Incidence, Clinical Characteristics and Outcomes of Early Hyperbilirubinemia in Critically ill Patients - Insights From The Mars Study

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Abstract

OBJECTIVE: To investigate the incidence, clinical characteristics and outcomes of early hyperbilirubinemia in critically ill patients. DESIGN AND SETTING: This is a post hoc analysis of a prospective multicenter cohort study. PATIENTS: Patients with measured bilirubin levels within the first 2 days after ICU admission were eligible. Patients with liver cirrhosis were excluded. ENDPOINTS: The primary endpoint was the incidence of early hyperbilirubinemia, defined as bilirubin ≥33 μmol/L within 2 days after ICU admission. Secondary endpoints included clinical characteristics of patients with versus patients without early hyperbilirubinemia, and outcomes up to day 30. RESULTS: Of 4,836 patients, 559 (11.6%) patients had early hyperbilirubinemia. Compared to patients without early hyperbilirubinemia, patients with early hyperbilirubinemia presented with higher severity of illness scores, and higher incidences of sepsis and organ failure. After adjustment for confounding variables, early hyperbilirubinemia remained associated with mortality at day 30 (odds ratio, 1.31 [95%-confidence interval 1.06-1.60]; P = 0.018). Patients with early hyperbilirubinemia and thrombocytopenia (interaction P-value = 0.005) had a higher likelihood of death within 30 days (odds ratio, 2.61 [95%-confidence interval 2.08-3.27]; P < 0.001) than patients with early hyperbilirubinemia and a normal platelet count (odds ratio, 1.09 [95%-confidence interval 0.75-1.55]; P = 0.655). CONCLUSIONS: Early hyperbilirubinemia occurs frequently in the critically ill, and these patients present with higher disease severity and more often with sepsis and organ failures. Early hyperbilirubinemia has an association with mortality, albeit this association was only found in patients with concomitant thrombocytopenia.

Original languageEnglish
Pages (from-to)161-167
Number of pages7
JournalShock (Augusta, Ga.)
Volume57
Issue number2
Early online date7 Jul 2021
DOIs
Publication statusPublished - 1 Feb 2022

Keywords

  • Bilirubin
  • Critical illness
  • Hepatic dysfunction
  • Inflammation
  • Mortality
  • SOFA score
  • Sepsis
  • Thrombocytopenia

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