Enfermedad renal crónica agudizada como causa de mortalidad en paciente con COVID-19

Introducción: La infección por SARS-CoV-2 en pacientes con enfermedad renal crónica se asocia a larga estadía hospitalaria, aparición de complicaciones y mortalidad. Objetivo: Describir el caso clínico de un paciente con enfermedad renal crónica agudizada como causa de mortalidad en presencia de la infección por la COVID-19. Presentación del caso: Paciente masculino de 69 años con antecedentes de enfermedad renal crónica estadio 3a que ingresó a la institución hospitalaria con diagnóstico de COVID-19 y que durante su estadía presentó cifras elevadas de creatinina sérica con el consiguiente desarrollo de injuria renal aguda. Después de cinco sesiones de hemodiálisis mejoró el estado general del paciente y las cifras de creatinina disminuyeron parcialmente. A pesar de la mejoría clínica, el paciente progresó hacia el último estadio de la enfermedad renal crónica. Luego de tres semanas bajo terapia hemodialítica crónica falleció a causa de síndrome coronario agudo con elevación del segmento ST. Conclusiones: El pronóstico de los pacientes con daño renal que desarrollan la COVID-19 es desfavorable. La infección por SARS-CoV-2 favorece la progresión hacia los estadios finales de la enfermedad renal crónica con riesgo incrementado de la mortalidad.

Introduction: SARS-CoV-2 infection in patients with chronic kidney disease is associated with a long hospital stay, the appearance of complications and mortality. Objective: To describe the clinical case of a patient with exacerbated chronic kidney disease as a cause of mortality in the presence of COVID-19 infection. Clinical case: A 69-year-old male patient with a history of stage 3a chronic kidney disease who was admitted to a hospital with a diagnosis of COVID-19 and who during his stay presented elevated serum creatinine levels with the subsequent development of acute kidney injury. After five hemodialysis sessions, the patient's general condition improved and the creatinine levels partially decreased. Despite clinical improvement, the patient progressed to the last stage of chronic kidney disease. After three weeks under chronic hemodialytic therapy, the patient died due to ST-segment elevation acute coronary syndrome. Conclusions: The prognosis of patients with kidney damage who develop COVID-19 is unfavorable. SARS-CoV-2 infection favors progression to the final stages of chronic kidney disease with an increased risk of mortality.

Mortalidad de la insuficiencia renal aguda con requerimiento de hemodiálisis en unidades de terapia intensiva / Mortality of acute renal failure requiring hemodialysis in intensive care units

RESUMEN Introducción: La insuficiencia renal aguda en pacientes internados en unidades de terapia intensiva es frecuente y se asocia con alta mortalidad. El objetivo del trabajo fue identificarfactores relacionados con mortalidad en pacientes internados en unidades de terapia intensiva con insuficiencia renal aguda que requirieron tratamiento sustitutivo de la función renal.Material y métodos:Se identificaron, en forma retrospectiva, 3.732pacientes internados en unidades de terapia intensiva. El 2,7% presentaron insuficiencia renal aguda con requerimiento de tratamiento sustitutivo de la función renal. Se excluyeron pacientes con antecedentes de enfermedad renal crónica con filtrado glomerular menor de 15 ml/m o en diálisis crónica. Resultados:Se analizaron 97 casos, 55% mujeres, mediana de edad 74 años (rango intercuartil: 68-78). Los motivos de insuficiencia renal aguda más frecuentes fueron sepsis (41,2%) y necrosis tubular aguda isquémica (36,1%). El 22,7% eran diabéticos. La mediana de APACHE II fue 23 (rango intercuartil: 19-28). El 75,3% requirió asistencia respiratoria mecánica y el 81,4%, inotrópicos. La mediana de tiempo de internación en unidades de terapia intensiva fue de 8 días (rango intercuartil: 4-11) y la mortalidad fue 58,76%.En el análisis individual, la mortalidad se asoció con asistencia respiratoria mecánica (p<0,0001), el uso de inotrópicos (p<0,0001) y el antecedente deenfermedad renal crónica (p=0.008), pero no se encontró asociación con sexo, edad, APACHE II, diabetes ni otros factores de riesgo cardiovascular. Modelo multivariable de factores asociados con mortalidad: asistencia respiratoria mecánica (Odds Ratio=14,16; p=0,003), inotrópicos (Odds Ratio=8,73; p=0,07) y enfermedad renal crónica (Odds Ratio=0,27; p=0,020).Conclusiones:Los pacientes con insuficiencia renal agudaque requirieron tratamiento sustitutivo de la función renal ingresados a unidades de terapia intensiva presentaron alta mortalidad. El requerimiento de asistencia respiratoria mecánica se asoció con mayor mortalidad, también el uso de inotrópicos, aunque no alcanzó significación estadística en el multivariable. El antecedente de enfermedad renal crónica se asoció con menor mortalidad.

ABSTRACT Introduction: Acute renal failure in patients admitted to intensive care units is common and is associated with high mortality. The aim of the study was to identify factors related to mortality in patients with acute renal failure, hospitalized in intensive care units, who required renal replacement therapy. Methods: We retrospectively identified 3,732 patients admitted to intensive care units; 2.7% had acute renal failure requiring replacement therapy for renal function. Patients with a history of chronic kidney disease with a glomerular filtration rate of less than 15 mL/m or on chronic dialysis were excluded. Results: 97 cases were analyzed, 55% women, median age: 74 years (interquartile range: 68-78). The most frequent reasons for acute renal failure were sepsis (41.2%) and ischemic acute tubular necrosis (36.1%); 22.7% were diabetic. The median APACHE II score was 23 (interquartile range: 19-28). 75.3% required mechanical ventilation and 81.4%, inotropic drugs. Median time of hospitalization in intensive care units was 8 days (interquartile range: 4-11) and the mortality rate was 58.76%. In the individual analysis, mortality was associated with mechanical ventilation (p<0.0001), the use of inotropic drugs (p<0.0001) and a history of chronic kidney disease (p=0.008), but no association was found with sex, age, APACHE II score, diabetes, or other cardiovascular risk factors. Multivariate model of factors associated with mortality: mechanical ventilation (Odds Ratio=14.16; p=0.003), inotropic drugs (Odds Ratio=8.73; p=0.07) and chronic kidney disease (Odds Ratio=0.27; p=0.020). Conclusions: Patients with acute renal failure who required renal replacement therapy and were admitted to intensive care units presented high mortality. The requirement for mechanical ventilation was associated with higher mortality, as was the use of inotropic drugs, although it did not reach statistical significance in the multivariate analysis. A history of chronic kidney disease was associated with lower mortality.

