Background: Lower limbs are frequently involved in vascular trauma, but it is still not clear which factors lead to unfavorable clinical outcomes. Objectives: To determine the clinical profile of patients with femoropopliteal injuries, the trauma mechanisms, and treatment and identify which factors led to unfavorable outcomes. Methods: A retrospective study based on the medical records of patients treated from 2017 to 2021. The following data were assessed: sex, age, distance to reach the hospital, trauma mechanism, hypovolemic shock, additional injuries, treatment of vascular injuries, whether fasciotomy was needed, inappropriate intraoperative decisions, and injury severity score. Need for surgical reintervention, amputation, and death were defined as unfavorable outcomes. Univariate, bivariate, and logistic regression analyses were conducted. Results: The sample comprised 94 patients; 83% were men; mean age was 30.8 years; combined arterial and venous injuries prevailed (57.5%); and superficial femoral vessels were the most affected (61.7%). Penetrating mechanisms prevailed (80.9%). Arterial injuries were most frequently treated with venous graft (59.6%) and venous injuries underwent ligation (81.4%). In 15% of cases, inappropriate surgical decisions were detected; most often use of the ipsilateral great saphenous vein for arterial reconstruction. Unfavorable outcomes occurred in 44.7%: surgical reintervention was necessary in 21.3% and limb amputation in 25.5%, while 9.5% of the patients died. Conclusions: These injuries mainly involved young men, victims of gunshot wounds. Superficial femoral vessels were the most injured; concomitant non-vascular trauma was frequent, mainly fractures. Inappropriate surgical decisions increased the need for reinterventions by 34 times. Need for fasciotomy, presence of fracture/dislocation, blunt trauma mechanism, and popliteal artery injury increased the risk of amputation.
Studies indicating the influence of masticatory dysfunction, due to a soft diet or lack of molars, on impairing spatial memory and learning have led to research about neuronal connections between areas and cell populations possibly affected. In this sense, with scarce detailed data on the subfields of hippocampus in dementia neurodegeneration, there is no information about astrocytic responses in its different layers. Thus, considering this context, the present study evaluated the effects of deprivation and rehabilitation of masticatory activity, aging, and environmental enrichment on the stereological quantification of hippocampal astrocytes from layers CA1, CA3, and DG. For this purpose, we examined mature (6-month-old; 6M), and aged (18-month-old; 18M) mice, subjected to distinct masticatory regimens and environments. Three different regimens of masticatory activity were applied: continuous normal mastication with hard pellets (HD); normal mastication followed by deprived mastication with equal periods of pellets followed by soft powder (HD/SD); or rehabilitated masticatory activity with equal periods of HD, followed by powder, followed by pellets (HD/SD/HD). Under each specific regimen, half of the animals were raised in standard cages (impoverished environment (IE)) and the other half in enriched cages (enriched environment (EE)), mimicking sedentary or active lifestyles. Microscopic stereological, systematic, and random sampling approaches with an optical dissector of GFAP-immunolabeled astrocytes were done, allowing for an astrocyte numerical estimate. Stratum moleculare and hilus, from the dentate gyrus (DG) and Strata Lacunosum-Moleculare, Oriens, and Radiatum, similarly to the dentate gyrus, showed no significant change in any of the investigated variables (age, diet, or environment) in these layers. However, in Stratum radiatum, it was possible to observe significant differences associated with diet regimens and age. Therefore, diet-related differences were found when the HD 18M IE group was compared to the HD/SD/HD 18-month-old group in the same environment (IE) (p = 0.007). In the present study, we present modulatory factors (masticatory function, environmental enrichment, and aging) for the differentiated quantitative laminar response in the hippocampal regions, suggesting other studies to read the plasticity and responsiveness of astrocytes, including the molecular background.
Astrocytes , Hippocampus , Mice , Animals , Astrocytes/physiology , Disease Models, Animal , Powders , Dentate Gyrus/physiology
Resumo Contexto O trauma vascular acomete frequentemente os membros inferiores; entretanto, ainda há dúvidas sobre quais fatores levam a desfechos desfavoráveis. Objetivos Determinar o perfil das vítimas de traumatismo femoropoplíteo, o tratamento utilizado e fatores relacionados a desfechos desfavoráveis. Métodos Estudo retrospectivo, baseado em prontuários de pacientes operados entre 2017 e 2021. Foram analisados: sexo, idade, distância percorrida para atendimento, mecanismo de trauma, presença de choque hipovolêmico, lesões associadas, tratamento, realização de fasciotomia, decisões intraoperatórias inadequadas e índice de severidade de trauma. Necessidade de reintervenção, amputação e óbito foram considerados desfechos desfavoráveis. Foram utilizadas análises univariadas, bivariadas e regressão logística. Resultados Noventa e quatro pacientes foram selecionados, sendo 83% homens, com idade média de 30,8 anos. Lesões arteriais e venosas simultâneas ocorreram em 57,5% dos casos; vasos femorais superficiais foram mais acometidos (61,7%), e mecanismos penetrantes, mais prevalentes (80,9%). Lesões arteriais foram frequentemente tratadas com enxerto venoso (59,6%), e lesões venosas foram submetidas à ligadura (81,4%). Em 15% houve decisões cirúrgicas inadequadas, sendo o uso da safena magna ipsilateral para reconstrução arterial a mais comum. Ocorreram desfechos desfavoráveis em 44,7% dos casos; em 21,3%, foi necessária reintervenção; amputação em 25,5%; e ocorreu óbito em 9,5% dos pacientes. Conclusões As lesões acometeram principalmente homens jovens, vítimas de ferimento por arma de fogo. Vasos femorais superficiais foram os mais lesados, e traumatismos não vasculares concomitantes foram frequentes, principalmente fraturas. Decisões cirúrgicas inadequadas aumentaram em 34 vezes a necessidade de reintervenções. Necessidade de realização de fasciotomia, presença de fratura/luxação, mecanismo contuso de trauma e lesão de artéria poplítea aumentaram o risco de amputação.
