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Platelet function in septic multiple organ dysfunction syndrome

M Gawaz1, T Dickfeld, C Bogner

  • 1Medizinische Klinik, Technischen Universität München, Klinikum Rechts der Isar, Germany.

Intensive Care Medicine
|April 1, 1997
PubMed
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Sepsis alters platelet function, increasing adhesive properties and leading to hyperaggregation. This platelet hyperadhesiveness is linked to poor outcomes and the development of multiple organ dysfunction syndrome (MODS) in septic patients.

Area of Science:

  • Hematology
  • Critical Care Medicine
  • Pathophysiology

Background:

  • Sepsis is a life-threatening condition characterized by a dysregulated host response to infection.
  • Altered platelet function is implicated in the pathophysiology of sepsis-induced multiple organ dysfunction syndrome (MODS).

Purpose of the Study:

  • To investigate platelet adhesive function in septic patients.
  • To determine the prognostic relevance of altered platelet function in sepsis.

Main Methods:

  • Prospective clinical study involving 41 septic patients and 10 controls.
  • Assessed sepsis severity using Elebute and APACHE II scores.
  • Evaluated platelet function, including thrombospondin (TSP) expression, platelet-neutrophil adhesion, and plasma effects on normal platelet aggregation and endothelial cell adhesion.

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Main Results:

  • Septic patients with MODS showed increased platelet TSP expression.
  • Platelet-neutrophil adhesion was reduced in septic patients with MODS.
  • Platelet-neutrophil adhesion independently predicted poor clinical outcomes.
  • Septic patient plasma induced hyperaggregation and enhanced endothelial adhesion of normal platelets.

Conclusions:

  • Platelet activation and hyperadhesiveness occur in sepsis.
  • Increased platelet adhesion to neutrophils and endothelium may contribute to microcirculatory arrest and MODS development.