COVID-19: hypernatremia is a significant predictor of mortality

Introduction: Coronavirus disease 2019 (COVID-19) pandemic spread rapidly, creating a worrisome scenario worldwide. In hospitalized patients, dysnatremia (hyponatremia and/or hypernatremia) is the most common electrolyte disturbance, reported in 30­40% of cases and associated with a poor prognosis. This study aimed to evaluate the association between dysnatremia and mortality in hospitalized patients infected with SARS-COV-2. Methods: Retrospective longitudinal study that analyzed data from hospital records of 1,000 patients with COVID-19 (median age, 62.5 years; 57.1% men), including 109 (10.9%) deaths. Kaplan-Meier survival curves and Cox proportional hazard models with Hazard Ratio (HR) with 95% confidence intervals (95%CI) were applied to confirm the association between dysnatremia (hyponatremia and/or hypernatremia) and death. Results: Hypernatremia was detected in 83 (76.1%) of the patients who died, with a cumulative reduction in survival (p < 0.01) and a 2.42-fold increased mortality risk (95%CI: 1.45­2.91). In the multivariable analysis, hypernatremia was the main factor associated with increased mortality (HR: 1.50; 95%CI: 1.23­1.81). Long length of stay (LOS) (HR: 1.54; 95%CI: 1.21­1.78), old age (HR: 1.63; 95%CI: 1.28­1.88), and chronic kidney disease (HR: 1.77; 95%CI: 1.21­3.30) were also associated with death. Conclusion: Hypernatremia during hospitalization is an important risk factor for poor prognosis and an increased mortality risk. LOS, old age, and chronic kidney disease could also be used for risk stratification in patients with COVID-19.

Caracterización de recién nacidos a término con deshidratación hipernatrémica / Characterization of full term newborns with hypernatremic dehydration

INTRODUCCIÓN: La deshidratación hipernatrémica neonatal es una condición grave y su incidencia se ha incre mentado en los últimos años, repercutiendo en complicaciones que llevan a la hospitalización del recién nacido. OBJETIVO: Describir las características clínicas y de laboratorio de recién nacidos a término con diagnóstico de deshidratación hipernatremica. PACIENTES Y MÉTODO: Estudio observacional descriptivo de recién nacidos a término que se hospitalizaron por deshidratación hiperna trémica entre los años 2014 y 2016. Se incluyeron recién nacidos a término mayores de 37 semanas con signos clínicos de deshidratación (mucosas secas, fontanela deprimida, llanto sin lágrimas, signos de pliegue cutáneo) y/o pérdida excesiva de peso mayor de 7% y sodio sérico mayor a 145 mEq/L. Se registraron variables sociodemográficas y bioquímicas para su análisis. RESULTADOS: Se incluyeron 43 neonatos. El 60,5% de sus madres fueron primigestantes, el 90% de los neonatos recibieron lactancia materna exclusiva, las madres reportaron problemas en la lactancia materna en el 76,7%. La pérdida de peso al ingreso con respecto al peso de nacimiento fue de 15,3% en promedio. El 83,3% contaba con seguro de salud público. 65,1% presentó signos clínicos de deshidra tación al ingreso y 83,5% signos neurológicos transitorios. El promedio de sodio fue de 155 mEq/L al ingreso. El descenso de sodio en las primeras 24 horas de manejo fue 7,74 mEq/L (0,32mEq/L por hora). La corrección de la hipernatremia fue en el 55,8% por vía oral y la estancia hospitalaria de 4 días en promedio. CONCLUSIONES: Los problemas de alimentación se presentaron en un (76%) madres primigestantes en un (88,4%). El 90,6% de esta población administraban lactancia materna exclusiva, resultados que pueden contribuir para alertar al profesional de la salud a identificar de forma oportuna, signos de alarma y un control precoz posterior al alta del puerperio y a la toma de medidas preventivas.

INTRODUCTION: The hypernatremic neonatal dehydration is a severe condition whose incidence has increased in recent years resulting in complications leading to the hospitalization of the newborn. OBJECTIVE: Describe the clinical and laboratory characteristics of term-newborns with Hypernatremic Dehy dration diagnosis. PATIENTS AND METHOD: Descriptive observational study of hospitalized term- newborns due to hypernatremic dehydration between a period from 2014 to 2016. Term newborns over 37 weeks with clinical signs of dehydration (dry mucous membranes, depressed fontanel, tear less crying, signs of the cutaneous pleat), and/or excessive weight loss greater than 7% and serum sodium greater than 145 mEq/L were included. Sociodemographic and biochemical variables were recorded for analysis. RESULTS: 43 neonates were included. 60.5 percent of their mothers were pri- miparous, 90 percent of neonates received exclusive breastfeeding, mothers reported breastfeeding problems in 76.7 percent. Incoming neonates reported weight loss compared to birth weight at 15.3% on average. 83.3% had public health insurance. 65.1% had dehydration clinical signs at entry and 83.5% transient neurological signs. The average sodium was 155 mEq/L at revenue. The sodium decrease in the first 24 hours of handling was 7.74 mEq/L (0.32mEq/L per hour). The correction of the hypernatremia was 55.8% by oral intake and 4 days hospital stay on average. CONCLUSIONS: The feeding's problems came up in a (76%), primiparous mothers in an (88.4%). 90.6 percent of this population administered exclusive breastfeeding, results that can help to alert the health professional to timely identification, warning signs, and early post-discharge control and preventive measures.