Daño renal agudo en pacientes con ventilación mecánica invasiva, Guantánamo 2018-2019 / Acute kidney injury in patients with invasive mechanical ventilation in Guantanamo, 2018-2019

RESUMEN Introducción: El daño renal agudo es una complicación frecuente en las Unidades de Terapia Intensiva, sobre todo en pacientes con ventilación mecánica. Objetivo: Caracterizar el daño renal agudo en los pacientes tratados con ventilación mecánica invasiva en la Unidad de Terapia Intensiva del Hospital General Docente "Dr. Agostinho Neto" durante el periodo 2108-2019. Método: Se realizó un estudio descriptivo, retrospectivo y longitudinal, que se aprobó por el Comité de Ética. El universo de estudio se constituyó por el total de pacientes con este diagnóstico según la clasificación Acute Kidney Injury Network (AKIN). Se estudiaron las características de los pacientes (necesidad y duración de la VAM, necesidad de hemodiálisis, estado al egreso) y del daño renal agudo (estadio y etiología). Resultados: El 47,5 % de los pacientes tratados con este soporte vital presentó un daño renal agudo, sobre todo los que la demandaron por siete o más días (68,4 %). El riesgo de muerte fue superior en los pacientes que requirieron ventilación mecánica o hemodiálisis. En los pacientes con daño renal estadio 2 y 3 de la clasificación que se utilizó presentaron un riesgo tres veces o más superior comparado con los que no necesitaron estas terapias. La sepsis (69,4 %) fue la principal causa del daño renal agudo. Conclusiones: El uso de ventilación mecánica invasiva y la presentación de un daño renal agudo son condiciones con una fuerte asociación, juntas y separadas se correlacionan con la mortalidad.

ABSTRACT Introduction: Acute kidney injury is a very common complication in the intensive care units, especially in patients with invasive mechanical ventilation. Objective: To characterize acute kidney damage in patients with invasive mechanical ventilation in the intensive care unit at the General Teaching Hospital ¨Dr. Agostinho Neto¨ within the period 2018-2019. Method: A descriptive, retrospective and longitudinal study approved by the Ethics Committee was carried out. The study population was constituted by the total of patients with the diagnosis, according to the Acute Kidney Injury Network (AKIN). Characteristics and variables like: reason for the invasive mechanical ventilation, its duration, hemodialysis, and status of the patient at time of discharge were taken into account, along with the characteristics of the kidney injury (stages and etiology). Results: 47.5 % of the patients treated with life support showed acute kidney injury, especially the ones with more than a week of mechanical ventilation (68.4 %). The risk of death was higher in the patients with mechanical ventilation and hemodialysis. In the patients with stage 2 and 3 of the scale used for kidney injury presented 3 times more risk compared to those who did not require these treatments. Sepsis was the main cause of acute kidney injury (69.4 %). Conclusions: the use of invasive mechanical ventilation and acute kidney injury are deeply related to each other, both of them constitute main issues in the variables of mortality.

Chronic kidney disease in pregnancy and fetomaternal outcome

Background: Chronic kidney disease is a heterogeneous group of renal dysfunctions with complex and varied presentations in pregnancy. With a long asymptomatic course, timely diagnosis and management is crucial for fetomaternal wellbeing.Methods: A retrospective cohort study over a period of 3 years and 4 months included all obstetric in patients with known or newly diagnosed renal disorders. Maternal outcome was measured with regard to biochemical parameters presence /absence of proteinuria, hypertension, mode of pregnancy termination and complications. Fetal outcome was noted with respect to antenatal complications, weight, Apgar, NICU stay. Computation of results was done using percentages, mean and proportions.Results: Out of 13 women studied, 53.8% were pre-diagnosed cases of renal dysfunction and 46.2% were diagnosed during pregnancy. 38% had proteinuria at first visit and 50% remained so even after delivery. 60% had history of pregnancy induced hypertension in their previous pregnancies. Secondary hypertension and superimposed preeclampsia were seen in 30% and 38% cases respectively, with only one patient requiring magnesium sulphate prophylaxis in post-partum. Cardiac dysfunction was found to be coexisting in 15.3% cases with pre-existing renal leision. Intrauterine growth restriction was seen in 61.5% cases Average fetal weight was 2. 26kg with 30% having NICU stay. 30.6% had preterm delivery. Mode of delivery was caesarean section in 46% cases.Conclusions: Pregnancy with CKD is a high-risk pregnancy with adverse fetomaternal outcomes. For optimal pregnancy outcomes, an expert multidisciplinary team is required. With limited studies in south Asian population, there needs to be an upgradation in registry system.

