The influence of insertion torque on pedicular screws' pullout resistance

Foram realizados ensaios mecânicos para avaliação do torque de inserção na resistência ao arrancamento dos parafusos pediculares. Foram utilizadas no estudo 30 vértebras de suínos da raça Landrace, nas quais parafusos de 5mm foram inseridos nos pedículos vertebrais. O orifício piloto foi realizado com brocas de 2,5mm, 3,8mm e 4,5mm. Foram realizados ensaios mecânicos de arrancamento dos implantes em máquina universal de testes. Foi observado aumento do torque de inserção dos parafusos com a perfuração do orifício piloto com diâmetro menor que o diâmetro interno do parafuso, e redução com o orifício piloto maior que o diâmetro interno do parafuso. Foi observada diferença estatística entre os valores do torque de inserção. A resistência ao arrancamento dos implantes aumentou com a perfuração do orifício piloto com valores menores que o diâmetro interno do parafuso e diminuiu com a perfuração com diâmetro maior que o diâmetro interno do parafuso. Foi observada diferença estatística dos valores da resistência ao arrancamento dos implantes apenas com a perfuração do orifício piloto com diâmetro maior que o diâmetro interno do parafuso.Mechanical assays were performed in order to evaluate the effect of the insertion torque on the pullout resistance of pedicular screws. Thirty vertebrae of Landrace pigs were used in the study, with 5-mm screws being inserted into the vertebral pedicles. The pilot hole was drilled with 1.5, 3.8 and 4.5 mm burrs. Mechanical assays of implant pullout resistance were performed with a universal testing machine. An increase in the insertion torque of the screws was observed when a pilot hole with a smaller diameter than the inner diameter of the screw was drilled, and a reduction was observed when the diameter of the pilot hole was larger than the inner diameter of the screw. A statistically significant difference in the insertion torque values was observed. The pullout resistance of the implants increased when the pilot hole had a smaller diameter than the inner diameter of the screw and decreased when the pilot hole had a larger diameter than the inner diameter of the screw. A statistically significant difference in implant pullout resistance was observed only when the diameter of the pilot hole was larger than the inner diameter of the screw.FAPESCAPES - PROBRA

Acrodermatite por deficiência de zinco após associação de gastroplastia vertical com derivação jejuno-ileal: relato de caso

CONTEXT: Nutritional complications may occur after bariatric surgery, due to restriction of food intake and impaired digestion or absorption of nutrients. CASE REPORT: After undergoing vertical gastroplasty and jejunoileal bypass, a female patient presented marked weight loss and protein deficiency. Seven months after the bariatric surgery, she presented dermatological features compatible with acrodermatitis enteropathica, as seen from the plasma zinc levels, which were below the reference values (34.4 mg%). The skin lesions improved significantly after 1,000 mg/day of zinc sulfate supplementation for one week. CONCLUSIONS: The patient's evolution shows that the multidisciplinary team involved in surgical treatment of obesity should take nutritional deficiencies into consideration in the differential diagnosis of skin diseases, in order to institute early treatment.CONTEXTO: Complicações nutricionais podem ocorrer após cirurgia bariátrica, pela restrição no consumo de alimentos e por comprometimento do processo digestivo e absortivo. \ud RELATO DO CASO: Após ter sido submetida a gastroplastia vertical e derivação jejuno-ileal, uma paciente apresentou acentuada perda de peso e desnutrição proteica. Sete meses após a cirurgia bariátrica, manifestou-se quadro dermatológico compatível com acrodermatite enteropática, verificado a partir dos níveis plasmáticos de zinco (34,4 mg%), que se situavam abaixo dos valores de referência. As lesões cutâneas melhoraram significativamente após 1.000 mg/dia de suplementação de sulfato de zinco, por uma semana. \ud CONCLUSÕES: A evolução da paciente mostra que a equipe multiprofissional envolvida no tratamento cirúrgico da obesidade deve considerar as deficiências nutricionais no diagnóstico diferencial das doenças cutâneas, a fim de instituir precocemente o tratamento

Production of vegetable oil blends and structured lipids and their effect on wound healing

Two oil blends (sunflower/canola oils 85/15 (BL1) and canola/linseed oils 70/30 (BL2)), were prepared and enzymatically interesterified to be applied to surgically-induced wounds in rats. Following surgery, the animals were submitted to the Treatment with Physiological Saline (TPS) (control group), Blends (TBL), and Structured Lipids (TSL). The control group (TPS) received physiological saline solution for 15 days. In TBL, BL1 was administered during the inflammation phase (days 0-3) and BL2 in the tissue formation and remodeling phase (days 4-15). In TSL, Structured Lipid 1 (SL1) and Structured Lipid 2 (SL2) were used instead of BL1 and BL2, respectively. The aim of this study was to compare wound closure evolution among rats treated with the blends or structured lipids versus control rats treated with physiological saline. The wound healing process was evaluated by measuring the wound areas along the treatments and the concentrations of cytokines. An increase in the areas of wounds treated with the blends and structured lipids in the inflammatory phase was observed, followed by a steeper closure curve compared to wounds treated with physiological saline. The changes observed during the inflammatory phase suggest a potential therapeutic application in cutaneous wound healing which should be further investigated.</p

I Diretrizes do Grupo de Estudos em Cardiogeriatria da Sociedade Brasileira de Cardiologia

O idoso apresenta características próprias na manifestação das doenças, na resposta à terapêutica e no efeito colateral dos medicamentos. Constitui um grupo de maior risco para o aparecimento das doenças degenerativas, em geral, e cardiovasculares, em particular, além de apresentar maior número de comorbidades

Catálogo Taxonômico da Fauna do Brasil: setting the baseline knowledge on the animal diversity in Brazil

The limited temporal completeness and taxonomic accuracy of species lists, made available in a traditional manner in scientific publications, has always represented a problem. These lists are invariably limited to a few taxonomic groups and do not represent up-to-date knowledge of all species and classifications. In this context, the Brazilian megadiverse fauna is no exception, and the Catálogo Taxonômico da Fauna do Brasil (CTFB) (http://fauna.jbrj.gov.br/), made public in 2015, represents a database on biodiversity anchored on a list of valid and expertly recognized scientific names of animals in Brazil. The CTFB is updated in near real time by a team of more than 800 specialists. By January 1, 2024, the CTFB compiled 133,691 nominal species, with 125,138 that were considered valid. Most of the valid species were arthropods (82.3%, with more than 102,000 species) and chordates (7.69%, with over 11,000 species). These taxa were followed by a cluster composed of Mollusca (3,567 species), Platyhelminthes (2,292 species), Annelida (1,833 species), and Nematoda (1,447 species). All remaining groups had less than 1,000 species reported in Brazil, with Cnidaria (831 species), Porifera (628 species), Rotifera (606 species), and Bryozoa (520 species) representing those with more than 500 species. Analysis of the CTFB database can facilitate and direct efforts towards the discovery of new species in Brazil, but it is also fundamental in providing the best available list of valid nominal species to users, including those in science, health, conservation efforts, and any initiative involving animals. The importance of the CTFB is evidenced by the elevated number of citations in the scientific literature in diverse areas of biology, law, anthropology, education, forensic science, and veterinary science, among others