Controversy on the CONVINCE study findings: the PRO take / Controvérsia sobre os achados do estudo CONVINCE: a perspectiva PRO

ABSTRACT The CONVINCE study, recently published in the New England Journal of Medicine, reveals a groundbreaking 23% reduction in the relative risk of all-cause mortality among end-stage kidney patients undergoing high convective volume hemodiafiltration. This significant finding challenges the conventional use of high-flux hemodialysis and offers hope for improving outcomes in chronic kidney disease patients. While some controversies surround the study's findings, including concerns about generalizability and the causes of death, it is essential to acknowledge the study's design and its main outcomes. The CONVINCE study, part of the HORIZON 2020 project, enrolled 1360 patients and demonstrated the superiority of hemodiafiltration in reducing all-cause mortality overall, as well as in specific patient subgroups (elderly, short vintage, non-diabetic, and those without cardiac issues). Interestingly, it was shown that hemodiafiltration had a protective effect against infection, including COVID-19. Future research will address sustainability, dose scaling effects, identification of subgroups especially likely to benefit and cost-effectiveness. However, for now, the findings strongly support a broader adoption of hemodiafiltration in renal replacement therapy, marking a significant advancement in the field.

RESUMO O estudo CONVINCE, publicado recentemente no New England Journal of Medicine, revela uma redução inovadora de 23% no risco relativo de mortalidade por todas as causas entre pacientes renais em estágio terminal submetidos à hemodiafiltração de alto volume de convecção. Esse achado significativo desafia o uso convencional da hemodiálise de alto fluxo e oferece esperança de melhoria dos desfechos em pacientes com doença renal crônica. Embora algumas controvérsias cerquem os achados do estudo, incluindo preocupações sobre a generalização e as causas de óbito, é essencial reconhecer o desenho do estudo e seus principais desfechos. O estudo CONVINCE, parte do projeto HORIZON 2020, inscreveu 1.360 pacientes e demonstrou a superioridade da hemodiafiltração na redução da mortalidade por todas as causas em geral, bem como em subgrupos específicos de pacientes (idosos, HD de curta duração, não diabéticos e aqueles sem problemas cardíacos). Curiosamente, demonstrou-se que a hemodiafiltração teve um efeito protetor contra infecções, incluindo a COVID-19. Pesquisas futuras abordarão sustentabilidade, efeitos de escalonamento da dose, identificação de subgrupos especialmente propensos a se beneficiar e a relação custo-benefício. No entanto, por ora, os achados apoiam fortemente uma adoção mais ampla da hemodiafiltração na terapia renal substitutiva, marcando um avanço significativo na área.

Clinical management strategies for recipients with renal graft loss / 器官移植

With the maturity of kidney transplantation, introduction of new immunosuppressive drugs and improvement of immunosuppressive regimen, the short-term survival rate of kidney transplant recipients has been significantly improved, whereas the long-term survival rate has not been significantly elevated. Kidney transplant recipients may have the risk of renal graft loss. Clinical management after renal graft loss is complicated, including the adjustment of immunosuppressive drugs, management of renal graft and selection of subsequent renal replacement therapy. These management procedures directly affect clinical prognosis of patients with renal graft loss. Nevertheless, relevant guidelines or consensuses are still lacking. Clinical management of patients after renal graft loss highly depend upon clinicians’ experience. In this article, the adjustment of immunosuppressive drugs, management of renal graft and selection of subsequent renal replacement therapy were reviewed, aiming to provide reference for prolonging the survival and improving the quality of life of these patients.

Isquemia de mão de pacientes em terapia renal substitutiva: avaliação por termografia / Isquemia de mano de pacientes en terapia de reemplazo renal: evaluación por termografía / Hand ischemia in patients undergoing renal replacement therapy: assessment by thermography

Resumo Objetivo Avaliar a presença de isquemia na porção distal das mãos dos membros superiores com Fistula Arteriovenosa (FAV) de pacientes em Terapia Renal Substitutiva (TRS) através da termografia por infravermelho. Método Amostra composta por 15 pacientes em TRS por hemodiálise por meio de FAV que responderam um questionário elaborado pelos próprios autores com as seguintes variáveis: dados sociodemográficos, diagnóstico, sinais vitais e dados sobre a FAV. Para obtenção dos termogramas das mãos com e sem FAV foi utilizado uma câmera termográfica por infravermelho C5, FLIR Systems, fixada a 50 cm das mãos dos participantes, privilegiando o enquadramento bilateral enquadrando ambas as mãos. Os dados obtidos foram organizados em planilha de Excel 2011® e comparados estatisticamente utilizando o programa Microcal Origin 6.0, para avaliar se existia diferença entre as médias de temperatura. Resultados Com relação as variáveis sociodemográficas, o gênero masculino foi o predominante, faixa etária com média de 45 anos, ensino fundamental (incompleto/completo), casados e provenientes de outros municípios. A termografia demonstrou que há diferença de temperatura entre as mãos com FAV e sem FAV, com variação na temperatura de 1,78°C (± DP 1,99°C), menor para as mãos com FAV. Conclusão A análise da distribuição do sangue das mãos por meio da termografia pode fornecer evidências sobre a microcirculação periférica e orientar o diagnóstico precoce e o tratamento da isquemia induzida por FAV em indivíduos em TRS, como ferramenta inovadora de diagnóstico auxiliar das complicações dos acessos venosos de pacientes em hemodiálise.

Resumen Objetivo Evaluar la presencia de isquemia en la parte distal de las manos de los miembros superiores con fístula arteriovenosa (FAV) de pacientes en terapia de reemplazo renal (TRR) a través de la termografía infrarroja. Métodos Muestra compuesta por 15 pacientes en TRR por hemodiálisis mediante FAV que respondieron un cuestionario elaborado por los propios autores con las siguientes variables: datos sociodemográficos, diagnóstico, signos vitales y datos sobre la FAV. Para obtener los termogramas de las manos con y sin FAV, se utilizó una cámara termográfica infrarroja C5, FLIR Systems, ubicada a 50 cm de las manos de los participantes, favoreciendo el encuadramiento bilateral y encuadrando ambas manos. Los datos obtenidos se organizaron en una planilla de Excel 2011® y se compararon estadísticamente con el programa Microcal Origin 6.0, para evaluar si había diferencia entre los promedios de temperatura. Resultados Con relación a las variables sociodemográficas, el género masculino fue predominante, grupo de edad promedio de 45 años, educación primaria (incompleta/completa), casados y provenientes de otros municipios. La termografía demostró que hay diferencia de temperatura entre las manos con FAV y sin FAV, con una variación de temperatura de 1,78°C (± DP 1,99°C), menor en las manos con FAV. Conclusión El análisis de la distribución de la sangre de las manos por medio de termografía puede ofrecer evidencias sobre la microcirculación periférica y guiar el diagnóstico temprano y el tratamiento de la isquemia inducida por FAV en individuos en TRR, como una herramienta innovadora de diagnóstico auxiliar de las complicaciones de los accesos vasculares de pacientes en hemodiálisis.

