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ORIGINAL ARTICLE

Bovine tail artery as an alternative vascular graft: experimental study in dogs. (Preliminary report)

Mauro Barbosa Arruda FilhoI; Mauro Barbosa ArrudaI

DOI: 10.1590/S0102-76381996000400013

ABSTRACT

Twenty segments of bovine tail artery treated with glutaraldehyde were interposed into 10 dog's femoral arteries. The post-operative period varied from 183 to 297 days. Motor function, pulses, systolic, diastolic and median blood pressure and blood flow throught the graft, as well as consistence, dilatation and color in the follow-up period were analysed. There were no deaths, motorfunction or inflammatory changes. There were 15% of total thrombosis, focal wall thrombosis (30%), advential focal linfoplasmocitory reaction (100%), myocells calcification (15%), total reendotelization (60%) and partial (30%). Our data show that bovine tail artery has a diameter adequacy with small arteries, is long enough to replace or reach several distal arterial segments, has easy epitelization, and absence of cytological reation, allowding its use as an alternative graft.

RESUMO

Foram interpostos 20 segmentos de artéria caudal bovina (ACB), tratados com glutaraldeído e formaldeido, nas artérias femorais de 10 cães. O período de seguimento pós-operatório variou de 180 a 297 dias. Foram avaliados: função motora, pulsos (à palpação e ao ultra-sônar), variações das pressões arteriais sistólica, diastólica e média e fluxo através do enxerto, assim como consistência dilatação e coloração quando da retirada. Não houve óbitos, alterações da marcha ou processos inflamatórios nas feridas. Houve trombose total (15%), trombose mural focal (30%), reação linfoplasmocitária focal da adventícia (100%), calcificação unicamente das miocélulas (5%), reendotelização total (60%) e parcial (30%). Por apresentar adequação com diâmetro de pequenas artérias, ter comprimento suficiente para substituir ou atingir diversos segmentos de artérias distais, apresentar rápida endotelização, bem como ausência de rejeição, é demonstrada a receptividade ao uso da ACB como enxerto vascular alternativo.
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