Análise do comportamento do sódio ao longo de 24 horas de terapia renal substitutiva / Insights about serum sodium behavior after 24 hours of continuous renal replacement therapy

RESUMO Objetivo: Investigar os fatores clínicos e laboratoriais associados com a variação dos níveis séricos de sódio durante terapia renal substitutiva contínua e avaliar se a fórmula de mixagem perfeita pode prever a variação do sódio nas 24 horas. Métodos: A partir de uma base de dados coletada de forma prospectiva, recuperamos e analisamos os dados referentes a 36 sessões de terapia renal substitutiva realizadas em 33 pacientes, nas quais a prescrição de afluentes permaneceu inalterada durante as primeiras 24 horas. Aplicamos um modelo linear misto para investigar os fatores associados com grandes variações dos níveis séricos de sódio (≥ 8mEq/L) e geramos um gráfico de Bland-Altman para avaliar a concordância entre as variações previstas e observadas. Resultados: Nas sessões de terapia renal substitutiva de 24 horas identificamos que SAPS 3 (p = 0,022) e hipernatremia basal (p = 0,023) foram preditores estatisticamente significantes de variações séricas do sódio ≥ 8mEq/L na análise univariada, porém apenas hipernatremia demonstrou uma associação independente (β = 0,429; p < 0,001). A fórmula de mixagem perfeita para previsão do nível de sódio após 24 horas demonstrou baixa concordância com os valores observados. Conclusões: A presença de hipernatremia por ocasião do início da terapia renal substitutiva é um fator importante associado com variações clinicamente significativas dos níveis séricos de sódio. O uso de citrato 4% ou da fórmula A de ácido citrato dextrose 2,2% como anticoagulantes não se associou com variações mais acentuadas dos níveis séricos de sódio. Não foi viável desenvolver uma predição matemática da concentração do sódio após 24 horas.

ABSTRACT Objective: The aim of this study was to investigate the clinical and laboratorial factors associated with serum sodium variation during continuous renal replacement therapy and to assess whether the perfect admixture formula could predict 24-hour sodium variation. Methods: Thirty-six continuous renal replacement therapy sessions of 33 patients, in which the affluent prescription was unchanged during the first 24 hours, were retrieved from a prospective collected database and then analyzed. A mixed linear model was performed to investigate the factors associated with large serum sodium variations (≥ 8mEq/L), and a Bland-Altman plot was generated to assess the agreement between the predicted and observed variations. Results: In continuous renal replacement therapy 24-hour sessions, SAPS 3 (p = 0.022) and baseline hypernatremia (p = 0.023) were statistically significant predictors of serum sodium variations ≥ 8mEq/L in univariate analysis, but only hypernatremia demonstrated an independent association (β = 0.429, p < 0.001). The perfect admixture formula for sodium prediction at 24 hours demonstrated poor agreement with the observed values. Conclusions: Hypernatremia at the time of continuous renal replacement therapy initiation is an important factor associated with clinically significant serum sodium variation. The use of 4% citrate or acid citrate dextrose - formula A 2.2% as anticoagulants was not associated with higher serum sodium variations. A mathematical prediction for the serum sodium concentration after 24 hours was not feasible.

Perfil de doadores efetivos do serviço de procura de órgãos e tecidos / Profile of effective donors from organ and tissue procurement services

Objetivo: Caracterizar o perfil dos doadores efetivos de órgãos e tecidos além de conhecer quais órgãos e tecidos foram doados para transplantes. Métodos: Estudo quantitativo, descritivo, exploratório e retrospectivo, analisando-se os dados de prontuários de 305 doadores, entre janeiro de 2006 a dezembro de 2010, os quais foram submetidos à análise descritiva com confecção de tabelas de frequência, medidas de posição (média, mínimo e máximo) e dispersão (desvio-padrão) para os dados de caráter social e clínico. Resultados: Houve predomínio de indivíduos brancos (72%), do gênero masculino (55%), idade entre 41 e 60 anos (44%), sendo a principal causa de morte encefálica o acidente vascular encefálico (55%). Quanto aos antecedentes, 31% foram classificados na categoria de sobrepeso, seguidos de hipertensão arterial sistêmica (27%) e o diabetes mellitus encontrado em apenas 4,3% dos doadores. O uso de drogas vasoativas esteve presente em 92,7% dos doadores, e a principal droga utilizada foi a noradrenalina (81,6%). A hiperglicemia e a hipernatremia foram encontradas em 78% e em 71% dos doadores, respectivamente. Conclusão: Foram encontradas importantes alterações hemodinâmicas, e os resultados mostram o uso de drogas vasoativas como a principal estratégia para seu controle. Ademais, a maioria dos doadores apresentou hiperglicemia e hipernatremia, achados frequentes no quadro de morte encefálica, e que, por sua persistência, sugerem manutenção inadequada do doador de órgãos. .