Insuficiencia renal aguda en el perioperatorio de cirugía cardiovascular / Acute kidney failure in the perioperative of cardiovascular surgery

Introducción: La lesión renal aguda después de una cirugía cardíaca persiste como una causa importante de morbilidad posoperatoria y la existencia de enfermedades crónicas no transmisibles en pacientes que se remiten a este tipo de procedimiento quirúrgico, es mayor. La incidencia de lesión renal aguda depende del tipo de cirugía y de la función renal previa a la operación, pero muchos son los factores que contribuyen a la manifestación de dicha lesión. Objetivos: Ampliar los conocimientos actuales sobre el paciente con insuficiencia renal aguda en relación con los aspectos principales de su incidencia después de la cirugía cardíaca asociada o no a la circulación extracorpórea y su influencia en la conducción anestésica y la conducta posoperatoria en la aparición del referido daño renal. Métodos: Se consultaron las bases de datos bibliográficas Pubmed, Hinari, Clinical Key, Lilacs, libros de textos de la especialidad y tesis doctorales de donde se extrajeron más de 25 artículos de revisión en su mayoría actualizados. Resultados: La disminución de la morbilidad y mortalidad depende del conocimiento de los factores de riesgo asociados a la aparición de insuficiencia renal aguda en el posoperatorio de la intervención quirúrgica cardiovascular, así como la preparación de las condiciones para enfrentar las posibles complicaciones. Conclusiones: La correcta elección de la técnica anestésica, la monitorización de parámetros hematológicos y clínicos en el perioperatorio mejora la recuperación, menor estadía en las unidades de cuidados intensivos y cardiología, considerable ahorro de recursos y mayor bienestar para los pacientes(AU)

Introduction: Severe renal lesion after cardiac surgery remains as an important cause of postoperative morbidity and the occurrence of non-communicable chronic diseases in patients referred for this type of surgical procedure is higher. The incidence of the severe renal lesion depends on the type of surgery and on renal functions before the operation, but many are the factors contribution to the onset of such lesion. Objectives: To expand current knowledge about patients with acute kidney failure in relation to the main aspects of their incidence after cardiac surgery or not associated with extracorporeal circulation and its influence on anesthetic conduction and postoperative behavior in the appearance of the referred kidney damage. Methods: We consulted the bibliographic databases Pubmed, Hinari, Clinical Key, Lilacs, specialty textbooks and doctoral dissertations, from which more than 25 review articles, mostly updated, were taken Results: The decrease in morbidity and mortality depends on the knowledge about risk factors associated with the onset of acute kidney failure in the postoperative period of the cardiovascular surgical intervention, as well as the preparation of the conditions to confront the possible complications. Conclusions: The correct choice of anesthetic technique, as well as the monitoring of hematological and clinical parameters in the perioperative period improves recovery, less stay in the intensive care and cardiology units, considerable saving of resources and greater well-being for patients(AU)

Effect of emodin on gut microbiota of rats with acute kidney failure / 中国中药杂志

The aim of this paper was to investigate the effect of emodin on gut microbiota in acute kidney injury rats( AKI). Rats were randomly divided into several groups: normal group,model group,low-dose of emodin group( 10 mg·kg~(-1)),medium-dose of emodin group( 25 mg·kg~(-1)),high-dose of emodin group( 50 mg·kg~(-1)) and control group( 5 mg·kg~(-1) of benazepril hydrochloride).The AKI model rats were established by intraperitoneal injection of small dose of gentamicin sulfate for 7 days. Two hours after intraperitoneal injection,except for the normal group and the model group,the other groups were given corresponding doses of drugs for 15 days. The serum levels of serum creatinine( SCr),urea nitrogen( BUN),plasma endotoxin level,24 h urinary protein and D-lactate in the plasma were determined by sarcosine oxidase,urease method,tal reagent method,bromo cresol chloroform method and double antibody sandwich enzyme-linked immunoadsorbent assay,respectively. Gut microbial communities were assayed by fluorescent quantitative PCR methods. HE staining was used to detect the pathological changes of the kidneys. Compared with the normal group,there were significant differences in body weight,urinary protein( UTP),bacterial endotoxin,urea nitrogen,creatinine,D-lactate in the plasma and four bacterial contents in the model group( P<0. 05). The urinary protein,urea nitrogen,D-lactate,creatinine and plasma bacterial endotoxin in control group and each emodin group were lower than those in model group,especially for high-dose of emodin( P<0. 01). Moreover,pathology resolution in high-dose emodin was better than other groups. Except for low-dose of emodin group,qRT-PCR data suggested that the amounts of Escherichia coli and Enterococcus in medication administration group were increased,while the amounts of Lactobacilli and Bifidobacterium were reduced compared with model group( P<0. 05),especially for high-dose of emodin( P<0. 01). There is a clear imbalance of gut microbiota in rats with AKI. Emodin could regulate the imbalance of gut microbiota,which might be one of the mechanisms of its effects on AKI rats.

Type 1 cardiorenal syndrome in a patient with an acute infection caused by Trypanosoma cruzi in the Brazilian Amazon region - a case report

Abstract Cardiorenal syndrome type 1 (CRS 1) occurs when acute heart failure leads to acute kidney injury. There are several etiologies of CRS 1, including Chagas disease. Here, we present the first case report of CRS 1 in a patient with acute Chagas disease. Electrocardiography, transthoracic echocardiography, and cardiac magnetic resonance imaging showed signs of acute myocarditis. Laboratory examination revealed severe loss of kidney function, with a creatinine clearance of 30 mL/min, which fully normalized after treatment. Due to emergence of Chagas disease in the Brazilian Amazon, it is important to report unique clinical features in order to improve patients' outcomes.

Intoxicação por diquat / Diquat intoxication

O paraquat e o diquat são herbicidas de contacto do grupo dos bipiridilos, utilizados largamente para controlo de ervas daninhas. A importância deste grupo de herbicidas reside na sua utilização frequente para fins suicidas e pela inexistência de antídoto ou tratamento médico específico. O envenenamento com diquat é muito menos comum que com o paraquat e por isso existem poucos casos descritos na literatura. A dose letal de ambos é sobreponível, contudo o diquat é considerado menos tóxico devido ao menor dano pulmonar. Por outro lado, o diquat tem efeitos tóxicos graves sobre o sistema nervoso central. Por este motivo os sinais de neurotoxicidade pelo diquat são os mais relevantes e incluem sinais de parkinsonismo. O rim é a principal via excretora do diquat e a necrose tubular aguda é a lesão tipicamente identificada. A sobrevida depende de dois fatores: a concentração da substância no plasma e o tempo após a ingestão. O tratamento centra-se em três pontos essenciais: prevenção da absorção, rápida excreção e modificação dos efeitos tecidulares. A hemoperfusão é mais eficaz na clearance do diquat do que a hemodiálise e a sua utilização nas primeiras 12 horas de intoxicação pode reduzir a mortalidade.

