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June 19, 2026Blood Purification

Creatinine Paradox in CRRT: Higher Levels, Lower Mortality – A MIMIC-IV Validation Study

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Authors

YWYang WangJQJianmin QuTWTingting Wang

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Overview

Retrospective cohort study explores the surprising link between higher creatinine levels and reduced mortality in critically ill AKI patients undergoing CRRT, suggesting the need for further research.

Key Points

  • This study investigates the relationship between serum creatinine levels at CRRT initiation and in-hospital mortality in critically ill patients with acute kidney injury.
  • Retrospective cohort study using MIMIC-IV database with 989 AKI patients
  • Categorized serum creatinine levels into quartiles at CRRT initiation
  • Employed Kaplan-Meier curves and Cox proportional hazards models for mortality analysis.
  • Higher serum creatinine levels were associated with lower in-hospital mortality risks.
  • Cox regression confirmed increased mortality risk in the lowest creatinine quartile (p<0.05).
  • RCS analysis revealed an L-shaped relationship with an inflection point at 5.75 mg/dL.

Cite This Study

Wang et al. (2026) studied this question.

synapsesocial.com/papers/6a34ddaf65a5b0777af2d5e4https://doi.org/10.1159/000553056
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