Abstract Objective To assess the presence of ischemia in the distal portion of the hands of the upper limbs with arteriovenous fistula (AVF) in patients undergoing renal replacement therapy (RRT) using infrared thermography. Method The sample consisted of 15 patients on RRT via hemodialysis using an AVF who answered a questionnaire prepared by the authors themselves with sociodemographic data, diagnosis, vital signs and data on AVF. To obtain thermograms of hands with and without AVF, a C5 infrared thermographic camera, FLIR Systems, was used, fixed 50 cm from participants' hands, favoring bilateral framing of both hands. The data obtained were organized in an Excel 2011® spreadsheet and statistically compared using the Microcal Origin 6.0 program to assess whether there was a difference between temperature averages. Results Regarding sociodemographic variables, males were predominant, with a mean age of 45 years, (incomplete/complete) elementary school, married and from other municipalities. Thermography demonstrated that there is a difference in temperature between hands with AVF and without AVF, with a temperature variation of 1.78°C (± SD 1.99°C), lower for hands with AVF. Conclusion The analysis of hand blood distribution using thermography can provide evidence on peripheral microcirculation and guide the early diagnosis and treatment of AVF-induced ischemia in individuals undergoing RRT as an innovative auxiliary diagnostic tool for complications of venous access in hemodialysis patients.

Awareness of stroke among patients with chronic kidney disease on hemodialysis: a cross-sectional study

ABSTRACT BACKGROUND: Stroke is a major cause of mortality worldwide. Renal dysfunction is an important risk factor for stroke. Brazilian studies on stroke knowledge are generally population based. Studies stratifying stroke knowledge according to comorbidities are rare. Scientific data are essential to guide the awareness of stroke. OBJECTIVE: To assess stroke knowledge in patients with chronic kidney disease (CKD) on hemodialysis. DESIGN AND SETTING: Cross-sectional analytical study of patients with CKD on hemodialysis in north-eastern Brazil. METHODS: A self-administered questionnaire survey on stroke awareness was administered to patients with CKD on hemodialysis between April and November 2022. The chi-square test and other descriptive statistics were used. Univariate and multivariate analyses were performed using logistic regression. RESULTS: A total of 197 patients were included in the analysis. The Brazilian acronym for stroke was used by 53.5% of the participants. Less than 10.0% of the sample showed optimal decision-making ability regarding stroke. Of the participants, 29.9% knew at least one risk factor and one symptom; however, this was considered as having below the minimum capacity because they did not know the emergency service call number. In the analysis adjusted for income and education, females (odds ratio [OR], 0.40%; 95% confidence interval [CI], 0.20-0.82), older patients (OR, 0.24%; 95% CI, 0.09-0.63) and having at most one comorbidity (OR, 0.48%; 95% CI, 0.23-0.98) were factors for lower levels of knowledge or ideal decision-making capacity against stroke. CONCLUSIONS: Patients on hemodialysis, especially women and older people, have little knowledge about stroke.

Preemptive kidney transplantation: why, when, and how? / Transplante renal preemptivo: por que, quando e como?

ABSTRACT Among renal replacement therapies, preemptive kidney transplantation (PKT) presents the best clinical, social, and economic results. However, it is still infrequently chosen as first therapy for patients with irreversible kidney failure. Initiatives in different parts of the world were developed to identify the reasons why PKT is still not widely used and to facilitate the access of patients with end-stage kidney disease to the advantages associated with it. This article addresses the main advantages and difficulties of PKT and discusses when it should be indicated and how to prepare potential recipients for PKT.

Resumo Entre as terapias renais substitutivas, o transplante renal preemptivo (TRP) apresenta os melhores resultados clínicos, sociais e econômicos. No entanto, ainda é raramente escolhido como primeira terapia para pacientes com falência renal irreversível. Foram desenvolvidas iniciativas em diferentes partes do mundo para identificar as razões pelas quais o TRP ainda não é amplamente utilizado e para facilitar o acesso de pacientes com doença renal em estágio terminal às vantagens associadas ao mesmo. Este artigo aborda as principais vantagens e dificuldades do TRP e discute quando ele deve ser indicado e como preparar potenciais receptores para o TRP.

Accuracy of the persistent AKI risk index in predicting acute kidney injury in patients admitted to the intensive care unit for acute respiratory failure / Acurácia do persistent AKI risk index na predição de injúria renal aguda em pacientes admitidos na unidade de terapia intensiva por insuficiência respiratória aguda

ABSTRACT Objective: To evaluate the accuracy of the persistent AKI risk index (PARI) in predicting acute kidney injury within 72 hours after admission to the intensive care unit, persistent acute kidney injury, renal replacement therapy, and death within 7 days in patients hospitalized due to acute respiratory failure. Methods: This study was done in a cohort of diagnoses of consecutive adult patients admitted to the intensive care unit of eight hospitals in Curitiba, Brazil, between March and September 2020 due to acute respiratory failure secondary to suspected COVID-19. The COVID-19 diagnosis was confirmed or refuted by RT-PCR for the detection of SARS-CoV-2. The ability of PARI to predict acute kidney injury at 72 hours, persistent acute kidney injury, renal replacement therapy, and death within 7 days was analyzed by ROC curves in comparison to delta creatinine, SOFA, and APACHE II. Results: Of the 1,001 patients in the cohort, 538 were included in the analysis. The mean age was 62 ± 17 years, 54.8% were men, and the median APACHE II score was 12. At admission, the median SOFA score was 3, and 83.3% had no renal dysfunction. After admission to the intensive care unit, 17.1% had acute kidney injury within 72 hours, and through 7 days, 19.5% had persistent acute kidney injury, 5% underwent renal replacement therapy, and 17.1% died. The PARI had an area under the ROC curve of 0.75 (0.696 - 0.807) for the prediction of acute kidney injury at 72 hours, 0.71 (0.613 - 0.807) for renal replacement therapy, and 0.64 (0.565 - 0.710) for death. Conclusion: The PARI has acceptable accuracy in predicting acute kidney injury within 72 hours and renal replacement therapy within 7 days of admission to the intensive care unit, but it is not significantly better than the other scores.