Paraquat and diquat are contact herbicides from bipyridyl group, commonly used in weed control. The importance of this herbicide group is due to its frequent use with suicidal purpose and because there is neither an antidote nor a specific treatment. Poisoning with diquat is much less common that with paraquat, so there are few cases published in literature. The lethal dose of both is similar, however diquat is considered less toxic because it causes less lung damage. On the other side, diquat has severe toxic effects on central nervous system and neurotoxic signs are the more relevant, and include Parkinsonism. The kidney is the main excretory pathway of diquat and acute tubular necrosis is typical. Survival depends on two factors: plasma concentration and time of ingestion. Treatment focus in three key points: preventing absorption, rapid excretion and tissue effects. Hemoperfusion is more effective in diquat clearance than haemodialysis and its use in first 12 hours can reduce mortality.

Asociación de insuficiencia renal aguda con mortalidad y complicaciones en pacientes hospitalizados con cirrosis hepática / Association of acute renal failure with mortality and complications in hospitalized patients with liver cirrhosis

Resumen ANTECEDENTES: la insuficiencia renal aguda es una de las complicaciones más severas de la cirrosis y conlleva un pronóstico ominoso. Los estudios que han utilizado definiciones más actuales de daño renal agudo, como AKIN (Acute Kidney Injury Network) o RIFLE (The Risk, Injury, Failure, Loss and End-stage kidney disease criteria) se enfocan en pacientes admitidos en unidades de cuidados intensivos y no pueden generalizarse a otros pacientes hospitalizados. El Club Internacional de Ascitis (ICA por sus siglas en inglés) recientemente adoptó una definición dinámica de insuficiencia renal crónica en pacientes con cirrosis, definiéndola como el incremento de la creatinina sérica mayor o igual de 0.3 mg/dL en las últimas 48 horas o un incremento de más de 50% de la creatinina basal conocida ocurrida en los últimos siete días, estadificándose de acuerdo con los incrementos de la creatinina. OBJETIVO: evaluar la repercusión de la severidad de la insuficiencia renal aguda de acuerdo con la clasificación del Club Internacional de Ascitis en la mortalidad de los pacientes con cirrosis hepática hospitalizados, así como conocer los principales desencadenantes de insuficiencia renal aguda en pacientes con cirrosis hepática hospitalizados, los patrones de recuperación o progresión de la misma. PACIENTES Y MÉTODO: estudio transversal, observacional, no aleatorizado y multicéntrico, en el que se utilizó la definición de insuficiencia renal aguda propuesta por el Club Internacional de Ascitis. Los pacientes se captaron en un lapso de cuatro meses, del 1 de abril al 31 de julio de 2015, en el Hospital General Ticomán y en el Hospital General de Ecatepec; se solicitó consentimiento informado de los pacientes o en caso pertinente, del familiar responsable del mismo. Se excluyeron los pacientes menores de 18 años, sujetos con insuficiencia hepática aguda y los pacientes con enfermedad renal crónica. RESULTADOS: se incluyeron 45 pacientes con cirrosis hepática, de los que 36 eran hombres, con edad promedio de 46.2 años. La causa de la cirrosis hepática fue por alcohol en 40 pacientes (89%), viral en 3 (7%) y mixta en 2 (4%); la estadificación de insuficiencia renal aguda inicial fue: estadio 1: 36 (80%), estadio 2: 8 (18%) y estadio 3: 1 (2%). Ocurrieron siete defunciones (15.5%); de éstas, todos los pacientes estaban en la categoría C de la clasificación Child-Pugh, con insuficiencia renal aguda en estadio inicial 1; en 6 (13%) pacientes con progresión a estadio 3 y en estadio inicial 2; en 1 (2%) paciente con progresión a estadio 3. La severidad de la cirrosis en la escala MELD (Model for End-Stage Liver Disease) fue de 31.07±8.44 puntos en los pacientes que fallecieron versus 22.98±9.64 puntos (p=1.21) en los supervivientes. El puntaje de Child-Pugh en el grupo de pacientes fallecidos fue de 14.29±0.9 vs 0.29±2.31 en los supervivientes (p=0.001). CONCLUSIONES: la mortalidad en pacientes con cirrosis hepática e insuficiencia renal aguda fue más frecuente en pacientes con progresión al estadio de insuficiencia renal aguda y en sujetos con mayor severidad de la cirrosis hepática, valorada por Child-Pugh o por la escala MELD. Se requieren estudios de cohorte en nuestra población para validar la reciente clasificación del Club Internacional de Ascitis de la insuficiencia renal aguda en cirrosis y para determinar los factores asociados con incremento en la mortalidad en este grupo de pacientes.