Objective: To characterize the profile of effective organ and tissue donors and to understand which organs and tissues were donated for transplantation. Methods: This was a quantitative, descriptive, exploratory, retrospective study that analyzed clinical data from 305 donors between January 2006 to December 2010. The data were then analyzed using descriptive analyses, generating frequency tables, measures of position (mean, minimum and maximum) and measures of dispersion (standard deviation) for data that was social and clinical in nature. Results: There was an overall predominance of white (72%) and male (55%) individuals between the ages of 41 and 60 years (44%). The primary cause of brain death was cerebrovascular accident (55%). In the patient history, 31% of the patients were classified as overweight, 27% as hypertensive and only 4.3% as having diabetes mellitus. Vasoactive drugs were used in 92.7% of the donors, and the main drug of choice was noradrenaline (81.6%). Hyperglycemia and hypernatremia were diagnosed in 78% and 71% of the donors, respectively. Conclusion: Significant hemodynamic changes were found, and the results indicate that the use of vasoactive drugs was the main strategy used to control these changes. Furthermore, most donors presented with hyperglycemia and hypernatremia, which were frequently reported in association with brain death. The persistent nature of these findings suggests that the organ donors were inadequately maintained. .

Frequency of dysnatremia and dyskalemia in cardiac surgical intensive care unit

To determine the frequency of dysnatremia and dyskalemiain cardiac surgical intensive care unit patients and to identify the factors associated with the changes in potassium and sodium levels. Cross Sectional study. Cardiac surgical intensive care unit [ICU] of Armed Forces Institute of Cardiology / National Institute of Heart Diseases [AFIC/NIHD] from July 2013 to November 2013. Post-operative patients in cardiac surgical intensive care unit were selected through non probability convenient sampling. Demographic and clinical data was collected for all patients including: age, sex etc. Additionally, laboratory data such as potassium and sodium serum concentrations were recorded of day one of the first five post operative days. Out of 100 patients, 51% had dyskalemia, 33% had episodes of hypokalemia, and 19% had hyperkalemia. On the other hand 79% patients had dysnatremia, among them 71%had hyponatremia, and 8% had hypernatremia. Dyskalemia and dysnatremia are common problems in cardiac surgical ICU with higher frequency of hyponatremia as compared to hypernatremia, and hypokalemia as compared to hyperkalemia

Dehydration and hypernatremia in breast-fed term healthy neonates.

OBJECTIVE: The aim of the study was to determine the incidence of significant weight loss, dehydration, hypernatremia and hyperbilirubinemia in exclusively breast-fed term healthy neonates and compare the incidence of these problems in the warm and cool months. METHODS: During the study period 496 neonates were recruited. RESULTS: 157 neonates (31.6%) had significant weight loss (> 10 % cumulative weight loss or per day weight loss > 5%). Clinical dehydration was present in 2.2% of neonates. Of these 157 neonates, 31.8% had hypernatremia and 28 % had hyperbilirubinemia. CONCLUSION: The incidence of the above mentioned problems were higher in the warm months but the difference was not statistically significant.

Deshidratación hipernatrémica en recién nacidos de término de peso adecuado, alimentados exclusivamente a pecho: a propósito de dos casos / Hypernatremic dehydration in full-term newborn infants of adequate weight, exclusively breast fed: apropos of 2 cases

La lactancia materna constituye la forma de alimentación más adecuada en los primeros meses de la vida de un niño. Debemos fomentar esta forma de alimentación mediante la información adecuada a cada madre, así como también detectar problemas tanto en la técnica como en el volumen y componentes de la leche materna. Cuando esto no se cumple se puede afectar de diversas maneras al recién nacido alimentado exclusivamente a pecho. Existen reportes en la literatura de recién nacidos que padecieron deshidratación hipernatrémica (DHH), con el detalle de sus severos cursos clínicos, que requirieron un gran esfuerzo terapéutico y en muchos de ellos el padecimiento de importantes secuelas. El hallazgo de dos casos de DHH, en recién nacidos de término de peso adecuado, en los que se observó una concentración elevada de Na en la leche de sus madres, motivó esta publicación. Con el motivo de comparar con la literatura los valores de sodio en leche de madres y comprobar que los obtenidos en los casos detallados fueron realmente elevados se realizó en 28 muestras de leche de transición de madres que concurrieron a los consultorios externos de nuestra maternidad. Resultados: media: 19,41 mEq/l, error standard: 1,04 mEq/l, mediana: 19 mEq/l. CV: 28.3 por ciento. Valor máximo obtenido: 36 mEq/l, valor mínimo hallado: 13 mEq/l. Los valores hallados de Na en la leche de las madres de los casos informados se encontrarían elevados para los encontrados en la bibliografía (13 ñ 3mEq/l) y para los de nuestra población (p<0,001).