Total percutaneous access for aortic endograft placement

O acesso totalmente percutâneo para o implante de endopróteses aórticas, através da preclose technique, é possível mesmo quando utilizadas bainhas introdutoras de elevado perfil. Relatamos sete casos de tratamento endovascular de doenças da aorta, todos realizados de modo percutâneo, e discutimos os principais aspectos desta técnica.Total percutaneous access for aortic endograft delivery, using the preclose technique, is feasible even with the use of large-diameter introducer sheaths. We report seven cases of percutaneous approach in endovascular treatment of aortic diseases and discuss the main technical aspects

Micronutrient availability in amazonian dark earths and adjacent soils

Amazonian Dark Earths (ADEs) are highly fertile soils in areas with predominance of unfertile soils. However, the variation in nutrient availability between regions and the resilience of ADEs to modern agricultural use is still little known, particularly regarding micronutrient contents. Hence, the present study synthesized current information of ADE impacts on extractable micronutrient (Cu, Ni, Fe, Mn, Zn, B) contents at different soil depths and assessed in detail the role of both soil depth and land-use type on extractable Cu, Ni, Fe, Mn and Zn in nine ADEs and adjacent (ADJ) soils from different Amazonian regions. The land-use systems chosen were secondary old (OF) or young (YF) forests, and agricultural systems (AS) in Iranduba, Belterra and Porto Velho. Only eight studies compared extractable (Mehlich-1) micronutrient contents at 21 sites with ADEs and ADJ soils, but only four studies included depths greater than 30 cm, and B and Ni were evaluated in only one study. Higher Mn and Zn, but lower Fe contents were found in ADEs both from literature data and in the present study, especially in the first 30 cm depth. Increases in extractable Ni and Cu in ADEs varied according to the site and the land use considered. Micronutrient contents tended to decrease with depth, but varied depending on the element, site, soil type and land use. Sites with modern agriculture showed few differences in extractable micronutrient contents, except for a decrease in Fe in Belterra and Mn in Porto Velho. Considering the high amounts of some micro- and macronutrients in ADEs further work is warranted concerning soil management and nutrient balance in plants grown on these soils

A influência da síndrome de ovários policísticos e síndrome metabólica na escolha do tipo de parto: revisão de literatura

Introduction: Polycystic Ovary Syndrome (PCOS) and Metabolic Syndrome (MS) are interconnected through various physiological pathways, and their coexistence may have significant implications, especially during pregnancy and the childbirth process. During pregnancy, women with PCOS and MS may face an increased risk of obstetric complications. Regarding the impact on childbirth, PCOS and MS can influence the choice of the type of delivery. Methodology: This work constitutes a literature review, following the systematization with the five pillars described below. 1) Problem statement: "What is the influence of PCOS and MS on the choice of the type of delivery?". 2) Relevant studies were identified using the PUBMED platform with the descriptors "Metabolic Syndrome, Polycystic Ovary Syndrome, Parturition, Pregnancy," PUBMED all in accordance with MESH. 3) Initially, 11 studies were selected; 4 were discarded after a thorough reading as they did not contribute to the problem statement. 4) Data extraction was performed using a text editing program. 5) Experts were consulted. Results: The studies revealed that PCOS and MS are associated with a clinically significant increase in the risk of complications during pregnancy compared to control groups. Additionally, there is a 3 to 4 times higher likelihood of developing pregnancy-induced hypertension and preeclampsia, a threefold increase in the risk of gestational diabetes, and a twofold likelihood of premature birth. The elevated obstetric risk for women with PCOS is reflected in a higher rate of spontaneous abortion. Moreover, it was observed that, compared to the general population, PCOS and MS are more associated with cesarean delivery. Conclusion: Cesarean delivery is predominant in patients with PCOS and MS. Furthermore, there is a higher risk of developing pregnancy-induced hypertension, preeclampsia, and premature birth.Introdução: A síndrome dos ovários policísticos (SOP) e a síndrome metabólica (SM) estão interligadas por várias vias físicas, e sua coexistência pode ter implicações significativas, especialmente durante a gravidez e no processo de parto. Durante a gravidez, as mulheres SOP e SM podem enfrentar um risco aumentado de complicações obstétricas. Quanto ao impacto no parto, a SOP e a SM podem influenciar a escolha do tipo de parto Metodologia: Este trabalho trata-se de uma revisão de literatura, de acordo com a sistematização com os 5 pilares descritos a seguir. 1) Questão problema: “Qual a influência da SOP e SM na escolha do tipo de parto?”. 2) Estudos relevantes foram identificados utilizando na plataforma PUBMED os descritores “Metabolic Syndrome, Polycystic Ovary Syndrome, Parturition, Pregnancy”, na PUBMED, todos de acordo com MESH. 3) 11 estudos foram selecionados inicialmente, 4 foram descartados mediante leitura completa por não contribuir com a questão problema. 4) A extração de dados foi realizada em um programa de edição de texto. 5) Especialistas foram consultados.  Resultado: Os estudos revelaram que a SOP e SM estão associadas a um aumento clinicamente significativo no risco de complicações durante a gravidez, em comparação com os grupos de controle. Além disso, há uma probabilidade de 3 a 4 vezes maior de desenvolver hipertensão causada pela gravidez e pré-eclâmpsia, um aumento de 3 vezes sem risco de diabetes gestacional e uma probabilidade duas vezes maior de parto prematuro. O risco obstétrico elevado para mulheres com SOP se reflete em uma maior taxa de aborto espontâneo. Diante disso, observou-se que em relação a população em geral, SOP e SM associam-se mais com o parto cesariano. Conclusão: O parto cesariano é predominante em pacientes com SOP e SM. Além disso, há maior risco de desenvolver hipertensão causada pela gravidez, pré-eclâmpsia e parto prematuro