Abstract BACKGROUND: Acute renal failure is one of the most severe complications of cirrhosis and entails a bad prognosis. The studies that had used most current definitions of acute kidney injury such as AKIN (Acute Kidney Injury Network) or RIFLE (The Risk, Injury, Failure, Loss and End-stage kidney disease criteria) has focused in patients admitted to the critical care units, and thus they can not be generalized to other hospitalized patients. Recently, the International Club of Ascites (ICA) adopted a dynamic definition of acute kidney failure in patient with cirrhosis, defined like increase of the creatinine level ≥0.3 mg/dL in the last 48 h; or a increase ≥50% from the basal creatinine in the last seven days, staged according the increase of creatinine. OBJECTIVES: To evaluate the impact of acute kidney injury severity according to the classification of the International Club of Ascites in the mortality of hospitalized patients with liver cirrhosis. To know the main triggers of acute kidney failure in hospitalized patients with liver cirrhosis, and to know the patterns of recovery and progression of renal failure. PATIENTS AND METHOD: A transversal, observational, no-randomized multicentric study designed. We used the definition of acute kidney failure proposed for the ICA. Patients were included from the General Hospital Ticoman and the General Hospital of Ecatepec in Mexico, in a four-month-period, from 1st April to 31st July of 2015; informed consent was obtained from the patients or in the pertinent case from the responsible familiar. Patients with less than 18 years old, with acute liver failure or chronic renal failure were excluded. RESULTS: They were included 45 patients with liver cirrhosis, 36 men, with a mean age of 46.2 years old. The etiology of the liver cirrhosis was alcohol in 40 patients (89%), viral in 3 (7%) and mixed in 2 (4%). The stage of acute liver failure was stage 1: 36 (80%), stage 2: 8 (18%) and stage 3: 1 (2%). Seven deaths occurred (15.5%), from there all the patients were classified in the C stage of the Child-Pugh Classification; death occurred with acute renal failure in initial stage 1; in 6 (13%) with progression to the stage 3 and in initial stage 2 in 1 (2%) with progression to stage 3. The severity of cirrhosis accord to the MELD classification was 31.07±8.44 points in the mortality cases, compared with 22.9±9.64 points (p=1.21) in the survivals. Child-Pugh score in the cases of death was 14.29±.9 vs 0.29±2.31 in survivals (p=0.001). CONCLUSION: Mortality in patients with liver cirrhosis and acute kidney failure was more frequent in patients with progression of the acute kidney failure, and in those with a more severe liver damage in the MELD or Child-Pugh scores. There are necessary cohort studies for the validation of the recent classification of the International Club of Ascites for Acute kidney failure in cirrhosis, and to determine the factors associated to the increase of mortality in this group of patients.

Midterm outcomes following acute kidney failure after surgery for acute type A aortic dissection / 中华胸心血管外科杂志

Objective This study aims to analyze midterm survival and to assess the midterm mortality following acute kidney failure (AKF) of patients undergoing surgical treatment of acute type A aortic dissection.Methods Clinical data of the patients who underwent Sun's procedure from February 2009 to March 2015 were collected.Patients with preoperative dialysis were excluded.Data including preoperative cardiovascular diseases,serum creatinine leve1 and CPB time were gathered.The patients were divided into the group of AKF and the group of non-AKF accounting to require dialysis.The group of AKF was follow-up by phone.Midterm mortality was studied with Cox analysis and midterm survival was estimated by Kaplan-Meier analysis.Results 524 patients underwent aortic surgeries which AKF was occurred in 51 (51/524,9.7％) patients.Hospital mortality was 23.5％ (12/51) in AKF group which seven death were strokes,three death were lower-extremity ischemia and two death were low cardio output.There were 2 patients dead with multi organ failure and paraplegia in first year.One reoperation patient because of anastomotic fistula was dead in fifth year.Only diabetes was independently associated with midterm mortality.Midterm survival for patients with AKF was 56％ during a median follow-up of 30.5 months.Survival was equal between the subgroups of Cr ＞ 200 mol/L and Cr ＜ 200 mol/L(P =0.741).Conclusion AKF after acute aortic dissection was a severe complication and the incidence was 9.7％.In patients with AKF,diabetes was associated with increased mortality across follow-up.Five years survival was 56％ not effected by preoperative Cr.

Effect of continuous renal replacement therapy on the levels of IL - 27 in peripheral blood of patients with chronic heart failure concurrence acute kidney failure / 实用医学杂志

Objective To investigate the effect of continuous renal replacement therapy on the levels of IL-27 in peripheral blood of patients with chronic heart failure concurrence acute kidney failure. Methods 78 patients with chronic heart failure were enrolled from June 2012 to December 2013 in Zhujiang hospital affiliated Southern medical university. According to patient′s condition, 38 patients with chronic heart failure concurrence acute kidney failure undertaking CRRT, 40 patients with chronic heart failure undertaking conventional therapy. Heart function were determined by cardiac ultrasound, the levels of IL-27 and BNP were determined by ELISA. Results Compared with chronic heart failure patients, the levels of IL-27 were decreasing but BNP were increasing in patients with chronic heart failure concurrence acute kidney failure (P < 0.05). After CRRT, the levels of IL-27 were increasing but BNP were decreasing in patients with chronic heart failure concurrence acute kidney failure. Correlation analysis showed that the levels of IL-27 is negatively correlated with the levels of BNP , but positively correlated with LVEF (P<0.05). Conclusion IL-27 participated in the development of chronic heart failure concurrence acute kidney failure. CRRT regulating and controlling the heart and kidney function may partly through effecting on immune-inflammatory mechanism.

Acute renal failure following operation in patients with acute type A aortic dissection: An analysis of risk factors / 第二军医大学学报

Objective To identify the risk factors of acute renal failure following operation in patients with acute type A aortic dissection (AAAD). Methods The clinical data of 266 consecutive patients undergoing operation for AAAD between Jan. 2002 and Mar. 2013 were retrospectively analyzed. The patients were divided into two groups according to the presence of postoperative acute renal failure. The general data were compared between the two groups. Univariate and multivariate conditional logistic regression analysiswere used to determine the independent risk factors of postoperative acute renal failure. Results Eighteen (6. 77%) patients had acute renal failure in our study. The incidence rates of preoperative cardiac dysfunction (NYHA II-IV) (P = 0. 024), renal insufficiency (P = 0. 002), cardiopulmonary bypass time (CPBT)≥190 min (P = 0. 000), aortic cross-clamp time≥90 min (P = 0. 015), postoperative re-operation for bleeding (P = 0. 004), brain damage (P = 0. 013), acute respiratory dysfunction (P = 0. 000) and perioperative erythrocyte transfusions (P = 0. 015) were significantly different between the two groups preoperatively. Multivariate conditional logistic regression analysis showed that preoperative renal insufficiency (0R=6.978, 95% Cl: 1.874-25.997), CPBT≥190 min (0R= 5. 663, 95% Cl: 1.621-19.781), perioperative erythrocyte transfusions (0R=1.071, 95% CI: 1. 030-1. 113)and postoperative acute respiratory dysfunction (0R= 4. 853, 95% Cl: 1. 467-16. 053)were independent risk factors for postoperative acute renal failure. Conclusion Renal failure is a severe complication caused by many risk factors after operation in AAAD patients. The patients should be monitored closely early after operation; the risks of acute renal failure should be assessed and individualized intervention should be given to improve hospital mortality and prognosis.

