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Acute inflammation produces a coordinated set of local and systemic changes that limit injury, eliminate pathogens, and initiate repair. These responses arise within minutes of infection, trauma, or chemical insult and are driven by vascular alterations and leukocyte-derived mediators. When the stimulus resolves, the reaction typically abates within days.Local EffectsAt the site of injury, arteriolar vasodilation increases blood flow, resulting in redness and warmth. Simultaneously, increased...
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A Reproducible Intensive Care Unit-Oriented Endotoxin Model in Rats
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Published on: February 20, 2021

Pathophysiology of sepsis.

Daniel G Remick1

  • 1Boston University School of Medicine, Boston, MA, USA. remickd@bu.edu

The American Journal of Pathology
|April 26, 2007
PubMed
Summary

Sepsis involves complex, heterogeneous responses affecting multiple organ systems, including coagulation and immune cells. Understanding these diverse alterations is key to improving critical care for septic patients.

Area of Science:

  • Critical care medicine
  • Pathophysiology
  • Immunology

Background:

  • Sepsis presents a significant challenge in critical care, marked by high morbidity and mortality.
  • Despite advancements, sepsis pathophysiology involves complex, multi-system derangements.
  • Historically viewed as hyperinflammation, sepsis now shows heterogeneous immune responses.

Purpose of the Study:

  • To review the multifaceted pathophysiological alterations in sepsis.
  • To highlight the heterogeneity in inflammatory and cellular responses.
  • To emphasize the need for individualized monitoring and treatment.

Main Methods:

  • Literature review of sepsis pathophysiology.
  • Analysis of immune, cellular, and metabolic derangements.

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  • Discussion of coagulation system alterations.

    • Main Results:

    • Sepsis involves significant, life-threatening alterations in the coagulation system.
    • Inflammatory responses in sepsis are heterogeneous, with some patients showing immune suppression.
    • Cellular changes, including neutrophil activation and lymphocyte apoptosis, contribute to sepsis severity.
    • Metabolic derangements require close, individualized monitoring.

    Conclusions:

    • Sepsis pathophysiology is complex and heterogeneous, not driven by a single factor.
    • Diverse alterations in immune, cellular, and metabolic systems contribute to sepsis.
    • A comprehensive understanding of these alterations is crucial for effective sepsis management.