Direct oral anticoagulants versus vitamin K antagonists in patients with atrial fibrillation and stage 5 chronic kidney disease under dialysis: A systematic review and meta-analysis of randomized controlled trials.

BACKGROUND: In patients with atrial fibrillation (AF) and normal or slightly impaired renal function, the use of direct oral anticoagulants (DOACs) is preferable to vitamin K antagonists (VKAs). However, in patients undergoing hemodialysis, the efficacy, and safety of DOACs compared with VKAs are still unknown. PURPOSE: To review current evidence about the safety and efficacy of DOACs compared to VKAs, in patients with AF and chronic kidney disease under hemodialysis. METHODS: We systematically searched PubMed, Scopus, and Cochrane databases for RCTs comparing DOACs with VKAs for anticoagulation in patients with AF on dialysis therapy. Outcomes of interest were: (1) stroke; (2) major bleeding; (3) cardiovascular mortality; and (4) all-cause mortality. Statistical analysis was performed using RevMan 5.1.7 and heterogeneity was assessed by I2 statistics. RESULTS: Three randomized controlled trials were included, comprising a total of 383 patients. Of these, 218 received DOACs (130 received apixaban; 88 received rivaroxaban), and 165 were treated with VKAs (116 received warfarin; 49 received phenprocoumon). The incidence of stroke was significantly lower in patients treated with DOACs (4.7%) compared with those using VKAs (9.5%) (RR 0.42; 95% CI 0.18-0.97; p = 0.04; I2 = 0%). However, the difference was not statistically significant in the case of ischemic stroke specifically (RR 0.42; 95% CI 0.17-1.04; p = 0.06; I2 = 0%). As for the major bleeding outcome, the DOAC group (11%) had fewer events than the VKA group (13.9%) but without statistical significance (RR 0.75; 95% CI 0.45-1.28; p = 0.29; I2 = 0%). There was no significant difference between groups regarding cardiovascular mortality (RR 1.23; 95% CI 0.66-2.29; p = 0.52; I2 = 13%) and all-cause mortality (RR 0.98; 95% CI 0.77-1.24; p = 0.84; I2 = 16%). CONCLUSION: This meta-analysis suggests that in patients with AF on dialysis, the use of DOACs was associated with a significant reduction in stroke, and a numerical trend of less incidence of major bleeding compared with VKAs, but in this case with no statistical significance. Results may be limited by a small sample size or insufficient statistical power.

Renal involvement in systemic lupus erythematosus: additional histopathological lesions.

A common criticism of the classification of lupus nephritis is the relative scarcity of information regarding tubular, interstitial, and vascular changes compared to the available information regarding glomerular changes, even though their potential for independent progression is known. This study reviewed the importance of less explored lesions by the current and widely used 2003 classification of lupus nephritis of the International Society of Nephrology/Renal Pathology Society (ISN/RPS), with emphasis on the tubulointerstitial, podocyte, and vascular lesions, increasingly recognised as being important in the pathogenesis and prognosis of the disease. Recognition of these lesions can help with therapeutic decision-making, thereby allowing better results for patients with systemic lupus erythematosus.

Collapsing Glomerulopathy: A Review by the Collapsing Brazilian Consortium.

Collapsing glomerulopathy (CG) is a clinicopathologic entity characterized by segmentar or global collapse of the glomerulus and hypertrophy and hyperplasia of podocytes. The Columbia classification of 2004 classified CG as a histological subtype of focal segmental glomerulosclerosis (FSGS). A growing number of studies have demonstrated a high prevalence of CG in many countries, especially among populations with a higher proportion of people with African descent. The present study is a narrative review of articles extracted from PubMed, Medline, and Scielo databases from September 1, 2020 to December 31, 2021. We have focused on populational studies (specially cross-sectional and cohort articles). CG is defined as a podocytopathy with a distinct pathogenesis characterized by strong podocyte proliferative activity. The most significant risk factors for CG include APOL1 gene mutations and infections with human immunodeficiency virus and severe acute respiratory syndrome coronavirus 2. CG typically presents with more severe symptoms and greater renal damage. The prognosis is notably worse than that of other FSGS subtypes.