Reemplazo renal en el post-operatorio de niños sometidos a cirugía cardíaca con circulación extracorpórea / Renal replacement therapy after cardiac surgery with extracorporeal circulation

Objective: Acute kidney injury (AKI) is a frequent complication of cardiac surgery with cardiopulmonary bypass (CPB). The aim of this study was to determine the incidence of renal replacement therapy (RRT) requirement in children undergoing surgical repair for congenital cardiopathies and identify the risk factors for requiring RRT. Patients and Methods: A retrospective, descriptive study was performed. The records of patients under 18 years undergoing cardiac surgery with CPB (January 2001 to July 2008) who required RRT (n = 15) and from a random patients sample that did not require it (n = 57) were analysed. Results: Fifteen children out of 942 required acute RRT (1.6 percent). Initial RRT was peritoneal dialysis (PD) in all of them. The main indications were hypervolemia and/or oligoanuria. Ten patients experienced complications associated to therapy and 14 patients had a history of serious intraoperative events. In multivariated analysis, hypotension (OR 36.0, CI 95 percent: 5.5-235.6) and serious low cardiac output (LCO) (OR 14.1, CI 95 percent: 1.47-135.32) were significant risk factors for RRT requirement. In turn, the presence of intraoperative events was significantly associated with the occurrence of hypotension (OR 28.9, CI 95 percent: 3.6-233.9) and LCO (OR 5.3, CI 95 percent: 1.126.6) during the post-surgical evolution. Conclusion: In this experience, severe hypotension and low cardiac output were significant risk factors for RRT requirement. The incidence of RRT was 1.6 percent. Renal function should be closely evaluated in those patients with surgical events. RRT should be early considered in those patients with risk factors for renal failure.

Introducción: La insuficiencia renal aguda es una complicación frecuente de la cirugía cardíaca con circulación extracorpórea (CEC). Objetivo: Determinar la incidencia de requerimiento de terapia de reemplazo renal (TRR) en niños sometidos a reparación quirúrgica de cardiopatías congénitas, caracterizarlos e identificar factores de riesgo de requerir TRR. Pacientes y Método: Se realizó un estudio retrospectivo descriptivo con un componente analítico. Se revisaron las fichas clínicas de los pacientes menores de 18 años sometidos a cirugía cardíaca con CEC (enero 2001 a julio 2008) que requirieron TRR (n = 15) y de una muestra aleatoria de pacientes que no la requirieron (n = 57). Resultados: De los 942 niños operados, 15 requirieron TRR aguda (1,6 por ciento). En todos, la TRR inicial fue peritoneodiálisis (PD). Las principales indicaciones fueron hipervolemia y/o oligoanuria. Diez pacientes presentaron complicaciones asociadas a la terapia y 14 tenían antecedentes de incidentes intraoperatorios graves. En forma multivariada, la hipotensión arterial (OR 36,0 IC 95 por ciento: 5,5-235,6) y el hipodébito grave (OR 14,1 IC 95 por ciento: 1,47-135,32) fueron factores de riesgo significativos de requerir TRR. A su vez, la presencia de incidentes intraoperatorios se asoció significativamente al desarrollo de hipotensión (OR 28,9 IC 95 por ciento: 3,6-233,9) e hipodébito (OR 5,3 IC 95 por ciento: 1,1-26,6) durante la evolución post-quirúrgica.

Transitory increase in creatinine levels after parathyroidectomy: evidence of another action of the parathyroid glands? / Alteração transitória da creatinina após paratireoidectomia: evidência de outra ação das glândulas paratireoides?

OBJECTIVE: Little information is available on glomerular function changes after surgical treatment of primary hyperparathyroidism. The acute effects of some head and neck operations on renal function were studied. MATERIAL AND MATHODS: Retrospective analysis of changes in creatinine levels and estimated glomerular filtration rate (eGFR) after surgery. Preoperative values were compared with values available until 72 hours after the operation. RESULTS: In tertiary hyperparathyroidism, mean preoperative and postoperative eGFR values were 57.7 mL/min and 40.8 mL/min (p < 0.0001), respectively. A similar decrease was observed after parathyroidectomy for primary hyperparathyroidism, from 85.4 mL/min to 64.3 mL/min (p < 0.0001). After major head and neck procedures, there was a slight increase in eGFR (from 94.3 mL/min to 105.4 mL/min, p = 0.002). CONCLUSION: Parathyroidectomy may be followed by a transient decrease in eGFR that is not often observed in other head and neck operations.

OBJETIVO: Há pouca informação sobre alterações da função glomerular após o tratamento cirúrgico do hiperparatireoidismo primário. O efeito agudo sobre a função renal foi estudado após algumas operações em cirurgia de cabeça e pescoço. MATERIAIS E MÉTODOS: Análise retrospectiva dos níveis de creatinina e da taxa de filtração glomerular estimada (eGFR). Os valores pré-operatórios foram comparados aos valores disponíveis até 72 horas após a operação. RESULTADOS: No hiperparatireoidismo terciário, os valores médios pré e pós-operatórios da eGFR foram 57,7 mL/min e 40,8 mL/min (p < 0,0001), respectivamente. O decréscimo após paratireoidectomia por hiperparatireoidismo primário foi de 85,4 mL/min para 64,3 mL/min (p < 0,0001). Após operações maiores de cabeça e pescoço, houve leve elevação da eGFR (de 94,3 mL/min para 105,4 mL/min, p = 0,002). CONCLUSÕES: A paratireoidectomia pode ser seguida de uma redução transitória na eGFR que não é frequentemente observada após outras operações em cabeça e pescoço.