RESUMO Objetivo: Avaliar a acurácia do persistent AKI risk index (PARI) na predição de injúria renal aguda em 72 horas após a admissão em unidade de terapia intensiva, injúria renal aguda persistente, terapia de substituição renal e óbito, em até 7 dias em pacientes internados por insuficiência respiratória aguda. Métodos: Estudo de método-diagnóstico com base em coorte de inclusão consecutiva de pacientes adultos internados em unidade de terapia intensiva de oito hospitais de Curitiba (PR) entre março e setembro de 2020, por insuficiência respiratória aguda secundária à suspeita de COVID-19, com confirmação ou refutação diagnóstica dada pelo resultado de RT-PCR para detecção do SARS-CoV-2. O potencial preditor do PARI foi analisado por curva ROC em relação a delta creatinina, SOFA e APACHE II, para os desfechos injúria renal aguda em 72 horas; injúria renal aguda persistente; terapia de substituição renal e mortalidade em até 7 dias. Resultados: Dos 1.001 pacientes da coorte, 538 foram incluídos na análise. A média de idade foi de 62 ± 17 anos, 54,8% eram homens e o APACHE II mediano foi de 12. Na admissão, o SOFA mediano era 3, e 83,3% não apresentavam disfunção renal. Após admissão na unidade de terapia intensiva, 17,1% apresentaram injúria renal aguda em 72 horas e, até o sétimo dia, 19,5% apresentaram injúria renal aguda persistente, 5% realizaram terapia de substituição renal, e 17,1% foram a óbito. O PARI apresentou área sob a curva ROC de 0,75 (0,696 - 0,807) para predição de injúria renal aguda em 72 horas, 0,71 (0,613 - 0,807) para terapia de substituição renal e 0,64 (0,565 - 0,710) para mortalidade. Conclusão: O PARI tem acurácia aceitável na predição de injúria renal aguda em 72 horas e terapia de substituição renal em até 7 dias da admissão na unidade de terapia intensiva, porém sem diferença significativa dos demais escores.

Frailty syndrome and end-stage kidney disease outcomes at a Latin American dialysis center

Introduction. Frailty syndrome generates a high risk of adverse outcomes and mortality, and its prevalence is elevated in patients with end-stage kidney disease. Few studies have reported the prevalence and outcomes of frailty in populations from less developed countries. Objective. To identify the clinical outcomes and factors associated with the frailty syndrome in patients with stage five chronic kidney disease who started renal replacement therapy - both hemodialysis and peritoneal dialysis- in a dialysis center in Bucaramanga, Colombia. Materials and methods. This was a prospective study of patients with end-stage kidney disease who initiated dialysis at a center in Colombia and had a twelve-month follow-up. Results. The overall frailty prevalence was 50.47% and two out of three patients older than 65 years had the syndrome. We found significantly higher followup mortality among patients with frailty: odds ratio of 2.95 (CI: 1.07- 8.13; p=0.036) in unadjusted analysis. Conclusions. Literature shows that compared to developed nations, Latin American adults are facing a higher prevalence of chronic diseases, and frailty syndrome is increasing. In this study, according to the FRAIL scale, having a frailty syndrome predicts a higher mortality; hypoalbuminemia and low creatinine levels at the beginning of dialysis could act as predictors of its diagnosis.

Introducción. El síndrome de fragilidad implica un alto riesgo de desenlaces adversos y mortalidad, y tiene una prevalencia elevada en pacientes con enfermedad renal en etapa terminal. Hay pocos estudios que investiguen la prevalencia y los desenlaces de este síndrome de fragilidad en las poblaciones de los países en desarrollo. Objetivo. Identificar los desenlaces clínicos y los factores asociados al síndrome de fragilidad en los pacientes con enfermedad renal crónica en estadio cinco que inician terapia de reemplazo renal -con hemodiálisis o diálisis peritoneal- en un centro de diálisis de Bucaramanga, Colombia. Materiales y métodos. Se trató de un estudio prospectivo de pacientes con enfermedad renal en etapa terminal que iniciaron diálisis en un centro de Colombia y a quienes se les hizo seguimiento durante doce meses. Resultados. La prevalencia global del síndrome de fragilidad fue del 50,47 % y dos de cada tres pacientes mayores de 65 años lo presentaban. Se encontró una mortalidad significativamente mayor entre los pacientes con síndrome de fragilidad: razón de probabilidad de 2,95 (IC:1,07-8,13; p=0,036) en el análisis no ajustado. Conclusiones. La literatura muestra que, en comparación con los países desarrollados, los adultos latinoamericanos presentan una mayor prevalencia de enfermedades crónicas y un aumento progresivo del síndrome de fragilidad. En este estudio, la fragilidad -según la escala FRAIL- predijo una mayor mortalidad. Además, la hipoalbuminemia y los niveles bajos de creatinina al inicio de la diálisis podrían actuar como elementos predictores de su diagnóstico.