Ensino híbrido para ensino de patologia renal na residência médica: um relato / Blended Learning for teaching Renal Pathology in Medical Residency - a report

Resumo: Introdução: O ensino híbrido pode ser utilizado como recurso pedagógico às formas tradicionais de ensinar. A ausência de um laboratório de patologia renal pode gerar uma lacuna na formação de médicos residentes em nefrologia. Este estudo descreve como a complementação do conteúdo com o uso de um atlas on-line de patologia renal foi descrita por médicos residentes. Relato de experiência: Um atlas virtual de patologia renal elaborado por preceptores das residências médicas de nefrologia e patologia foi apresentado a oito médicos residentes matriculados no serviço, que, durante 15 dias, incluíram os estudos desse conteúdo em suas atividades. Os residentes avaliaram a experiência de ensino-aprendizagem por meio de um grupo focal. Discussão: Estratégias de ensino on-line podem ser utilizadas para complementar o conhecimento adquirido durante a residência médica. No entanto, é importante que essa etapa da estratégia de ensino híbrido seja motivadora na visão do estudante e se adapte ao momento vivenciado pelos médicos residentes, os quais já possuem carga de trabalho determinada. Esses pontos estiveram entre os temas emergentes na análise temática do conteúdo do grupo focal, que também incluiu sugestões dos alunos em como modificar a apresentação do conteúdo. Conclusão: A inserção de estratégias de ensino híbrido pode auxiliar a formação dos médicos residentes, bem como abrir espaço para a produção discente. Parcerias interinstitucionais devem ser desenvolvidas para suprir barreiras à elaboração de e-learning pelos formadores médicos.

Abstract: Introduction: Blended Learning can be used as a pedagogical resource to the traditional ways of teaching. The lack of a Renal Pathology laboratory can result in a gap in the training of resident physicians in Nephrology. This study describes how complementing the content with the use of an online Renal Pathology atlas was described by resident physicians. Experience report: A virtual atlas of Renal Pathology prepared by preceptors of the Medical Residencies of Nephrology and Pathology was presented to eight resident physicians enrolled in the service, who, for fifteen days, included the studies of this content in their activities. The residents evaluated the teaching-learning experience through a focus group. Discussion: Online teaching strategies can be used to complement the knowledge acquired during Medical Residency. However, it is important that this stage of the blended learning strategy be motivating in the students' view, adapting to the moment experienced by resident physicians, who already have a pre-determined workload. These points were among the emerging topics in the thematic analysis of the content of the focus group, which also included suggestions from the students on how to modify the content presentation. Conclusion: The inclusion of blended learning strategies can help the training of resident physicians, as well as open space for student production. Inter-institutional partnerships should be developed to overcome barriers to e-learning development by medical trainers.

The prevalence of low back pain in nurses at a university hospital in the eastern area of são paulo / Prevalência de dor lombar em enfermeiros em um hospital universitário da zona leste de são paulo / Prevalencia de dolor de la región lumbar en enfermeros de un hospital universitario de la zona este de são paulo

ABSTRACT Objective: To evaluate the prevalence of low back pain in nurses at a university hospital in São Paulo and establish a relationship with social aspects. Methods: A cross-sectional study was carried out, through the application of a questionnaire containing social questions(weight, age, height, work sector, working hours, physical activity, presence and frequency of low back pain) in addition to the Oswestry questionnaire. Results: One hundred fifty-three nurses participated in the study. Of these, 92.30% of the women and 73.91% of the men presented low back pain, with a third classifying the pain as sporadic. In relation to BMI, pain is lower in those who are underweight (60%) and higher among those who are overweight (96.77%). Most of the sample was sedentary (66%), and of these, 96% had low back pain. There was no difference in the comparison by working hours, in relation to work sector, pain was more present in the following sectors: coordination (100%); children's ward (92%); adult emergency room (90%) and adult ICU (31%). Thirty nurses worked double shifts, and of these, 90% reported low back pain, while among those who worked only at the university hospital, 89.4% reported pain. In relation to working hours, the longer the working day, the greater the pain. In the function assessment (Oswestry), 99 participants obtained a value of up to 30% disability. Conclusion: Based on the results of this work, it is concluded that there is a high prevalence of low back pain in nurses at the Hospital Universitário; however, it was not possible to determine a direct risk factor associated with this high prevalence. Level of Evidence IV; Cross-sectional study.