Síndrome urémico hemolítico atípico de presentación neonatal / Atypical hemolytic uremic syndrome of neonatal presentation

El Síndrome urémico hemolítico (SUH) tiene formas típicas y atípicas. Se describe una variedad de formas genéticas con pobre pronóstico. Presentamos un bebé prematuro de 36 semanas, de bajo peso al nacer, quien a las 2 semanas de vida cursó con sepsis y necrosis intestinal siendo sometido a cirugía para realizarle ileostomía. Evolucionó con hipertensión arterial, hematuria, falla renal aguda y proteinuria persistente. A los 2 meses de vida, posterior al cierre de ileostomía, cursó con shock séptico y falleció. La biopsia renal post mortem mostró cuadro compatible de SUH. Dos años después, un hermano debutó a los 2 días de vida con síndrome nefrótico congénito. El estudio genético reveló que la madre era portadora del gen NPHS1 y el padre, del Factor I de complemento. El segundo hijo era portador de ambos genes.

Hemolytic Uremic Syndrome (HUS) has typical and atypical presentations. A variety of genetic forms, with poor prognosis are described. We report a 36 week premature baby, low birth weight, who at 2 weeks of life evolved with sepsis and intestinal necrosis undergoing surgery for ileostomy, hypertension, hematuria, acute renal failure and persistent proteinuria. At 2 months, after ileostomy closure, developed irreversible septic shock and died. Postmortem renal biopsy was compatible with HUS. Two years later, a brother presented after 2 days of birth with congenital nephrotic syndrome. Genetic studies revealed that the mother was carrying the gene NPHS1 and the father, factor I of complement. The second child was a carrier of both genes.

One-Year Mortality of Acute Kidney Injury in Patients with Acute Myocardial Infarction / 대한신장학회지

PURPOSE: Acute kidney injury (AKI) is a common complication during hospitalization and is an accepted risk factor for in-hospital mortality. However, the association of severity of AKI with the long-term risk of death is not well known. This study aimed to investigate the incidence and clinical significance of AKI in patients with acute myocardial infarction (AMI). METHODS: To examine the effect of the severity of AKI on 1-year risk of death following AMI, we performed an observational study of 1,224 patients admitted for AMI. We evaluated the association between AKI and all-cause mortality. Patients with maintaining hemodialysis treatment (n=7), and who died during hospitalization (n=71) were excluded. Remaining 1146 patients were divided into three groups according to the Acute Kidney Injury Network (AKIN) criteria (Stage-1, -2, and-3). The primary end point of the study was 1-year all-cause mortality after hospital discharge. The relation between the severity of AKI and 1-year mortality after AMI was analyzed. RESULTS: AKI was developed in 222/1,146 (19.3%) patients during the hospital stay. Adjusted hazard ratio for 1-year mortality was 3.064 (95% CI 1.618 to 5.803, p=0.001), 6.112 (95% CI 2.344 to 15.935, p<0.001) and 20.030 (95% CI 5.428 to 73.912, p<0.001) in stage-1, -2, and stage-3 AKI groups compared with that of no AKI group. CONCLUSION: The severity of AKI is strongly related to 1-year all cause mortality in patients with AMI.

A Case of Bilateral Acute Renal Cortical Necrosis Complicated by Tranexamic Acid Administration / 대한내과학회지

Acute renal cortical necrosis is an anuric form of acute renal failure. We experienced a case of renal cortical necrosis complicated by tranexamic acid administration. To our knowledge, only three cases of renal cortical necrosis have been reported worldwide. A 49-year-old man was referred with hemothorax and multiple bone fractures following a traffic accident. Tranexamic acid, and hemocoagulase were injected three times a day. After the 4th dose of hemostatics, anuria developed abruptly, the platelet count decreased to 84,000 /microL, and the serum creatinine was increased to 2.56 from 1.06 mg/dL. On the 4th Intensive Care Unit (ICU) day, computed tomography (CT) showed bilateral renal cortical necrosis with normal renal arteries and aorta. The oliguria persisted for 14 days and temporary hemodialysis was performed. The serum creatinine had decreased to 2.12 mg/dL 8 months after discharge.

Clinical Characteristics and Risk Factors of Acute Kidney Injury in Patients with Acute Alcohol Intoxication / 대한신장학회지

PURPOSE: Acute alcohol intoxication (AAI) causes various complications such as electrolyte imbalance, alcoholic ketoacidosis (AKA), rhabdomyolysis, and acute kidney injury (AKI). Although there have been some reports about AKA and rhabdomyolysis, AKI due to acute alcohol intoxication is rarely reported. METHODS: We retrospectively evaluated the medical records of 371 patients with AAI between January 2004 and May 2010 in Uijeongbu St. Mary's Hospital. We compared the clinical findings, morbidity and mortality rate between AKI and normal kidney function (NKF) groups. RESULTS: Of the total 371 patients with AAI, AKI occurred in 107 patients (28.8%). The peak serum creatinine level in AKI patients was 2.9+/-1.9 mg/dL. Thirteen of the 107 patients (12.1%) received renal replacement therapy. AKI group had higher incidence of decreased mentality (29.0% vs 16.3%, p=0.006), dyspnea (11.2% vs 4.9%, p=0.029) and hypotension (66.0% vs 41.7%, p<0.001), and lower incidence of gastrointestinal bleeding (22.4% vs 34.8%, p=0.019), compared to NKF group. The AKI group also had higher incidence of ketoacidosis (78.5% vs 28.8%, p<0.001), rhabdomyolysis (19.6% vs 4.2%, p<0.001), and pneumonia (22.4% vs 8.0%, p<0.001), compared to NKF group. The length of ICU stay was longer (7.4+/-10.8 vs 4.1+/-6.1 days, p=0.003) and the mortality rate was higher (17.8% vs 2.3%, p<0.001) in AKI group. CONCLUSION: This study demonstrated that incidence of AKI in patients with AAI was 28.8% and AKI was associated with high morbidity and mortality. And multivariate analysis demonstrated that independent risk factors of AKI were ketoacidosis and increased serum osmolality.