Clinical-epidemiological characterization of patients submitted to hemodialysis according to the national kidney foundation, the kidney disease outcomes quality initiative ­ KDOQI in a hemodialysis reference center in the metropolitan region of São Paulo, Brazil

Introduction: hemodialysis is a treatment that helps in the survival of patients with renal failure, through an established cardiopulmonary bypass to carry out blood filtration, as a result, there is a need for a feasible, lasting and effective vascular access. There are two types of vascular access, arteriovenous fistulas, using autogenous veins or prostheses, and venous catheters. The indications for choosing the type of vascular access are related to the characteristics and restriction of use of each patient.Objective: to analyze the epidemiological, demographic and clinical profile of patients undergoing hemodialysis in two reference services in the metropolitan region of São Paulo, Brazil, and compare the clinical-surgical processes with those defined by the Kidney Guidelines disease Outcomes Quality Initiative (KDOQI).Methods: data were collected in two public hospitals, with patients undergoing hemodialysis, through registration forms and medical records, from August to December 2016. The volunteers were informed about the procedures and objectives of the study and, after agreeing, they signed a consent form. The variables age, gender, weight, height, body mass index, hemodialysis time, types of accesses already used , complications related to the accesses and underlying disease were analyzed. Patients with chronic renal failure undergoing hemodialysis of both genders, with no age restriction, were included. Patients not able to perform one of the techniques, arteriovenous fistula or catheter, were excluded . The collected data were compared with the Kidney guidelines disease Outcomes Quality Initiative (KDOQI).Results: a total of 252 individuals were included, of which 182 are patients undergoing reference hospital treatment in the city of São Bernardo do Campo, SP and 70 patients at the State University Hospital Mário Covas, a State reference in the clinical management of patients undergoing hemodialysis care.Conclusion: chronic kidney disease is highly prevalent with progression to end-stage chronic kidney failure (dialysis). The definition of the epidemiological profile of the population undergoing treatment, as well as the journey of venous accesses for hemodialysis (catheters and fistulas), are fundamental for the multidisciplinary team's learning curve about complications throughout the course of the disease/treatment. Furthermore, the clinical-surgical management of this population is in line with the guidelines of the National Kidney Foundation. The treatment performed in these hemodialysis centers is efficient and in line with what the KDOQI recommends.

Características del síndrome urémico hemolítico en pacientes de un hospital pediátrico de Perú, 2010-2020 / Characteristics of hemolytic uremic syndrome in patients from a pediatric hospital in Peru, 2010-2020

RESUMEN El propósito del presente estudio fue describir las características clínicas, epidemiológicas, laboratoriales, tratamiento y seguimiento de pacientes con síndrome urémico hemolítico (SUH). Se revisaron las historias clínicas de los pacientes con SUH hospitalizados en el Instituto Nacional de Salud del Niño-Breña (INSN-B) de Lima, Perú. Se incluyeron a 83 pacientes. La mediana de edad fue de 22 meses. El 71,1% (n=59) registró uso previo de antibióticos. El 86,8% (n=72) tuvieron oligoanuria y el 74,6% (n=62) diarrea. Cinco cultivos fueron positivos (dos Escherichia coli enterohemorrágica). Cuarenta y nueve (59%) requirieron terapia de reemplazo renal. Ningún paciente falleció durante la hospitalización. Al año del seguimiento, siete pacientes presentaron nefropatía pos-SUH. En conclusión, en el INSN-B, la mediana de edad fue similar que años anteriores y hubo una mayor frecuencia de oligoanuria y terapia de reemplazo renal en comparación con reportes previos.

ABSTRACT This study aimed to describe the clinical-epidemiological, laboratory, treatment, and follow-up characteristics of patients with hemolytic uremic syndrome (HUS). The medical records of patients with HUS hospitalized at the Instituto Nacional de Salud del Niño-Breña (INSN-B) (Lima, Peru) were reviewed. We evaluated 83 patients. The median age was 22 months (interquartile range: 14 to 30 months). Of the sample, 71.1% (59) registered previous use of antibiotics. Seventy-two (86.8%) had oligoanuria and 62 (74.6%) had diarrhea. Five cultures were positive (two enterohaemorrhagic Escherichia coli). Forty-nine (59%) required renal replacement therapy. No patient died during hospitalization. At one year of follow-up, seven patients developed post-HUS nephropathy. In conclusion, in INSN-B, the median age was like previous years and there was a higher frequency of oligoanuria, and renal replacement therapy compared to previous reports.

One-year impact of COVID-19 pandemic on renal replacement therapy and kidney transplantation in a tertiary center in Southern Brazil / Impacto de um ano da Pandemia COVID 19 na terapia renal substitutiva e no transplante renal em centro terciário no Sul do Brasil

ABSTRACT Introduction: Patients on renal replacement therapy (RRT) and kidney transplant recipients (KTR) present multiple factors that may increase the risk of death from coronavirus disease 2019 (COVID-19). This study aimed to evaluate the incidence and impact of COVID-19 in RRT patients and KTRs. Methods: Between March 2020 and February 2021, we monitored the RRT population of thirteen dialysis facilities that refer patients for transplantation to our center, a tertiary hospital in Southern Brazil. In the same period, we also monitor COVID-19 incidence and mortality in our KTR population. Demographical, clinical, and COVID-19-related information were analyzed. Results: We evaluated 1545 patients in the dialysis centers, of which 267 (17.4%) were infected by COVID-19 and 53 (19.9%) died. Among 275 patients on the kidney transplant waiting list, 63 patients (22.9%) were infected and seven (11.1%) died. COVID-19 was the leading cause of death (29.2%) among patients on the waiting list. Within the population of 1360 KTR, 134 (9.85%) were diagnosed with COVID-19 and 20 (14.9%) died. The number of kidney transplants decreased by 56.7% compared with the same period in the previous twelve months. Conclusion: In the study period, patients on RRT and KTRs presented a high incidence of COVID-19 and high COVID-19-related lethality. The impact on the patients on the transplant waiting list was less pronounced. The lethality rate observed in both cohorts seems to be related to age, comorbidities, and disease severity.