RESUMO: Objetivo: Avaliar a prevalência de dor lombar em enfermeiros de um hospital universitário da zona leste de São Paulo e estabelecer relação com aspectos sociais. Métodos: Foi realizado um estudo de corte transversal, através da aplicação de um questionário contendo questões sociais (peso, idade, altura, setor de trabalho, carga horária, prática de exercício físico, presença e frequência de dor lombar), além do questionário Oswestry. Resultados: Cento e cinquenta e três enfermeiros participaram do estudo, destes 92,30% das mulheres e 73,91% dos homens apresentaram dor lombar, sendo que um terço classificava a dor como esporádica. Em relação ao IMC, a dor é menor naqueles que estão abaixo do peso (60%) e maior entre aqueles que se apresentam sobrepeso (96,77%). A maioria da amostra era sedentária (66%), sendo que destes, 96% apresentavam dor lombar. Não houve diferença na comparação para período de trabalho, já em relação ao setor de trabalho a dor estava mais presente no setor de coordenação (100%), seguido por enfermaria infantil (92%), pronto socorro adulto (90%) e UTI adulto (31%). Trinta enfermeiros faziam dupla jornada, e destes, 90% relataram dor, já nos que trabalhavam somente no hospital universitário 89,4% relataram dor. Em relação à carga horária, quanto maior a jornada, mais dor. Na avaliação da função (Oswestry), 99 participantes obtiveram um valor de até 30% de incapacidade. Conclusão: A partir dos resultados deste trabalho, conclui-se que existe uma alta prevalência de dor lombar nos enfermeiros do Hospital Universitário, no entanto, não foi possível determinar um fator de risco direto associado à esta alta prevalência. Nível de Evidência IV; Estudo de corte transversal.

RESUMEN: Objetivo: Evaluar la prevalencia del dolor de la región lumbar en enfermeros y enfermeras de un hospital universitario de la zona este de São Paulo y establecer una relación con los aspectos sociales. Métodos: Se realizó un estudio transversal aplicando un cuestionario que contenía preguntas sociales (peso, edad, altura, sector laboral, carga de trabajo, práctica de ejercicio físico, presencia y frecuencia de dolor en la región lumbar), además del cuestionario de Oswestry. Resultados: Participaron del estudio 153 enfermeros y enfermeras, de los cuales el 92,30% de las mujeres y el 73,91% de los hombres presentaban dolor en la región lumbar, y un tercio clasificaba el dolor como esporádico. En cuanto al IMC, el dolor es menor en los que tienen un peso inferior al normal (60%) y mayor entre los que tienen sobrepeso (96,77%).La mayoría de la muestra era sedentaria (66%), y de ellos, el 96% presentaba lumbalgia. No hubo diferencias en la comparación por período de trabajo, pero en cuanto al sector de trabajo, el dolor estuvo más presente en el sector de: coordinación (100%); seguido de la sala infantil (92%); urgencias de adultos (90%) y UCI de adultos (31%). Treinta enfermeros y enfermeras trabajaban en doble turno, y de ellos, el 90% manifestó dolor, mientras que de los que trabajaban sólo en el hospital universitario, el 89,4% manifestó dolor. En cuanto a la carga de trabajo, cuanto más largo es el turno, más dolor. En la evaluación de la función (Oswestry), 99 participantes obtuvieron un valor de hasta un 30% de incapacidad. Conclusión: A partir de los resultados de este estudio, se concluye que existe una alta prevalencia de dolor de la región lumbar en enfermeros y enfermeras del Hospital Universitario, sin embargo, no fue posible determinar un factor de riesgo directo asociado a esta alta prevalencia. Nivel de Evidencia IV; .Estudio Transversal.

