Objective:To consider modifications in an experimental model of saccular aortic aneurysm, aiming at better reproducibility, to be used in the development of vascular prostheses.Methods:Experimental study in two phases, developed in the Center of Experimental Surgery and Bioterium (CCEB) of the University of Health Sciences of Alagoas (UNCISAL), with 11 hybrid swine, female, mean weight of 20 ± 5 kg, according to modifications in the Perini technique was performed. In the first phase, the aneurysm was confectioned with bovine pericardial patch. In the second phase, fifteen days later, the patency of the aneurysms was confirmed by Doppler ultrasonography. The described variables were aortic and aneurysm sac patency, incidence of rupture, morbidity and mortality. The statistical analysis program used was STATA v.8.Results:All animals survived to the procedures. Surgical mean time was 73 minutes. Aneurysm rupture, proximal or distal aortic thrombosis, visceral or legs ischemia weren't observed. Parietal thrombus formation was observed in all of the aneurysms, two of which (18%; IC 95% = 3.98 - 48.84) were occluded and nine (82%; IC 95% = 51.15 - 96.01) were patent.Conclusion:In this series, the modifications carried out in the technique related to the surgical approach, race, anesthesia, and imaging exams reproduced the experimental model, reducing its costs, without hindering the analysis of the variables. The satisfactory patency ratio allows the method to be used in experimental models for the development of vascular prostheses.

Objective: to determine the blood flow pattern changes after endovascular treatment of saccular abdominal aortic aneurysm with triple stent. Methods: we conducted a hemodynamic study of seven Landrace and Large White pigs with saccular aneurysms of the infrarenal abdominal aorta artificially produced according to the technique described. The animals were subjected to triple stenting for endovascular aneurysm. We evaluated the pattern of blood flow by duplex scan before and after stent implantation. We used the non-paired Mann-Whitney test for statistical analysis. Results: there was a significant decrease in the average systolic velocity, from 127.4cm/s in the pre-stent period to 69.81cm/s in the post-stent phase. There was also change in the flow pattern from turbulent in the aneurysmal sac to laminate intra-stent. Conclusion: there were changes in the blood flow pattern of saccular abdominal aortic aneurysm after endovascular treatment with triple stent.

Angiolymphoid Hyperplasia with Eosinophilia (ALHE) is a benign vascular proliferative disorder with uncertain etiology and pathogenesis. The aim of this paper is to report a case of ALHE in the temporal artery and discuss the general aspects of this pathology. A 29-year-old female black patient sought the Vascular Surgery Outpatient Service, complaining of bulging in the right temporal region, associated with pain and local discomfort. Physical examination revealed pulsatile bulging in the right temporal region measuring approximately 2.5 × 1.5 cm. Nuclear Magnetic Resonance showed an expansive fusiform lesion in the superficial soft parts of the right temporal region, measuring 2.9 cm in the longest longitudinal axis. Surgical excision proved to be the best therapeutic option for the patient in this case. Histopathological sections showed the proliferation of vessels of different sizes, covered by swollen endothelium, prominent inflammatory infiltrate composed of lymphocytes, plasma cells, eosinophils, and scarce histiocytes. Immunohistochemical analysis of the lesion showed positivity for CD31, corroborating the diagnosis of ALHE.

O tratamento dos aneurismas de aorta abdominal (AAA) justarrenais ou toracoabdominais é um desafio para o cirurgião vascular, uma vez que há acometimento de ramos viscerais (tronco celíaco, artéria mesentérica superior, artérias renais e ramos medulares). A cirurgia aberta para correção desses aneurismas ainda apresenta alta morbimortalidade, mesmo em centros de referência. Na busca de melhores resultados, outras técnicas foram desenvolvidas, como cirurgias híbridas (combinação do tratamento endovascular combypass visceral), implante de endopróteses fenestradas ou ramificadas, implante de endopróteses com “stents em paralelo” e osstents moduladores de fluxo.

Acute limb ischemia is a rare event in the pediatric population, with an estimated incidence of 26 per 100,000 admissions, the majority of which are associated with trauma or iatrogeny. The ideal treatment for these cases is not well-established in the literature, although there is a tendency to choose noninvasive treatment. We report the case of an infant who suffered ischemia to all four limbs secondary to hemodynamic complications after complex heart surgery and in whom significant tissue preservation was achieved with conservative treatment.