Resumo Introdução: Pacientes em terapia renal substitutiva (TRS) e receptores de transplante renal (RTR) apresentam múltiplos fatores que podem aumentar o risco de óbito por doença do coronavírus 2019 (COVID-19). Este estudo teve como objetivo avaliar incidência e impacto da COVID-19 em pacientes em TRS e RTR. Métodos: Entre Março de 2020 e Fevereiro de 2021, monitoramos a população em TRS de treze unidades de diálise que encaminham pacientes para transplante ao nosso centro, um hospital terciário no Sul do Brasil. No mesmo período, também monitoramos a incidência e mortalidade da COVID-19 em nossa população de RTR. Foram analisadas informações demográficas, clínicas e relacionadas à COVID-19. Resultados: Avaliamos 1545 pacientes nos centros de diálise, dos quais 267 (17,4%) foram infectados pela COVID-19 e 53 (19,9%) foram a óbito. Entre 275 pacientes na lista de espera para transplante renal, 63 (22,9%) foram infectados e sete (11,1%) foram a óbito. COVID-19 foi a principal causa de óbito (29,2%) entre pacientes na lista de espera. Dentre a população de 1360 RTR, 134 (9,85%) foram diagnosticados com COVID-19 e 20 (14,9%) foram a óbito. O número de transplantes renais diminuiu em 56,7% comparado ao mesmo período nos doze meses anteriores. Conclusão: No período do estudo, pacientes em TRS e RTR apresentaram alta incidência de COVID-19 e alta letalidade relacionada à COVID-19. O impacto nos pacientes na lista de espera para transplante foi menos pronunciado. A taxa de letalidade observada em ambas as coortes parece estar relacionada à idade, comorbidades e gravidade da doença.

One-year mortality of hematopoietic stem cell recipients admitted to an intensive care unit in a dedicated Brazilian cancer center: a retrospective cohort study

ABSTRACT BACKGROUND: Hematopoietic stem cell transplantation (HSCT) recipients requiring intensive care unit (ICU) admission early after transplantation have a poor prognosis. However, many studies have only focused on allogeneic HSCT recipients. OBJECTIVES: To describe the characteristics of HSCT recipients admitted to the ICU shortly after transplantation and assess differences in 1-year mortality between autologous and allogeneic HSCT recipients. DESIGN AND SETTING: A single-center retrospective cohort study in a cancer center in Brazil. METHODS: We included all consecutive patients who underwent HSCT less than a year before ICU admission between 2009 and 2018. We collected clinical and demographic data and assessed the 1-year mortality of all patients. The effect of allogeneic HSCT compared with autologous HSCT on 1-year mortality risk was evaluated in an unadjusted model and an adjusted Cox proportional hazard model for age and Sequential Organ Failure Assessment (SOFA) at admission. RESULTS: Of the 942 patients who underwent HSCT during the study period, 83 (8.8%) were included in the study (autologous HSCT = 57 [68.7%], allogeneic HSCT = 26 [31.3%]). At 1 year after ICU admission, 21 (36.8%) and 18 (69.2%) patients who underwent autologous and allogeneic HSCT, respectively, had died. Allogeneic HSCT was associated with increased 1-year mortality (unadjusted hazard ratio, HR = 2.79 [confidence interval, CI, 95%, 1.48-5.26]; adjusted HR = 2.62 [CI 95%, 1.29-5.31]). CONCLUSION: Allogeneic HSCT recipients admitted to the ICU had higher short- and long-term mortality rates than autologous HSCT recipients, even after adjusting for age and severity at ICU admission.

Translation, cross-cultural adaptation and validation of the EPOCH-RRT questionnaire "Empowering Patients On Choices For Renal Replacement Therapy" for the Brazilian context / Tradução, adaptação transcultural e validação do questionário EPOCH-RRT "Empowering Patients On Choices For Renal Replacement Therapy" para o contexto brasileiro

Abstract Introduction: Chronic kidney disease (CKD) is a global public health problem. In Brazil, the incidence and prevalence rates of dialysis CKD progressively increase, but the transition process is a challenge for patients and caregivers in coping with the disease. Dialysis urgency, lack of planned access or prior knowledge of treatment is a reality for most. Guidelines recommend that treatment options should include the conscious preference of a fully informed patient. However, pre-dialysis educational information is an exception, leading to a large number of unplanned initial dialysis. The original study "Empowering Patients on Choices for Renal Replacement Therapy" (EPOCH-RRT) aimed to identify patient priorities and gaps in shared decision-making about dialysis, using structured interviews with questions about demographics, clinical history and patients' perception of their health. The goal of this study was to carry out the translation, cross-cultural adaptation and validation of the questionnaires used in the EPOCH-RRT Study for the Brazilian context. Method: This is a methodological study that consisted of the initial translation, synthesis of the translations, back translation, review by a committee of experts, pre-test and evaluation of the psychometric properties of the instrument. All ethical precepts were followed. Results: The questionnaires were translated, adapted and validated for the Brazilian context. Additionally, it was applied to 84 chronic renal patients on hemodialysis, peritoneal dialysis and outpatients. Discussion: There is a lack of an educational-therapeutic approach aimed at patients with CKD, and the EPOCH-RRT questionnaire can be a tool for Brazilian dialysis services to change this paradigm.

Resumo Introdução: A doença renal crônica (DRC) é um problema de saúde pública mundial. No Brasil, as taxas de incidência e prevalência da DRC dialítica aumentam progressivamente, mas o processo de transição apresenta-se como desafio para pacientes e cuidadores no enfrentamento da doença. Urgência dialítica, ausência de acesso planejado ou conhecimento prévio do tratamento é uma realidade para a maioria. Diretrizes recomendam que opções de tratamento devam incluir a preferência consciente de um paciente totalmente informado. No entanto, informação educacional pré-diálise é exceção, acarretando grande número de diálises iniciais não planejadas. O estudo original "Empowering Patients on Choices for Renal Replacement Therapy" (EPOCH-RRT) teve por objetivo identificar as prioridades do paciente e as lacunas na tomada de decisões compartilhadas sobre a diálise, utilizando entrevistas estruturadas, com questões sobre dados demográficos, história clínica e percepção dos pacientes sobre sua saúde. O objetivo desta pesquisa foi realizar a tradução, adaptação transcultural e validação dos questionários utilizados no Estudo EPOCH-RRT para o contexto brasileiro. Método: Trata-se de estudo metodológico que consistiu na tradução inicial, síntese das traduções, retro tradução, revisão por um comitê de especialistas, pré-teste e avaliação das propriedades psicométricas do instrumento. Todos os preceitos éticos foram seguidos. Resultados: Os questionários foram traduzidos, adaptados e validados para o contexto brasileiro. Adicionalmente, foi aplicado em 84 pacientes renais crônicos em hemodiálise, diálise peritoneal e ambulatoriais. Discussão: Há carência de enfoque educativo-terapêutico dirigido aos pacientes com DRC, e o questionário EPOCH-RRT pode ser uma ferramenta para serviços de diálise brasileiros mudarem esse paradigma.

