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Original article
Available online 17 February 2025
Association between lactate-to-albumin ratio and all-cause mortality in cirrhosis patients: Analysis of the MIMIC-IV database
Asociación entre la relación lactato/albúmina y la mortalidad por todas las causas en pacientes con cirrosis: Análisis de la base de datos MIMIC-IV
Yusong Yea,, Shu Huangb,c,, Xiaohong Wangd,, Wensen Rena, Xiaomin Shia, Sha Liua, Wei Zhanga, Lei Shia, Muhan Lüa,
Corresponding author
lvmuhan@swmu.edu.cn

Corresponding authors at: Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Street Taiping No. 25, Region Jiangyang, Luzhou 646099, Sichuan, China.
, Xiaowei Tanga,
Corresponding author
solitude5834@hotmail.com

Corresponding authors at: Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Street Taiping No. 25, Region Jiangyang, Luzhou 646099, Sichuan, China.
a Department of Gastroenterology, The Affiliated Hospital of Southwest Medical University, Luzhou, China
b Department of Gastroenterology, Lianshui County People’ Hospital, Huaian, China
c Department of Gastroenterology, Lianshui People’ Hospital of Kangda College Affiliated to Nanjing Medical University, Huaian, China
d Department of Gastroenterology, Xuzhou Central Hospital, Xuzhou Clinical School of Xuzhou Medical University, Xuzhou, China
Received 02 August 2024. Accepted 10 November 2024
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Tables (3)
Table 1. Characteristics and outcomes of participants categorized by LAR index.a
Table 2. Baseline characteristics of the 28-d survivors and 28-d non-survivors groups.
Table 3. Cox proportional hazard ratios (HR) for all-cause mortality.
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Additional material (3)
Abstract
Objective

This study evaluates the predictive value of the lactate/albumin ratio (LAR) for all-cause mortality in cirrhosis patients.

Design

Retrospective observational study.

Setting

Intensive care unit (ICU).

Patients or participants

626 first-time ICU-admitted cirrhosis patients in the USA (MIMIC-IV v2.2).

Interventions

None.

Main variables of interest

LAR index, 28-day, and 90-day all-cause mortality.

Results

Of 626 patients (60.86% male), 27.80% and 39.14% died within 28 and 90 days, respectively. Multivariate Cox analysis showed a significant association between higher LAR and mortality. Adjusted for confounders, elevated LAR increased the 28-day mortality risk [HR: 1.31 (1.21–1.42), P < 0.001]. A restricted cubic spline analysis revealed non-linear relationships between LAR and mortality. For 28-day mortality, the inflection point was 1.583: below this, HR was 2.29 (95% CI: 1.61–3.27, P < 0.001); above, HR was 1.16 (95% CI: 1.02–1.31, P = 0.021; P = 0.002). For 90-day mortality, the inflection point was 1.423: below, HR was 1.60 (95% CI: 1.04–2.47, P = 0.033); above, HR was 0.94 (95% CI: 0.75–1.16, P = 0.542; P = 0.012).

Conclusions

LAR predicts 28-day and 90-day mortality with a segmented effect. An LAR ≥1.583 signals high 28-day mortality risk, necessitating intensified monitoring and potential ICU admission. For 90-day mortality, LAR near 1.423 serves as an early warning for high-risk patients and guides interventions. Continuous LAR monitoring aids management, but prospective studies are needed to confirm clinical utility.

Keywords:
Lactate/albumin ratio
Cirrhosis
All-cause mortality
Prognosis
Cohort
MIMIC-IV database
Resumen
Objetivo

Evaluar el valor predictivo de la relación lactato/albumina (LAR) para la mortalidad en pacientes con cirrosis.

Diseño

Estudio observacional retrospectivo.

Ámbito

Unidad de cuidados intensivos.

Pacientes o participantes

626 pacientes con cirrosis ingresados por primera vez en la UCI en EE. UU. (MIMIC-IV v2.2).

Intervenciones

Ninguna.

Variables de interés principales

LAR, mortalidad a 28 y 90 días.

Resultados

De los 626 pacientes (60.86% hombres), el 27.80% y 39.14% fallecieron en 28 y 90 días, respectivamente. El análisis de Cox mostró que un LAR alto se asocia con mayor mortalidad. Ajustando por factores de confusión, el riesgo a 28 días aumentó [HR: 1.31 (1.21–1.42), P < 0.001]. El análisis con splines cúbicos reveló relaciones no lineales. A los 28 días, el punto de inflexión fue 1.583: por debajo, HR fue 2.29 (IC 95%: 1.61–3.27, P < 0.001); por encima, HR fue 1.16 (IC 95%: 1.02–1.31, P = 0.021). A los 90 días, el punto fue 1.423: por debajo, HR fue 1.60 (IC 95%: 1.04–2.47, P = 0.033); por encima, HR fue 0.94 (IC 95%: 0.75–1.16, P = 0.542).

Conclusiones

LAR predice la mortalidad a 28 y 90 días con un efecto segmentado. Un LAR ≥ 1.583 señala alto riesgo a 28 días, requiriendo mayor control y posible ingreso en UCI. A los 90 días, un LAR cercano a 1.423 actúa como advertencia temprana y guía intervenciones. La monitorización continua de LAR apoya la gestión clínica, pero se requieren estudios prospectivos para confirmar su utilidad.

Palabras clave:
Relación lactato/albúmina
Cirrosis
Mortalidad por todas las causas
Pronóstico
Cohorte
Base de datos MIMIC-IV

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