Non-lupus full-house nephropathy: a case series / Nefropatia "full-house" não relacionada ao lúpus: uma série de casos

Abstract Systemic lupus erythematosus (SLE) is a chronic multisystem autoimmune inflammatory disease. However, some patients may exhibit a histological pattern of kidney injury, with characteristics indistinguishable from lupus nephritis, but without presenting any extrarenal symptoms or serologies suggestive of SLE. Such involvement has recently been called non-lupus full-house nephropathy. The objective is to report a series of clinical cases referred to the Laboratory of the Federal University of Maranhão that received the diagnosis of "full-house" nephropathy unrelated to lupus, upon immunofluorescence and to discuss its evolution and outcomes. Non-lupus full-house nephropathy represents a diagnostic and therapeutic challenge, because it is a new entity, which still needs further studies and may be the initial manifestation of SLE, isolated manifestation of SLE or a new pathology unrelated to SLE.

Resumo O lúpus eritematoso sistêmico (LES) é uma doença inflamatória crônica autoimune multissistêmica. Alguns pacientes, contudo, podem exibir um padrão histológico de lesão renal, com características indistinguíveis da nefrite lúpica, porém sem apresentar quaisquer sintomas extrarrenais ou sorologias sugestivas de LES. Tal acometimento tem sido recentemente denominado nefropatia "full-house" não relacionada ao lúpus. O objetivo é relatar uma série de casos clínicos encaminhados ao Laboratório da Universidade Federal do Maranhão que receberam o diagnóstico de nefropatia "full-house" não relacionada ao lúpus à imunofluorescência e discutir sua evolução e desfechos. A nefropatia "full-house" não relacionada ao lúpus representa um desafio diagnóstico e terapêutico por ser uma entidade nova, que ainda necessita de maiores estudos e pode ser a manifestação inicial do LES, manifestação isolada do LES ou uma patologia nova não relacionada ao LES.

Antibrush Border Antibody Disease: A Case Report and Literature Review.

Anti-brush border antibody (ABBA) disease, also called anti-low-density lipoprotein receptor-related protein 2 (anti-LRP2) nephropathy, occurs due to the formation of antibodies against brush border antigens of the renal proximal convoluted tubule. We report a case of ABBA disease in a male farmer in his 30s who presented with 2 years of polyuria, dysuria, nocturia, and urinary urgency. He described a history of long-term occupational exposure to pesticides and silica, evolving into possible pneumoconiosis, and prior pulmonary tuberculosis. At presentation, he had reduced kidney function (serum creatinine 3.6 mg/dL) with hyponatremia, hypokalemia, hypophosphatemia, a normal anion gap, metabolic acidosis, and respiratory acidosis, and 2.2 g/day of urine proteinuria. The kidney biopsy was consistent with ABBA, showing amorphous immune-deposits in the tubular basement membrane and strong positivity on indirect immunofluorescence in the brush border of the proximal tubules. The trigger for production of ABBA is still unknown, but it may be associated with chronic conditions such as pulmonary tuberculosis and occupational exposures such as silica and pesticides, as seen in the patient in this report. Most cases do not respond to immunosuppression, and the prognosis is poor.

Renal Morphology in Coronavirus Disease: A Literature Review.

Renal biopsy is useful to better understand the histological pattern of a lesion (glomerular, tubulointerstitial, and vascular) and the pathogenesis that leads to kidney failure. The potential impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on the kidneys is still undetermined, and a variety of lesions are seen in the kidney tissue of coronavirus disease patients. This review is based on the morphological findings of patients described in case reports and a series of published cases. A search was conducted on MEDLINE and PubMed of case reports and case series of lesions in the presence of non-critical infection by SARS-CoV-2 published until 15/09/2020. We highlight the potential of the virus directly influencing the damage or the innate and adaptive immune response activating cytokine and procoagulant cascades, in addition to the genetic component triggering glomerular diseases, mainly collapsing focal segmental glomerulosclerosis, tubulointerstitial, and even vascular diseases. Kidney lesions caused by SARS-CoV-2 are frequent and have an impact on morbidity and mortality; thus, studies are needed to assess the morphological kidney changes and their mechanisms and may help define their spectrum and immediate or long-term impact.