Infectious and mechanical complications in planned-start vs. urgent-start peritoneal dialysis: a cohort study / Complicações infecciosas e mecânicas relacionadas à diálise peritoneal de início planejado vs. não planejado: um estudo de coorte

Abstract Background: Few studies have compared the infectious and mechanical complications seen in planned-start and urgent-start peritoneal dialysis (PD) patients. Objectives: To compare the incidence and etiology of mechanical and infectious complications in patients offered planned- and urgent-start PD and assess potential differences in patient survival and time on PD. Methods: This retrospective cohort study included patients with chronic kidney disease on planned- and urgent-start PD seen from 2014 to 2020 and compared them for mechanical and infectious complications, clinical outcome, death rates, and need to switch to hemodialysis. Results: Ninety-nine patients on planned-start PD and 206 on urgent-start PD were included. Incidence of exit-site infection (18.9 vs. 17.17%, p=0.71) and peritonitis (24.27 vs. 27.27%, p=0.57) were similar between patients, while pathogens causing peritonitis were different, although non-fermenting Gram-negative bacilli were more commonly seen in the planned-start PD group. Leakage as a mechanical complication and hospitalization were more common among patients needing urgent-start PD (10.68 vs. 2.02%, p=0.0085 and 35.44 vs. 17.17%, p=0.0011, respectively). Patient survival was similar between groups. Cox regression found an association between death and age (HR=1.051, 95% CI 1.026-1.07, p=0.0001) and albumin (HR=0.66, 95% CI 0.501-0.893, p=0.0064), and between peritonitis and a diagnosis of diabetes (HR=2.016, 95% CI 1.25-3.25, p=0.004). Conclusion: Patient survival and time on PD were similar between the planned- and urgent-start PD groups, while leakage was more frequently seen in the urgent-start PD group. Death was associated with lower albumin levels and older age, while peritonitis was associated with diabetes.

Resumo Antecedentes: Poucos estudos compararam as complicações infecciosas e mecânicas relacionadas à diálise peritoneal (DP) de início planejado e não planejado. Objetivos: Comparar a incidência e etiologia das complicações mecânicas e infecciosas associadas à DP tanto de início planejado quanto não planejado e avaliar comparativamente a sobrevida da técnica e dos pacientes. Métodos: Estudo de coorte retrospectivo que avaliou pacientes com doença renal crônica em DP não planejada e planejada de 2014 a 2020 quanto às complicações mecânicas e infecciosas e desfechos clínicos óbito ou mudança para hemodiálise. Resultados: Foram avaliados 99 pacientes em DP planejada e 206 em DP não planejada. Foram semelhantes quanto à incidência de Infecção do Orifício de Saída (18,9x17,17%, p=0,71), peritonite (24,27x27,27%, p=0,57) e diferentes quanto aos agentes etiológicos das peritonites, sendo os bacilos Gram-negativos não fermentadores mais frequentes no grupo planejado. Diferiram quanto à complicação mecânica extravasamento e internação, ambas mais frequentes no grupo não planejado (10,68 x 2,02%, p=0,0085 e 35,44 x 17,17%, p=0,0011, respectivamente). Semelhantes quanto à sobrevida dos pacientes e da técnica. À regressão de Cox, associou ao óbito a idade (HR=1,051, IC 95% 1,026-1,07, p=0,0001) e a albumina (HR=0,66, IC 95% 0,501-0,893, p=0,0064), e à peritonite a presença de diabetes (HR=2,016, IC 95% 1,25-3,25, p=0,004). Conclusão: A sobrevida da técnica e dos pacientes foi semelhante nos grupos DP planejada e não planejada, enquanto o extravasamento foi mais frequente no grupo de início não planejado. Associaram-se ao óbito menores valores de albumina e maior idade, e à peritonite, o diabetes.

Prevalence and predisposing factors for fatigue in patients with chronic renal disease undergoing hemodialysis: a cross-sectional study

ABSTRACT BACKGROUND: Patients with chronic renal disease and undergoing hemodialysis are at a high risk for developing several complications. Fatigue is a common, troubling symptom that affects such patients and can contribute to unfavorable outcomes and high mortality. OBJECTIVE: This cross-sectional study aimed to evaluate the prevalence of fatigue in Brazilian patients with chronic kidney disease undergoing hemodialysis and determine the predisposing factors for fatigue. DESIGN AND SETTING: An observational, cross-sectional, descriptive study was conducted in two renal replacement therapy centers in the Greater ABC region of São Paulo. METHODS: This study included 95 patients undergoing dialysis who were consecutively treated at two Brazilian renal replacement therapy centers between September 2019 and February 2020. The Chalder questionnaire was used to evaluate fatigue. Clinical, sociodemographic, and laboratory data of the patients were recorded, and the Short Form 36 Health Survey, Pittsburgh Sleep Quality Index, and Beck Depression Inventory were administered. RESULTS: The prevalence of fatigue in patients undergoing hemodialysis was 51.6%. Fatigue was independently associated with lower quality of life in terms of physical and general health. Patients with fatigue had a higher incidence of depression (65.9% vs. 34.1%, P = 0.001) and worse sleep quality (59.1% vs. 49.9%; P = 0.027) than those without fatigue. CONCLUSION: Prevalence of fatigue is high in patients undergoing hemodialysis and is directly related to physical and general health.

A retrospective analysis: the outcome of renal replacement therapies in critically ill children

SUMMARY OBJECTIVE: A few pediatric studies were present which focused on renal replacement therapy used for critically ill children. This research aimed to determine the ratio of utilization of intermittent hemodialysis, continuous renal replacement therapy, and peritoneal dialysis, and to study the properties and outcomes of critically ill pediatric patients who underwent renal replacement therapy. METHODS: Critically ill children admitted to the intensive care unit and received renal replacement therapy from February 2020 to May 2022 were included. The children were divided into three groups: hemodialysis, continuous renal replacement therapy, and peritoneal dialysis. RESULTS: A total of 37 patients (22 boys and 15 girls) who received renal replacement therapy met the criteria for this study. Continuous renal replacement therapy was used in 43%, hemodialysis in 38%, and peritoneal dialysis in 19%. In all, 28 (73%) children survived and 9 (27%) died in intensive care unit. The mean systolic blood pressure was significantly lower among children who received continuous renal replacement therapy (p<0.001). The need for inotropic medications and a higher PRISM III score were found to be the greatest indicators of mortality. CONCLUSION: The outcome of children receiving renal replacement therapy seems to be related to their needs for vasoactive drugs and the severity of the underlying disease in the continuous renal replacement therapy group relative to the other groups.

