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Revista argentina de neurocirugía

versión On-line ISSN 1850-1532

Resumen

REQUEJO, Flavio et al. Aneurismas experimentales en ratas. Rev. argent. neurocir. [online]. 2009, vol.23, n.3. ISSN 1850-1532.

Objective. 1. The creation of an aneurysm model in an arterial bifurcation for microsurgical training in rats. 2. To verify angiographically the aneurysms patency performing endovascular maneuvers. Material and method. 10 Wistar rats weighted 400-600g were used. Ten aneurysms were performed, 9 in the final aortic bifurcation and one in the origin of the renal artery. The aneurismal sac derived from the external iliac vein. Angiography in each animal was done to examine aneurysm patency. At the same time we tried to manipulate microcateter and microguidewire in the aortic lumen. After that the aneurysm was microscopically inspected in order to verify the angiographic findings. Results. The aneurysms and the angiographic study could be performed in every animal. Four aortic and the renal artery aneurysms were not visualized in the angiography (totally thrombosed). The other five were partially thrombosed. Under microscopic aneurismal inspection could be found thrombus into the sac. The endovascular navigation was difficult due to the animal size. Conclusion. The bifurcation aneurysm model is a good microsurgical training. In our hands the aneurysms created had a high rate of spontaneous thrombosis. Because of animal size it is not a good model for endovascular training.

Palabras clave : Experimental aneurysm; Rat; Angiography; Microsurgery; Endovascular; Training.

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