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Inicio Revista Española de Geriatría y Gerontología Neutrophil-to-lymphocyte ratio is not associated with risk of sarcopenia in elde...
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Vol. 57. Issue 6.
Pages 325-329 (November - December 2022)
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Vol. 57. Issue 6.
Pages 325-329 (November - December 2022)
Brief report
Neutrophil-to-lymphocyte ratio is not associated with risk of sarcopenia in elderly COVID-19 patients
La proporción de neutrófilos a linfocitos no está asociada con el riesgo de sarcopenia en pacientes ancianos con COVID-19
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Jefferson Silva, Bruna M. Giglio, Patrícia C.B. Lobo, Vanessa A. Araújo, Gustavo D. Pimentel
Corresponding author
gupimentel@yahoo.com.br

Corresponding author.
Faculty of Nutrition, Federal University of Goiás, Goiânia, Brazil
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Abstract
Background

To assess the existence of association between neutrophil to lymphocyte ratio (NLR) and the risk of sarcopenia in COVID-19 patients.

Methods

A retrospective cross-sectional study was conducted in a university hospital with patients with an active COVID-19 infection admitted to the nursing ward or intensive care unit (ICU) between September to December 2020. Sarcopenia risk was assessed using the Strength, Assistance for walking, Rise from a chair, Climb stairs and Falls (SARC-F). Biochemical analyses were assessed by circulating of C-reactive protein, D-dimer, neutrophils, lymphocytes count and NLR. Sixty-eight patients were evaluated and divided into tertiles of NLR values and the association between NLR and sarcopenia risk were tested using the linear regression analyses and p<0.05 were considered as significant.

Results

Sixty-eight patients were evaluated and divided in NLR tertiles being the 1st (men=52.2%; 71.1±9.0 y; NLR: 1.1–3.85), 2nd (women=78.3%; 73.2±9.1 y; NLR: 3.9–6.0) and 3rd (men=72.7%; 71.7±10.4 y; NLR: 6.5–20.0). There was a difference between the tertiles in relation to the first to the biochemical parameters of total neutrophils count (p=0.001), C-reactive protein (p=0.012), and D-dimer (p=0.012). However, no difference was found in linear regression analysis between tertiles of NLR and SARC-F, if in total sample (p=0.054) or divided by sex, if men (p=0.369) or women (p=0.064).

Conclusion

In elderly patients hospitalized with COVID-19, we do not find an association between the risk of sarcopenia and NLR.

Keywords:
Inflammation
COVID-19
Sarcopenia
SARC-F
Resumen
Objetivo

Evaluar la existencia de asociación entre la relación neutrófilos a linfocitos (RNL) y el riesgo de sarcopenia en pacientes con COVID-19.

Métodos

Se realizó un estudio transversal retrospectivo en un hospital universitario con pacientes con infección activa por COVID-19 ingresados en sala de enfermería o unidad de cuidados intensivos (UCI) entre septiembre a diciembre de 2020. El riesgo de sarcopenia se evaluó utilizando: fuerza, ayuda para caminar, levantarse de una silla, subir escaleras y caídas (SARC-F). Los análisis bioquímicos se evaluaron mediante circulación de proteína C reactiva, dímero D, neutrófilos, recuento de linfocitos y RNL. Sesenta y ocho pacientes fueron evaluados y divididos en terciles de valores de RNL y la asociación entre RNL y el riesgo de sarcopenia se evaluó mediante análisis de regresión lineal; p<0,05 se consideró significativo.

Resultados

Sesenta y ocho pacientes fueron evaluados y divididos en terciles de RNL, siendo el primero (hombres=52,2%; 71,1±9,0años; RNL: 1,1-3,85), el segundo (mujeres=78,3%; 73,2±9,1años; RNL: 3,9-6,0) y el tercero (hombres=72,7%; 71,7±10,4años; RNL: 6,5-20,0). Hubo diferencia entre los terciles con relación al primero en los parámetros bioquímicos de recuento de neutrófilos totales (p=0,001), proteínaC reactiva (p=0,012) y dímeroD (p=0,012). Sin embargo, no se encontró diferencia en el análisis de regresión lineal entre terciles de RNL y SARC-F, si en muestra total (p=0,054) o dividida por sexo, si hombres (p=0,369) o mujeres (p=0,064).

Conclusiones

En pacientes ancianos hospitalizados con COVID-19 no encontramos asociación entre el riesgo de sarcopenia y RNL.

Palabras clave:
Inflamación
COVID-19
Sarcopenia
SARC-F

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