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Inicio Acta Colombiana de Cuidado Intensivo C-reactive protein to albumin ratio in critical care settings
Journal Information
Vol. 23. Issue 3.
Pages 255-266 (July - September 2023)
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Vol. 23. Issue 3.
Pages 255-266 (July - September 2023)
Original article
C-reactive protein to albumin ratio in critical care settings
Índice proteína C reactiva-albúmina en escenarios de cuidados intensivos
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204
María Vargas-Hernandeza, Miguel Aguilar-Schotborgha,b,c,
Corresponding author
maguilars3@unicartagena.edu.co

Corresponding author.
, José Rojas-Suareza,b,d,e, Sandra Contreras-Arrietaa,f, Liseth García-Uribea, Wilfrido Coronell-Rodrigueza,b,d, Carmelo Dueñas-Castella,b,d
a Intensive Care and Obstetrics Research Group (GRICIO), Universidad de Cartagena, Cartagena de Indias, Colombia
b Gestión Salud Clinic, Cartagena de Indias, Colombia
c Internal Medicine Department, Pontifica Universidad Javeriana, Bogotá, Colombia
d Intensive Care Department, Universidad de Cartagena, Cartagena de Indias, Colombia
e GINUMED Research Group, Corporación Universitaria Rafael Nuñez, Cartagena de Indias, Colombia
f Anaesthesia Department, Universidad Militar Nueva Granada, Bogotá, Colombia
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Tables (3)
Table 1. Clinical characteristics of the included patients at ICU admission.
Table 2. Albumin, CPR parameters and fluid balance of participants included in the study.
Table 3. CAR cut-off points and diagnostic performance at admission and on Day 3 for interest outcomes in critical care patients without and with COVID-19.
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Additional material (1)
Abstract
Purpose

Compare the performance of the C-reactive protein to albumin ratio (CAR) in predicting in-hospital death between patients with and without COVID-19.

Materials and methods

This prospective cohort study included critically ill patients with and without COVID-19. CAR was obtained at admission and on Day 3, along with fluid balance and other predictive scores. The primary outcome was all-cause in-hospital death, and the Youden index was used to determine CAR cut-off points.

Results

We included the data of 176 patients; 85 had COVID-19. All-cause in-hospital death was 31.3%. The CAR cut-off points for patients without COVID-19 were 28.5mg/g and 31.6mg/g at admission and on Day 3, respectively, and 13.5mg/g and 7.4mg/g for COVID-19 patients. Day 3 CAR was a better predictor of all-cause in-hospital death than CAR at admission in both groups. Non-survivors in the COVID and non-COVID groups had higher positive fluid balance rates than survivors.

Conclusions

The CAR predicted in-hospital death in both groups, with different cut-off points. CAR on Day 3 had better diagnostic performance than that at admission. Cumulative fluid balance may influence CAR kinetics. An optimal CAR cut-off point for critically ill patients, optimal measuring time, and impact of fluids therapy still need to be established.

Keywords:
COVID-19
Critical care
Mortality
C-reactive protein
Albumin
Abbreviations:
AUC
APACHE II
CAR
CLI
CRP
GIPS
ICU
IMV
IQR
NPV
PPV
SE
SOFA
SP
Resumen
Objetivo

Comparar el rendimiento del índice proteína C reactiva-albúmina (CAR) en predicción de mortalidad hospitalaria entre pacientes con y sin COVID-19.

Materiales y métodos

Estudio de cohorte prospectivo, que incluyó pacientes críticamente enfermos con y sin COVID-19. CAR fue obtenido al ingreso y el día 3, además del balance hídrico y otras escalas predictoras. El desenlace primario fue un compuesto de mortalidad hospitalaria por todas las causas, y se utilizó el índice de Youden para determinar los puntos de corte de CAR.

Resultados

Se incluyeron 176 pacientes, 85 con COVID-19. La mortalidad hospitalaria fue del 31,3%. El punto de corte de CAR para pacientes con COVID-19 fue de 28,5 y 31,6mg/g a la admisión y el día 3, respectivamente, y para pacientes sin COVID-19 fue de 13,5 y 7,4mg/g. En ambos grupos, el CAR el día 3 fue mejor predictor de mortalidad hospitalaria que el tomado a la admisión. Los no-sobrevivientes en los grupos de COVID y no-COVID tuvieron mayores niveles de balance de hídricos comparados con los sobrevivientes.

Conclusiones

El CAR predijo la mortalidad hospitalaria en ambos grupos, con puntos de corte diferentes. CAR el día 3 tuvo mejor rendimiento pronóstico que el tomado a la admisión. El balance hídrico acumulado pudo haber influido en la cinética del CAR. Aún se necesita establecer un punto de corte óptimo del CAR en pacientes críticamente enfermos, el tiempo de medición óptimo y el impacto de la terapia hídrica.

Palabras clave:
COVID-19
Cuidado intensivo
Mortalidad
Proteína C reactiva
Albúmina

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