Abstract
Background Critical illness in the intensive care unit (ICU) has been a global health priority. Systemic nutritional status has turned out to be related to the prognosis of critically ill patients. The albumin-globulin ratio (AGR) has been reported to be a novel prognostic factor of many diseases. This study is aimed at investigating whether the AGR could predict the mortality risk in critically ill patients. Methods We enrolled 582 adult patients admitted to the respiratory intensive care unit (RICU). We collected the clinical and laboratory data. X-tile software was used to determine the optimal cut-off values for the AGR. Patients were divided into three groups according to the AGR (low AGR group with AGR < 0.8, medium AGR group with AGR ranging from 0.8 to 1.1, and high AGR group with AGR > 1.1). Kaplan-Meier analysis was used for survival analysis. A Cox proportional hazard model was applied to the univariate and multivariate analyses for the potential predictors associated with survival. Results Our present study showed that the AGR was related to the 28-day survival of critically ill patients in the RICU. The rate of pneumonia in the low AGR group was significantly higher than that in the other groups. Patients with a lower AGR present an increased risk of 28-day mortality compared to patients with a higher AGR. Cox regression analysis showed that the AGR might be an independent predictor of prognosis to 28-day survival in critically ill patients in the RICU. Medium and high AGR values remained independently associated with better 28-day survival than low AGR values (HR: 0.484 (0.263-0.892) (p = 0.02); HR: 0.332 (0.166-0.665) (p = 0.002)). Conclusion The AGR might be an independent predictor of prognosis in critically ill patients.
Highlights
Critical illnesses in the intensive care unit (ICU), such as sepsis, could be a global health priority [1, 2]
We conducted a retrospective cohort study of 582 adult patients admitted to the respiratory intensive care unit (RICU) in the College of Demographics Gender Age (y) Comorbidity Pneumonia (n, %) Respiratory failure (n,%) Laboratory variables ALT ave (U/L) AST ave (U/L) direct bilirubin (DBIL) ave total bilirubin (TBIL) ave Patient outcomes 28-day mortality Length of stay days
Cox regression analysis showed that the albumin-globulin ratio (AGR) might be an independent predictor of prognosis to 28-day survival in critically ill patients in the RICU
Summary
Critical illnesses in the intensive care unit (ICU), such as sepsis, could be a global health priority [1, 2]. Some studies have shown that systemic nutritional status is related to the prognosis of critically ill patients [3]. We aimed to conduct this study to determine whether the AGR would predict survival in patients with critical illness. Systemic nutritional status has turned out to be related to the prognosis of critically ill patients. This study is aimed at investigating whether the AGR could predict the mortality risk in critically ill patients. Our present study showed that the AGR was related to the 28-day survival of critically ill patients in the RICU. Cox regression analysis showed that the AGR might be an independent predictor of prognosis to 28-day survival in critically ill patients in the RICU. The AGR might be an independent predictor of prognosis in critically ill patients
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