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Related Experiment Videos

The systemic septic response: concepts of pathogenesis.

F B Cerra1

  • 1Department of Surgery, University of Minnesota Hospital, Minneapolis 55455.

The Journal of Trauma
|December 1, 1990
PubMed
Summary

Persistent hypermetabolism after shock can lead to organ failure. Aerobic metabolism and systemic cytokine release, not just hypoxia, drive this progression, suggesting potential for reversible organ dysfunction.

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Area of Science:

  • Critical care medicine
  • Physiology
  • Immunology

Background:

  • Patients resuscitated from shock often enter a hypermetabolic state.
  • This state can progress to multi-organ failure and death.
  • Microcirculatory hypoxia's role diminishes as organ failure advances.

Purpose of the Study:

  • To explore the metabolic and inflammatory mechanisms driving post-shock organ failure.
  • To investigate the role of aerobic metabolism and cytokine signaling in persistent hypermetabolism.
  • To identify potential therapeutic targets for reversing organ dysfunction.

Main Methods:

  • Review of epidemiologic, physiologic, and metabolic data.
  • Analysis of current understanding of cellular interactions and cytokine release.
  • Hypothetical modeling of counter-regulatory mechanisms.

Main Results:

  • Aerobic metabolism is the primary mechanism for meeting energy demands in hypermetabolism.
  • Systemic cytokine release and local cell-cell interactions significantly impact organ function.
  • Hypoxia is less critical than initially presumed in later stages of organ failure.

Conclusions:

  • Persistent hypermetabolism involves complex aerobic metabolic and inflammatory pathways.
  • Cytokine-mediated systemic effects are key drivers of organ dysfunction.
  • Therapeutic strategies targeting these pathways may reverse organ failure if timed correctly.

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