Abordaje clínico y diagnóstico de la glomerulonefritis membranoproliferativa. Reporte de caso / Clinical approach and diagnosis of membranoproliferative glomerulonephritis, case report

Resumen La glomerulonefritis membranoproliferativa es una lesión poco frecuente que abarca un grupo de patologías que comparten un patrón histológico en común y pueden originarse a partir de diversos mecanismos patogénicos. Mediante biopsias renales se ha establecido que en estas lesiones el daño renal inicial ocurre por el depósito de inmunoglobulinas que generan depósitos subendoteliales, subepiteliales y/o en la membrana basal glomerular, con lo cual el glomérulo adopta frecuentemente un aspecto lobulado. Se presenta el caso de un hombre de 48 años, quien ingresó al servicio de urgencias del Hospital de San José de Bogotá, Colombia, sin antecedentes relevantes y presentó proteinuria en rango nefrótico severo (62 gramos en 24 horas), elevación de nitrogenados y reporte de biopsia con glomerulonefritis membranoproliferativa. Se describe el enfoque clínico y diagnóstico de esta entidad.

Abstract The membranophroliferative glomerulonephritis is a rare lesion that covers a group of pathologies that share a histologic pattern, and can generate from diverse pathogenic mechanisms. Based on the findings of the kidney biopsy, starts a process to search the etiology of the lesion. The initial kidney damage occurs due to the deposit of immunoglobulins, complement elements or both in the mesangium and in the capillary endothelium, generating sub endothelial, sub epithelial, and/or glomerular basal membrane deposits, frequently adopting glomerulus a lobed aspect. We present a case of a man 48 years old admitted in the emergency of the San Jose Hospital in Bogotá, without relevant pathological background that debuts with proteinuria in severe nephrotic range (62 grams in 24 hours), nitrogenous elevation and biopsy report with membranophroliferative glomerulonephritis, we describe de clinical and diagnostic approach of this entity.

Consenso colombiano de expertos sobre recomendaciones informadas en la evidencia para la prevención, el diagnóstico y el manejo de la lesión renal aguda por SARS-CoV-2/COVID-19 / Colombian consensus of experts on recommendations informed in the evidence for the prevention, diagnosis and management of acute kidney injury by SARS-CoV-2/COVID-19

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Abstract Introduction: Acute kidney injury is a frequent complication in patients with COVID-19 and its occurrence is a potential indicator of multi-organ dysfunction and disease severity. Objective: Develop, through an expert consensus, evidence-based recommendations for the prevention, diagnosis, and management of acute kidney injury in patients with SARS CoV2 / COVID-19 infection. Materials and methods: Based on a rapid systematic review in Embase and Pubmed databases and documents from scientific societies, we made preliminary recommendations and consulted with an expert group through an online tool. Then we defined agreement after at least 70 % consensus approval. Quality evidence was evaluated according to the type of document included. The strength of the recommendations was graded as strong or weak. Results: Fifty clinical experts declared their conflict of interest; the consultation took place between May 2 and 29, 2020. The range of agreement ranged from 75.5 % to 100 %. Recommendations for prevention, diagnosis and management of acute kidney injury in patients with SARS CoV2 infection are presented. Conclusions: Although the good quality information available regarding acute kidney injury in patients with COVID-19 is scarce, the recommendations of clinical experts will guide clinical decision-making and strategies around patients with this complication, guaranteeing care focused on the people, with high quality standards, and the generation of safety, health and wellness policies for multidisciplinary care teams.