Non-lupus full-house nephropathy: a case series.

Systemic lupus erythematosus (SLE) is a chronic multisystem autoimmune inflammatory disease. However, some patients may exhibit a histological pattern of kidney injury, with characteristics indistinguishable from lupus nephritis, but without presenting any extrarenal symptoms or serologies suggestive of SLE. Such involvement has recently been called non-lupus full-house nephropathy. The objective is to report a series of clinical cases referred to the Laboratory of the Federal University of Maranhão that received the diagnosis of "full-house" nephropathy unrelated to lupus, upon immunofluorescence and to discuss its evolution and outcomes. Non-lupus full-house nephropathy represents a diagnostic and therapeutic challenge, because it is a new entity, which still needs further studies and may be the initial manifestation of SLE, isolated manifestation of SLE or a new pathology unrelated to SLE.

Brazilian Consortium for the Study on Renal Diseases Associated With COVID-19: A Multicentric Effort to Understand SARS-CoV-2-Related Nephropathy.

Kidney involvement appears to be frequent in coronavirus disease 2019 (COVID-19). Despite this, information concerning renal involvement in COVID-19 is still scarce. Several mechanisms appear to be involved in the complex relationship between the virus and the kidney. Also, different morphological patterns have been described in the kidneys of patients with COVID-19. For some authors, however, this association may be just a coincidence. To investigate this issue, we propose assessing renal morphology associated with COVID-19 at the renal pathology reference center of federal university hospitals in Brazil. Data will come from a consortium involving 17 federal university hospitals belonging to Empresa Brasileira de Serviços Hospitalares (EBSERH) network, as well as some state hospitals and an autopsy center. All biopsies will be sent to the referral center for renal pathology of the EBSERH network. The data will include patients who had coronavirus disease, both alive and deceased, with or without pre-existing kidney disease. Kidney biopsies will be analyzed by light, fluorescence, and electron microscopy. Furthermore, immunohistochemical (IHC) staining for various inflammatory cells (i.e., cells expressing CD3, CD20, CD4, CD8, CD138, CD68, and CD57) as well as angiotensin-converting enzyme 2 (ACE2) will be performed on paraffinized tissue sections. In addition to ultrastructural assays, in situ hybridization (ISH), IHC and reverse transcription-polymerase chain reaction (RT-PCR) will be used to detect Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV-2) in renal tissue. For the patients diagnosed with Collapsing Glomerulopathy, peripheral blood will be collected for apolipoprotein L-1 (APOL1) genotyping. For patients with thrombotic microangiopathy, thrombospondin type 1 motif, member 13 (ADAMTS13), antiphospholipid, and complement panel will be performed. The setting of this study is Brazil, which is second behind the United States in highest confirmed cases and deaths. With this complete approach, we hope to help define the spectrum and impact, whether immediate or long-term, of kidney injury caused by SARS-CoV-2.

Translumbar hemodialysis long-term catheters: an alternative for vascular access failure / Cateter translombar para hemodiálise: uma alternativa para falência de acesso vascular

