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Related Experiment Videos

Elevated methemoglobin in patients with sepsis

K Ohashi1, H Yukioka, M Hayashi

  • 1Department of Anesthesiology and Intensive Care Medicine, Osaka City University Medical School, Japan.

Acta Anaesthesiologica Scandinavica
|August 5, 1998
PubMed
Summary

Blood methemoglobin levels are significantly elevated in patients experiencing sepsis or septic shock. This finding suggests methemoglobin may serve as a valuable early indicator for sepsis onset.

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Area of Science:

  • Critical care medicine
  • Biochemistry
  • Pathophysiology

Background:

  • Sepsis is associated with increased nitric oxide (NO) production.
  • Nitric oxide is converted to methemoglobin and nitrate in the body.
  • Elevated methemoglobin levels may indicate the presence of sepsis.

Purpose of the Study:

  • To investigate if blood methemoglobin concentrations are higher in patients with sepsis or septic shock.
  • To evaluate methemoglobin as a potential biomarker for sepsis.

Main Methods:

  • A study involving 45 critically ill patients (septic, septic shock, and non-septic controls).
  • Blood methemoglobin levels were measured during septic episodes and at recovery.
  • Methemoglobin levels in non-septic patients were measured at ICU admission and discharge.

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Main Results:

  • Blood methemoglobin levels were significantly higher in patients with sepsis or septic shock compared to non-septic controls (P < 0.05).
  • Methemoglobin levels were also higher during sepsis/septic shock than at recovery or pre-sepsis onset.

Conclusions:

  • Blood methemoglobin concentration shows potential as a useful marker for detecting the onset of sepsis or septic shock.
  • Further research may validate methemoglobin as a clinical diagnostic tool for sepsis.