Impacts of the Residual Trace Metals of Aquaculture in Net Cages on the Quality of Sediment

Anthropogenic pollution by trace metals in aquatic environments in semiarid zones is a critical area of investigation. The objective of this study was to investigate the concentration and spatial distribution of trace metals in surface sediments in the Rosário reservoir, which is affected by the intensive aquaculture of Tilápia-do-Nilo (Oreochromis niloticus). Sediment samples were collected in three different areas, postculture (PCTV), cultivation (CTV) and control (CTRL) in the dry season in 2019. The granulometric composition, organic matter and concentrations of Fe, Mn, Zn, Cu, Cr, Cd, Pb and Ni metals were determined. Multivariate statistics were used. Geochemical and ecotoxicological indices and a comparison with sediment quality guidelines (SQG) were used. The sediment was characterized by silty clay loam with an average organic matter of 18.76 ± 4.27. The analytical merit figures demonstrated accuracy (metal recoveries in certified standards) between 89 to 99% and high precision (RSD −1). The highest concentration values were found in the CTV areas (Fe: 40 ± 0.22, Mn: 66.48 ± 19.11, Zn: 114.83 ± 59.75 and Cr: 70.85 ± 2.62) and PCTV (Cd: 0.53 ± 0.04, Cu: 71.83 ± 21.20, Pb: 33.71 ± 4.34 and Ni: 44.60 ± 1.79). Pearson’s correlation, hierarchical cluster analysis and principal component analysis confirmed the influence of fish farming on metals. Only Ni presented concentration values higher than the reference value established in the SQG. Thus, considering the probable geochemical and ecotoxicological effects, they comprise the two lowest levels of impact

Impacts of the Residual Trace Metals of Aquaculture in Net Cages on the Quality of Sediment

Anthropogenic pollution by trace metals in aquatic environments in semiarid zones is a critical area of investigation. The objective of this study was to investigate the concentration and spatial distribution of trace metals in surface sediments in the Rosário reservoir, which is affected by the intensive aquaculture of Tilápia-do-Nilo (Oreochromis niloticus). Sediment samples were collected in three different areas, postculture (PCTV), cultivation (CTV) and control (CTRL) in the dry season in 2019. The granulometric composition, organic matter and concentrations of Fe, Mn, Zn, Cu, Cr, Cd, Pb and Ni metals were determined. Multivariate statistics were used. Geochemical and ecotoxicological indices and a comparison with sediment quality guidelines (SQG) were used. The sediment was characterized by silty clay loam with an average organic matter of 18.76 ± 4.27. The analytical merit figures demonstrated accuracy (metal recoveries in certified standards) between 89 to 99% and high precision (RSD < 5%). The concentration ranges for the metals were Fe: 0.11–0.85 (%), Mn: 14.46–86.91, Zn: 2.6–220.56, Cu: 26.89–98.75, Cr: 60.18–76.06, Cd: 0.38–0.59, Pb: 18.13–43.13, and Ni: 34.4–46.75, all in (mg/kg−1). The highest concentration values were found in the CTV areas (Fe: 40 ± 0.22, Mn: 66.48 ± 19.11, Zn: 114.83 ± 59.75 and Cr: 70.85 ± 2.62) and PCTV (Cd: 0.53 ±0.04, Cu: 71.83 ± 21.20, Pb: 33.71 ± 4.34 and Ni: 44.60 ± 1.79). Pearson’s correlation, hierarchical cluster analysis and principal component analysis confirmed the influence of fish farming on metals. Only Ni presented concentration values higher than the reference value established in the SQG. Thus, considering the probable geochemical and ecotoxicological effects, they comprise the two lowest levels of impact