Intravenous Sodium Bicarbonate and Oral N-acetylcysteine for the Prevention of Contrast-Induced Nephropathy / 대한내과학회지

BACKGROUND/AIMS: The value of hydration with sodium bicarbonate and N-acetylcysteine (NAC) in the prevention of radiocontrast-induced nephropathy is questionable. This study investigated whether sodium bicarbonate hydration with or without NAC has a more protective role in the prevention of radiocontrast-induced nephropathy than saline hydration with or without NAC. METHODS: We prospectively studied 100 patients with significant proteinuria (> or = 500 mg/d), azotemia (serum creatinine > or = 1.5 mg/dL), or diabetes mellitus who were undergoing coronary angiography using iodixanol, a nonionic iso-osmolar contrast agent. Patients were assigned randomly to receive saline infusion (S, n = 24), saline infusion plus NAC (S + NAC, n = 20), sodium bicarbonate infusion (B, n = 25), and sodium bicarbonate plus NAC (B + NAC, n = 31). Contrast-induced nephropathy was defined as an increase of 25% or more in the serum creatinine within 48 hours of contrast exposure. RESULTS: There were no significant group differences in age, sex, and basal serum creatinine. Contrast-induced nephropathy occurred in 20 patients (20%) and its incidence was not significantly different among the groups; four from group S, five from group S + NAC, five from group B, and six from group B + NAC. The incidences were not significantly different when compared between S and B, irrespective of the use of NAC (21 vs. 20%), and when compared according to the presence of pre-existing azotemia (19 vs. 20%). CONCLUSIONS: The efficacy of sodium bicarbonate hydration in the prevention of contrast-induced nephropathy seems comparable to that of saline hydration, and it was not improved by the addition of NAC.

Doenças renais em pacientes idosos submetidos à biópsia percutânea de rins nativos / Renal diseases in the elderly underwent to percutaneous biopsy of native kidneys

INTRODUÇÃO: Tem ocorrido aumento da população de idosos e estes vêm envelhecendo em melhores condições clínicas do que no passado. Entretanto, a distribuição e evolução das doenças renais nos idosos ainda são pouco conhecidas, em parte devido à resistência em indicar biópsia renal. OBJETIVO: Avaliar a distribuição, a evolução e as características clínicas das nefropatias diagnosticadas por biópsia em pacientes idosos. PACIENTES E MÉTODOS: Foram avaliadas todas as biópsias renais percutâneas de rins nativos. Elas foram realizadas entre janeiro de 1990 e dezembro de 2006 em 71 pacientes com idade mínima de 60 anos (67,3 ± 6,5 anos), sendo 47 do gênero masculino e 24 do feminino. Os pacientes foram agrupados conforme a indicação clínica da biópsia. RESULTADOS: Síndrome nefrótica foi verificada em 35 pacientes (49,3 por cento) associada, na maioria dos casos, à nefropatia membranosa (17 casos), seguida por amiloidose e glomeruloesclerose segmentar e focal com 7 casos cada. Hipótese diagnóstica de injúria renal aguda (IRA), com 19 pacientes, teve como principais diagnósticos a necrose tubular aguda (6 casos) e a nefropatia do cilindro (3 casos). Dentre os 19 casos, apenas dois tiveram evolução satisfatória, enquanto os demais morreram precocemente ou evoluíram para doença renal avançada. Doze pacientes biopsiados por hematúria ou proteinúria assintomática tiveram diagnósticos variados, mas a maioria já apresentava nefropatia crônica relevante. Biópsia por síndrome nefrítica ocorreu em 5 casos, também com diagnósticos variados. CONCLUSÕES: Síndrome nefrótica foi a principal indicação de biópsia renal com a nefropatia membranosa como diagnóstico mais frequente. Entre os pacientes com IRA e hematúria ou proteinúria assintomática os diagnósticos foram variados com elevadas taxas de nefropatia crônica avançada.

INTRODUCTION: The elderly population is growing and aging in better clinical conditions than in the past. However, the distribution and course of kidney diseases in elderly patients are not well known partially due to reluctance to indicate renal biopsies in those patients. OBJECTIVE: To evaluate the distribution, clinical features, and outcomes of nephropathies diagnosed by biopsy in the elderly. PATIENTS AND METHODS: Seventyone patients (47 males, 24 females) aged 60 years or older (67.3 ± 6.5 years), undergoing biopsy from January 1990 to December 2006, were evaluated. They were grouped according to their clinical syndromes. RESULTS: Nephrotic syndrome was observed in 35 patients (49.3 percent), mainly associated with membranous nephropathy (17 patients), followed by amyloidosis and focal segmental glomerulosclerosis (seven patients each). Acute kidney injury (AKI) was diagnosed in 19 patients, and the main histopathological diagnoses were acute tubular necrosis (six patients) and cast nephropathy (three patients). Of those 19 patients, only two had a favorable course, while the others died early or progressed toward advanced chronic kidney disease. Twelve patients undergoing biopsy because of asymptomatic hematuria or proteinuria had different diagnoses, but most of them already had significant chronic nephropathy. In five patients with nephritic syndrome, the biopsies also showed several diagnoses. CONCLUSIONS: Nephrotic syndrome was the major indication for renal biopsy, and membranous nephropathy was the most frequent diagnosis. Among patients with AKI and asymptomatic hematuria or proteinuria, different diagnoses were found with high levels of advanced chronic nephropathy.