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Índice DHL-neutrófilos-linfocitos como predictor de mortalidad a 28 días en pacientes con COVID 19 / LDH-neutrophil-lymphocyte index as a predictor of 28-day mortality in patients with COVID-19
Resumen
Resumen
Introducción: la enfermedad por coronavirus del 2019 (COVID-19) es la mayor crisis sanitaria de nuestros tiempos; fue declarada pandemia por la OMS en marzo de 2020. El riesgo de presentar enfermedad grave es interindividual y varía según la edad, las comorbilidades, el estado inmunológico y la variante del virus. La relación neutrófilos/linfocitos (RNL) y la deshidrogenasa láctica (DHL) son marcadores muy utilizados para evaluar la gravedad y predecir el curso de la enfermedad en pacientes con COVID-19, con una relación directa de mayor valor-peor pronóstico.
Objetivo: comprobar si el índice DHL-neutrófilos-linfocitos calculado con estudios de laboratorio tomados en las primeras 24 horas de ingreso a hospital es útil como predictor de mortalidad a 28 días en pacientes adultos con diagnóstico de COVID-19.
Material y métodos: estudio de tipo cohorte retrospectivo y analítico. Se incluyeron consecutivamente todos los pacientes mayores de 16 años de cualquier género, ingresados en un hospital de tercer nivel de marzo de 2020 a marzo de 2021, los cuales presentaron diagnóstico de COVID-19 con PCR positiva de SARS-CoV-2.
Resultados: los niveles más altos del índice DHLNL se asociaron con una mayor mortalidad en pacientes hospitalizados por COVID-19 (Q2 frente a Q1: RR 1.52 [1.24-1.87], p < 0.05; Q3 frente a Q1: RR 1.87 [1.55-2.25], p < 0.05; y Q4 frente a Q1: RR 2.74 [2.22-3-39], p < 0.05).
Conclusiones: el índice DHLNL en suero tomado en las primeras 24 horas del ingreso puede ayudar a identificar de manera temprana entre los pacientes hospitalizados por COVID-19 a aquellos con mayor riesgo de mortalidad.
Abstract
Background: Coronavirus disease 2019 (COVID-19) represents the greatest health crisis of our times; it was declared by WHO a pandemic in March 2020. The risk of presenting a severe disease is inter-individual, since it varies according to age, comorbidities, and immunological status, in addition to the type of SARS-CoV-2 variant. The neutrophil/lymphocyte ratio (NLR) and lactic dehydrogenase (LDH) are widely used markers to assess the severity and predict the course of the disease in patients with COVID-19, with a direct relationship of higher value-worse prognosis.
Objective: To verify if the LDH-neutrophil-lymphocyte index calculated from laboratory tests taken within the first 24 hours of admission is useful as a predictor of 28-day mortality in adult patients diagnosed with COVID-19.
Material and methods: Retrospective and analytical cohort study. All consecutive patients over 16 years of any gender, admitted to a tertiary care center from March 2020 to March 2021, who had a diagnosis of COVID-19 with a positive PCR for SARS-CoV-2, were included.
Results: Higher levels of the LDHNL index were associated with higher mortality in patients hospitalized for COVID-19 (Q2 vs. Q1: RR 1.52 [1.24-1.87], p < 0.05; Q3 vs. Q1: RR 1.87 [1.55-2.25], p < 0.05; and Q4 vs. Q1: RR 2.74 [2.22-3-39], p < 0.05).
Conclusions: The serum LDHNL index taken in the first 24 hours of admission can help to predict early the risk of mortality in hospitalized patients with COVID-19.
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