Abstract Introduction: Vascular access (VA) in hemodialysis (HD) is essential to end-stage renal disease (ESRD) patients survival. Unfortunately, after some years in HD program, a significant number of patients may develop VA failure for many reasons. In this situation, arterial venous fistula (AVF) confection or catheters placement in traditional vascular sites (jugular, femoral or subclavian) are not feasible. In this scenario, translumbar tunneled dialysis catheter (TLDC) may be a salvage option. Objectives: To describe placement technic, complications, and patency of 12 TLDC. Methods: A retrospective study was performed to analyze 12 TLDC placement in an angiography suite using fluoroscopic guidance at the University Hospital of the Rio Grande do Norte Federal University from January 2016 to October 2017. The data collected of the total procedures performed consisted of demographic characteristics, success rates, observed complications, patient survival, and catheter patency. Results: All 12 TLDC were placed with success; there were only 2 significant periprocedure complications (major bleeding and extubation failure); 41.6% of patients presented a catheter-related first infection after 98 ± 72.1 (6-201) days, but catheter withdrawal was not necessary, mean total access patency was 315.5 (range 65 - 631) catheter-days, and catheter patency at 3, 6 and 12 months was 91 %, 75%, and 45%. Conclusion: TLDC is an option for patients with VA failure, improving survival and acting as a bridge for renal transplantation.

Resumo Introdução: O acesso vascular (AV) para hemodiálise (HD) é crucial para os pacientes portadores de doença renal crônica (DRC) estágio V. Infelizmente, com o passar dos anos, um percentual não desprezível desses enfermos evolui para falência de AV por diversos motivos, o que impossibilita a confecção de novas fístulas arteriovenosas (FAV) ou o implante de cateteres venosos centrais nos sítios de punções tradicionais. Nesse cenário, o implante de cateteres translombares para hemodiálise (CTLHD) em veia cava inferior ganha destaque como medida salvadora. Objetivos: Relatar uma série de 12 casos de implante de CTLHD, sua técnica de implante, patência e complicações. Métodos: Estudo retrospectivo que analisou 12 implantes de CTLHD por radiologista intervencionista no setor de hemodinâmica do Hospital Universitário da Universidade Federal do Rio Grande do Norte (UFRN), no período de janeiro/2016 a outubro/2017. Os dados coletados consistiram em: características demográficas da população estudada, taxa de sucesso, complicações observadas, sobrevida dos pacientes, patência do cateter e desfechos clínicos. Resultados: Todos os 12 CTLHD foram implantados e utilizados com sucesso; ocorreram apenas 2 complicações associadas ao procedimento (sangramento e falha na extubação); 41,6% dos pacientes apresentaram infecção relacionada ao cateter após 98 ± 72,1 dias (6-201 dias), mas não houve necessidade de remoção; e a patência foi de 315,5 cateteres-dia (65-631 dias). Conclusão: O CTLHD é uma opção para pacientes com falência de acesso vascular, prolongando a sobrevida dos pacientes e atuando como ponte para o transplante renal.

Translumbar hemodialysis long-term catheters: an alternative for vascular access failure.

INTRODUCTION: Vascular access (VA) in hemodialysis (HD) is essential to end-stage renal disease (ESRD) patients survival. Unfortunately, after some years in HD program, a significant number of patients may develop VA failure for many reasons. In this situation, arterial venous fistula (AVF) confection or catheters placement in traditional vascular sites (jugular, femoral or subclavian) are not feasible. In this scenario, translumbar tunneled dialysis catheter (TLDC) may be a salvage option. OBJECTIVES: To describe placement technic, complications, and patency of 12 TLDC. METHODS: A retrospective study was performed to analyze 12 TLDC placement in an angiography suite using fluoroscopic guidance at the University Hospital of the Rio Grande do Norte Federal University from January 2016 to October 2017. The data collected of the total procedures performed consisted of demographic characteristics, success rates, observed complications, patient survival, and catheter patency. RESULTS: All 12 TLDC were placed with success; there were only 2 significant periprocedure complications (major bleeding and extubation failure); 41.6% of patients presented a catheter-related first infection after 98 ± 72.1 (6-201) days, but catheter withdrawal was not necessary, mean total access patency was 315.5 (range 65 - 631) catheter-days, and catheter patency at 3, 6 and 12 months was 91 %, 75%, and 45%. CONCLUSION: TLDC is an option for patients with VA failure, improving survival and acting as a bridge for renal transplantation.