Abstract Background Lower limbs are frequently involved in vascular trauma, but it is still not clear which factors lead to unfavorable clinical outcomes. Objectives To determine the clinical profile of patients with femoropopliteal injuries, the trauma mechanisms, and treatment and identify which factors led to unfavorable outcomes. Methods A retrospective study based on the medical records of patients treated from 2017 to 2021. The following data were assessed: sex, age, distance to reach the hospital, trauma mechanism, hypovolemic shock, additional injuries, treatment of vascular injuries, whether fasciotomy was needed, inappropriate intraoperative decisions, and injury severity score. Need for surgical reintervention, amputation, and death were defined as unfavorable outcomes. Univariate, bivariate, and logistic regression analyses were conducted. Results The sample comprised 94 patients; 83% were men; mean age was 30.8 years; combined arterial and venous injuries prevailed (57.5%); and superficial femoral vessels were the most affected (61.7%). Penetrating mechanisms prevailed (80.9%). Arterial injuries were most frequently treated with venous graft (59.6%) and venous injuries underwent ligation (81.4%). In 15% of cases, inappropriate surgical decisions were detected; most often use of the ipsilateral great saphenous vein for arterial reconstruction. Unfavorable outcomes occurred in 44.7%: surgical reintervention was necessary in 21.3% and limb amputation in 25.5%, while 9.5% of the patients died. Conclusions These injuries mainly involved young men, victims of gunshot wounds. Superficial femoral vessels were the most injured; concomitant non-vascular trauma was frequent, mainly fractures. Inappropriate surgical decisions increased the need for reinterventions by 34 times. Need for fasciotomy, presence of fracture/dislocation, blunt trauma mechanism, and popliteal artery injury increased the risk of amputation.
Infectious aneurysms, formerly known as mycotic aneurysms, are rare, most often involve the aorta in young patients, and have a greater tendency to rupture than aneurysms of other etiologies. The most characteristic shape is saccular and the most common etiologic agents are Staphylococcus sp. and Salmonella sp. There is scant and imprecise information in the literature about correct nomenclature, diagnosis, and treatment. The authors present three cases in which diagnostic and therapeutic procedures were documented. In addition to reporting this case series, the authors also present a review of the subject, outlining pertinent diagnostic and therapeutic strategies.
Resumo Aneurismas infecciosos, anteriormente chamados de aneurismas micóticos, são raros; acometem com maior frequência a aorta de pacientes jovens e apresentam maior tendência à rotura do que aneurismas de outras etiologias. O formato sacular é o mais característico, e os agentes etiológicos mais comuns são Staphylococcus sp e Salmonella sp. A literatura fornece informações limitadas e imprecisas sobre a correta nomenclatura, diagnóstico e tratamento da doença. Os autores reuniram três casos cujos procedimentos diagnósticos e terapêuticos foram documentados. Além de relatar essa série de casos, realiza-se uma revisão sobre o tema, a fim de estabelecer estratégias diagnósticas e terapêuticas pertinentes.
Abstract Infectious aneurysms, formerly known as mycotic aneurysms, are rare, most often involve the aorta in young patients, and have a greater tendency to rupture than aneurysms of other etiologies. The most characteristic shape is saccular and the most common etiologic agents are Staphylococcus sp. and Salmonella sp. There is scant and imprecise information in the literature about correct nomenclature, diagnosis, and treatment. The authors present three cases in which diagnostic and therapeutic procedures were documented. In addition to reporting this case series, the authors also present a review of the subject, outlining pertinent diagnostic and therapeutic strategies.
Humans , Male , Adult , Middle Aged , Aneurysm, Infected/surgery , Aneurysm, Infected/diagnosis , Aortic Aneurysm, Abdominal/surgery , Aortic Aneurysm, Abdominal/diagnosis , Aortic Aneurysm/drug therapy , Aneurysm, Infected/drug therapy , Anti-Bacterial Agents/therapeutic use
