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Related Experiment Videos

The logistic organ dysfunction score as a tool for making ethical decisions.

Stephan Ehrmann1, Emmanuelle Mercier, Philippe Bertrand

  • 1Service de réanimation médicale polyvalente, Hôpital Bretonneau, Centre hospitalier universitaire de Tours, 37 044 Tours cedex 9, France. stephanehrmann@yahoo.co.uk

Canadian Journal of Anaesthesia = Journal Canadien D'Anesthesie
|April 26, 2006
PubMed
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The change in the logistic organ dysfunction score (LOD) from day one to day four in the intensive care unit (ICU) can predict patient mortality. A higher DeltaLOD indicates an increased risk of death.

Area of Science:

  • Critical Care Medicine
  • Prognostic Biomarkers
  • Intensive Care Unit Outcomes

Background:

  • Assessing patient prognosis in the ICU is crucial for clinical decision-making.
  • Therapeutic limitations (TL) decisions require reliable predictive tools.
  • The logistic organ dysfunction (LOD) score is a measure of organ dysfunction.

Purpose of the Study:

  • To determine if the change in LOD between the first and fourth day in the ICU (DeltaLOD) predicts mortality.
  • To evaluate DeltaLOD's utility in guiding therapeutic limitation decisions.

Main Methods:

  • 154 patients were initially included; 93 remained after exclusions (ICU discharge or TL before 72 hours).
  • LOD was calculated on admission (LOD1) and between 72-96 hours (LOD4).

Related Experiment Videos

  • DeltaLOD (LOD4-LOD1) was analyzed for association with mortality, calculating sensitivity, specificity, PPV, and NPV.

    • Main Results:

    • Patients who died in the ICU had a significantly higher DeltaLOD compared to survivors (P=0.0046).
    • Logistic regression showed high DeltaLOD independently predicted ICU death, irrespective of initial disease severity.
    • A DeltaLOD cutoff of >= 4 had a positive predictive value (PPV) of 0.66 for ICU death; a cutoff of >= 1 had a negative predictive value (NPV) of 0.89.

    Conclusions:

    • DeltaLOD is a significant predictor of ICU mortality, independent of initial disease severity.
    • While the NPV of DeltaLOD is useful for identifying low-risk patients, its PPV is insufficient for individual therapeutic limitation decisions.
    • Further evaluation of DeltaLOD in more severely ill patient populations is warranted.