Valoración de la lesión vascular tras la aplicación de métodos extraluminales de oclusión temporal

Abstract

IntroductionTemporary occlusion systems cause arterial wall injury. The aim of this study is to compare the arterial damage extraluminal methods of vascular occlusion (tangential and circumferential). Material and methodsA sample of 80 rats were subjected to occlusion of the common carotid artery for 60minutes. They were randomized into 8 groups: vascular clamp (CV) and vascular bulldog (BD) as tangential techniques, and Potts loop (LZ) and Rumel tourniquet (RM) as circumferential techniques. ResultsThe CV and RM treated groups had a higher average maximum medial thickness in the treated BD at 7 days (P<.05), whereas 15-day LZ-treated group had a higher average medial thickness than the measures in the CV group (P<.05). After 7 and 15 days, the arteries occluded by occlusion circumferential techniques showed a greater total wall thickening (P<.01). The groups treated with BD, RM and LZ showed greater vessel total wall thickness than the group treated with CV (P<.05). The RM-treated group also showed a greater total thickness than the BD and LZ groups (P<.05). At 7 days, arteries treated by tangential techniques showed a greater area of the luz than arteries treated by circumferential techniques (P<.05). ConclusionsTangential methods are less destructive methods of the artery wall structure than the circumferential methods, producing a minor disturbance in the thickness of the vessel wall and less luz stenosis.