Terminologia especializada de enfermagem para pacientes renais crônicos em hemodiálise / Terminología de enfermería especializada para pacientes renales crónicos en hemodiálisis / Specialized nursing terminology for chronic kidney patients on hemodialysis

Resumo Objetivos identificar os termos que representam as necessidades humanas afetadas no paciente renal crônico em hemodiálise; e realizar o mapeamento cruzado destes termos com os já existentes na Classificação Internacional para a Prática de Enfermagem. Método estudo descritivo com abordagem quantitativa, realizado entre os meses de fevereiro a dezembro de 2021, período no qual foi elaborada uma revisão integrativa da literatura para levantamento dos termos que representam as necessidades humanas afetadas no paciente renal crônico em hemodiálise; em seguida, procedeu-se ao mapeamento cruzado destes termos identificados com os termos da CIPE® versão 2019/2020. Resultados foram identificados 1.946 termos extraídos dos artigos que fizeram parte da revisão integrativa. Depois do processo de normalização e uniformização, foram excluídos 689 termos, resultando na subsequente composição de 1.257 termos, os quais foram mapeados com os termos da Classificação Internacional para a Prática de Enfermagem versão 2019/2020. Ao final, o banco de termos ficou constituído por 626 termos constantes e 631 termos não constantes. Conclusão e implicação para a prática foram identificados os termos relevantes para a prática de enfermagem na assistência aos pacientes renais crônicos em hemodiálise. Os termos serão subsídios para auxiliar o enfermeiro na promoção de uma assistência sistematizada, utilizando-se de uma prática baseada em evidências.

Resumen Objetivo identificar los términos que representan las necesidades humanas afectadas en pacientes con insuficiencia renal crónica en hemodiálisis; y cruzar estos términos con los ya existentes en la Clasificación Internacional para la Práctica de Enfermería. Método estudio descriptivo con enfoque cuantitativo, realizado entre febrero y diciembre de 2021, período en el que se realizó una revisión bibliográfica integradora para relevar los términos que representan las necesidades humanas afectadas en el paciente renal crónico en hemodiálisis; luego se procedió al mapeo cruzado de estos términos identificados con los términos de la CIPE® versión 2019/2020. Resultados se identificaron 1.946 términos extraídos de los artículos que formaban parte de la revisión integradora. Tras el proceso de normalización y estandarización, se excluyeron 689 términos, resultando en la posterior composición de 1.257 términos, que fueron mapeados con los términos de la Clasificación Internacional para la Práctica de Enfermería versión 2019/2020. Al final, el banco de términos estaba compuesto por 626 términos constantes y 631 términos no constantes. Conclusión e implicación para la práctica se identificaron los términos relevantes para la práctica enfermera en el cuidado de los pacientes con insuficiencia renal crónica en hemodiálisis. Los términos se subsiguen para ayudar al enfermero a promover una asistencia sistematizada, utilizando una práctica basada en la evidencia.

Abstract Objectives to identify the terms that represent the human needs affected in chronic renal failure patients on hemodialysis; and to cross-map these terms with those already existing in the International Classification for Nursing Practice. Method a descriptive study with a quantitative approach, conducted between February and December 2021, a period in which an integrative literature review was prepared to survey the terms that represent the human needs affected in chronic renal failure patients on hemodialysis; then, we proceeded to the cross-mapping of these terms identified with the ICNP® terms 2019/2020 version. Results 1,946 terms were identified extracted from the articles that were part of the integrative review. After the normalization and standardization process, 689 terms were excluded, resulting in the subsequent composition of 1,257 terms, which were mapped with the terms of the International Classification for Nursing Practice 2019/2020 version. In the end, the term bank consisted of 626 constant terms and 631 non-constant terms. Conclusion and implications for practice relevant terms were identified for nursing practice in the care of chronic kidney disease patients on hemodialysis. The terms will help nurses to promote a systematized care, using an evidence-based practice.

Design and application of heating device and temperature control system for dialysis fluid bag in continuous renal replacement therapy / 中华危重病急救医学

In the process of continuous renal replacement therapy (CRRT), various factors such as the temperature of replacement fluid, the flow of fluid and the circulation of blood in cardiopulmonary bypass, lead to the temperature of the blood injected back into the body is often lower than normal. It leads to the decrease of body temperature and the occurrence of hypothermia, which can be life-threatening in severe cases. In clinical practice, medical staff mostly reduces the occurrence of hypothermia in patients with CRRT by means of the heating device of the machine, the heating of the liquid temperature box for cardiopulmonary bypass, and the application of heating blankets, but the effect is not ideal. Therefore, medical staff of the department of critical care medicine of the Second Affiliated Hospital of Anhui Medical University designed a heating device and temperature control system for CRRT dialysis fluid bag, and obtained the National Invention Patent of China (ZL 2021 1 0334906.7). The device includes a heating and thermal insulation device and a temperature control system, wherein the heating and thermal insulation device is composed of the body of the heating dialysis fluid bag and the temperature control structure, which solves the problems of safe and efficient liquid heating and thermal insulation during the CRRT process. The temperature control system can display the dynamic state of the patient's body temperature, adjust the temperature of the dialysis fluid bag in time, and monitor the temperature of the blood transfusion in real time through the cooperation of the five modules of data collection, data handle, data analysis, regulation and display. This design is applied to CRRT, which can achieve precise control of body temperature of critically ill patients, and has certain clinical significance.

