Caracterización de la insuficiencia venosa crónica profunda por reflujo valvular

Objective: Among the veins used as a graft in myocardial revascularizations and ends, great saphenous vein is the most used. Knowing the presence and location of valves has great importance when evaluating the surgical anatomy of the great saphenous vein. Despite major surgical application and many works involving great saphenous vein, the number of valves present in it from the saphenous hiatus to the medial epicondyle of the femur is still described inaccurately. The objective of this study is to quantify the valves of the great saphenous vein from the saphenous hiatus to the medial epicondyle of the femur to determine the best portion of the great saphenous vein to perform revascularization surgeries. Methods: This is a crosssectional observational study in which it was analyzed great saphenous vein extracted from 30 cadavers. It was measured the length of the veins; (diameter) at its proximal, middle and distal, quantifying the number of valves in each one and the total number of valves at the great saphenous vein. Results: The frequency of valves in the great saphenous vein taken from the medial epicondyle of the femur to the saphenous hiatus was 4.82, ranging between 2 and 9. Moreover, there is a significant difference in the number of valves in the proximal and distal relative to the average. Conclusion: the median and distal portions of the saphenous vein in the thigh, are the best options for the realization of bridges due to the fact that these portions have fewer valves which therefore would tend to decrease the risk of complications connected with the valves in these grafts. . Objetivo: Dentre as veias empregadas para revascularizacoes do miocardio e de extremidades, a veia safena magna e a mais utilizada. Conhecer a presenca e localizacao de valvulas e de grande importância quando se avalia a anatomia cirurgica da veia safena magna. Apesar de grande aplicacao cirurgica e de muitos trabalhos envolvendo a veia safena magna, o numero de valvulas presente nela desde o hiato safeno ate o epicondilo medial do femur ainda e descrito de forma imprecisa. O objetivo do presente trabalho e quantificar as valvulas da veia safena magna desde o hiato safeno ate o epicondilo medial do femur para determinar a melhor porcao da veia safena magna para a realizacao de cirurgias de revascularizacao. Metodos: Este e um estudo transversal e observacional em que foram analisadas veias safena magna extraidas de 30 cadaveres. Foram realizadas as medidas das variaveis do comprimento das veias; (diâmetro) em suas porcoes proximal, media e distal; quantificacao do numero de valvulas nestas e numero de valvulas total na veia safena magna. Resultados: A frequencia de valvulas da veia safena contadas desde o epicondilo medial do femur ate o hiato safeno foi de 4,82, podendo variar entre 2 e 9. Alem disso, houve diferenca significante do numero de valvulas da porcao proximal em relacao a media e distal. Conclusao: As porcoes media e distal da veia safena magna na coxa sao as melhores opcoes para a realizacao de pontes em decorrencia do fato destas porcoes terem menor quantidade de valvulas o que, portanto, tenderia a diminuir o risco de complicacoes relacionadas as valvulas nestes enxertos. .