológicos

• Autor(a) principal: Pazzini, Josiane Morais [UNESP]
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/110437
• topic: Coelho; Cirurgia veterinaria; Neovascularização; Ferimentos e lesões; Plasma Rico em Plaquetas; Platelet-Rich Plasma

Wounds of large tracts with loss of tissue viability and delayed healing by secondary intention are cases where it is necessary the use of reconstructive surgical techniques. The platelet rich plasma (PRP) is a product with a higher platelet concentration, adjuvant in the healing process of reconstructive surgeries, assisting in the processes of hemostasis and stimulation of angiogenesis. Thus, a study was devised to assess the efficacy of the gel produced from the platelet rich plasma (PRP) in the forward axial flaps thoracodorsal pattern in rabbits to evaluate the ability to promote the integration of the flap the recipient bed. We used 30 white rabbits New Zealand, separated into two groups of 15 animals, comprising the platelet rich plasma groups (GPRP), in which we used the gel before the synthesis of the surgical wound , and control (CG), in which only saline was used. To obtain the PRP, the blood was collected from the animals, was determined and the platelet count before preparation of the gel. At the beginning and end of the experiment the animals were weighed for analysis of average weight gain. After surgery began macroscopic in the 3rd, 7th and 14th day reviews, and we assessed the presence or absence of exudate, skin integrity, edema, redness and necrosis. After this step, yielded the material for the manufacture of surgical wound, followed by microscopic histological slides. We evaluated vascular proliferation, presence of polymorphonuclear and mononuclear cells, fibroblast proliferation, collagen deposition, reepithelialization and hemorrhage. The data were subjected to statistical analysis (Student t test, t paired, and Kruskal Wallis test, and p<0.05). The average weight gain was not significant between the groups; platelet concentration in the final sample of PRP was significantly higher when compared with the original; exudate and necrosis were significantly higher in the ...