Effect of continuous renal replacement therapy on plasma concentration, clinical efficacy and safety of colistin sulfate / 中华危重病急救医学

Objective:To investigate the effects of continuous renal replacement therapy (CRRT) on plasma concentration, clinical efficacy and safety of colistin sulfate.Methods:Clinical data of patients received with colistin sulfate were retrospectively analyzed from our group's previous clinical registration study, which was a prospective, multicenter observation study on the efficacy and pharmacokinetic characteristics of colistin sulfate in patients with severe infection in intensive care unit (ICU). According to whether patients received blood purification treatment, they were divided into CRRT group and non-CRRT group. Baseline data (gender, age, whether complicated with diabetes, chronic nervous system disease, etc), general data (infection of pathogens and sites, steady-state trough concentration, steady-state peak concentration, clinical efficacy, 28-day all-cause mortality, etc) and adverse event (renal injury, nervous system, skin pigmentation, etc) were collected from the two groups.Results:A total of 90 patients were enrolled, including 22 patients in the CRRT group and 68 patients in the non-CRRT group. ① There was no significant difference in gender, age, basic diseases, liver function, infection of pathogens and sites, colistin sulfate dose between the two groups. Compared with the non-CRRT group, the acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) and sequential organ failure assessment (SOFA) were higher in the CRRT group [APACHE Ⅱ: 21.77±8.26 vs. 18.01±6.34, P < 0.05; SOFA: 8.5 (7.8, 11.0) vs. 6.0 (4.0, 9.0), P < 0.01], serum creatinine level was higher [μmol/L: 162.0 (119.5, 210.5) vs. 72.0 (52.0, 117.0), P < 0.01]. ② Plasma concentration: there was no significant difference in steady-state trough concentration between CRRT group and non-CRRT group (mg/L: 0.58±0.30 vs. 0.64±0.25, P = 0.328), nor was there significant difference in steady-state peak concentration (mg/L: 1.02±0.37 vs. 1.18±0.45, P = 0.133). ③ Clinical efficacy: there was no significant difference in clinical response rate between CRRT group and non-CRRT group [68.2% (15/22) vs. 80.9% (55/68), P = 0.213]. ④ Safety: acute kidney injury occurred in 2 patients (2.9%) in the non-CRRT group. No obvious neurological symptoms and skin pigmentation were found in the two groups. Conclusions:CRRT had little effect on the elimination of colistin sulfate. Routine blood concentration monitoring (TDM) is warranted in patients received with CRRT.

Observation on the clinical efficacy of continuous renal replacement therapy with adsorptive filter oXiris in the treatment of patients with severe acute pancreatitis / 中华胰腺病杂志

Objective:To evaluate the clinical efficacy of continuous renal replacement therapy (CRRT) with adsorptive filter oXiris in the treatment of severe acute pancreatitis (SAP).Methods:The clinical data of 5 SAP patients who received the treatment of absorptive filter oXiris in Department of Critical Care Medicine of Shanghai General Hospital from February 2021 to February 2022 were collected. The changes of inflammatory indicators, hemodynamics, acid-base balance indicators and organ function indicators were compared before and 24 h after treatment.Results:Before the treatment of oXiris, 3 patients had pancreatic necrotic infection, and all the five patients had systemic inflammatory response syndrome(SIRS), acute respiratory and circulatory failure and acute renal injury. At 24 h after the treatment with oXiris, the levels of inflammatory indicators such as white blood cell count [(13.4±5.0)×10 9/L vs (25.8±10.0)×10 9/L), CRP [(149.6±68.3)mg/L] vs (289.0±129.4)mg/L] and procalcitonin [3.7(1.4, 17.7)ng/ml vs 12.2(3.2, 62.9)ng/ml] in the blood samples from the patients were greatly decreased. Hemodynamics were obviously improved; heart rate [(107.4±9.5)bpm/min vs (143.4±9.7)bpm/min] was decreased, and the mean artery pressure [(87±5)mmHg vs (73±13)mmHg], 1 mmHg=0.133 kPa] tended to be stabilized. Metabolic acidosis was significantly improved; pH value (7.4±0.0 vs 7.2±0.1) and base excess (-2.1±2.5 vs -14.5±6.1) were increased, while lactic acid [(2.6±1.2)mmol/L vs (10.62±6.55)mmol/L] was decreased. Organ dysfunctions were improved; PaO 2/FiO 2 value (241.7±58.5 vs 115.9±53.6) was increased, while serum creatinine [(148.0±42.5)μmol/L vs (232.8±77.4)μmol/L], intra-abdominal pressure [(18.6±4.5)mmHg vs (24.2±4.0)]mmHg, modified Marshall score [3(3.0, 4.0) vs 6(5.5, 9.0)] and APACHEⅡ score (17.6±2.9 vs 26.0±5.2) were decreased. All the differences above were statistically significant (all P value <0.05). Conclusions:It is safe and feasible to treat SAP patients with CRRT by using oXiris in clinical practice, which may have the functions of clearing inflammatory mediators, stabilizing hemodynamics and acid-base balance and improving organ function.

The risk factors of postoperative continuous renal replacement therapy application in Stanford type A acute aortic dissection / 中华胸心血管外科杂志

Objective:To investigate the risk factors of postoperative continuous renal replacement therapy application in Stanford type A acute aortic dissection.Methods:This retrospective study included 527 patients with Stanford type A acute aortic dissection from November 2015 to February 2018 in Beijing Anzhen Hospital. They were divided into 2 groups according to whether or not needed postoperative continuous renal replacement therapy, group CRRT(78 cases) and group None CRRT(449 cases). Binary logistic regression analysis was used to analyze the risk factors of continuous renal replacement therapy. Results:Of all the patients, the percentage of using continuous renal replacement therapy was 14.8%(78/527), and the mortality of 30 days after surgery was 8.5%(45/527). The independent risk factors associated with CRRT were preoperative serum creatinine(sCr)( OR=1.012, 95% CI: 1.005-1.019, P<0.001), transfusion of red blood cell in surgery( OR=1.141, 95% CI: 1.071-1.216, P<0.001), transfusion of platelet in surgery( OR=1.307, 95% CI: 1.084-1.576, P=0.005), the total amount of drainage( OR=1.000, 95% CI: 1.000-1.000, P=0.036), and the time of extubation after surgery( OR=1.004, 95% CI: 1.001-1.008, P=0.013). Conclusion:The risk factors of CRRT after emergency surgery of Stanford type A acute aortic dissection are preoperative serum creatinine, transfusion of red blood cell in surgery, transfusion of platelet in surgery, the total amount of drainage and the time of tracheal extubation after surgery. We need to focus on those risk factors in our daily job and manage them timely and properly, in order to improve patients’ prognosis.