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[Traumatic emergencies and hemostasis]

C M Samama1

  • 1Département d'Anesthésie-Réanimation, Groupe hospitalier Pitié-Salpêtriére, Paris.

Cahiers D'Anesthesiologie
|January 1, 1995
PubMed
Summary
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Massive transfusion in trauma can cause bleeding due to dilutional thrombocytopenia and impaired coagulation. Monitoring hematocrit and temperature is crucial for managing bleeding risk.

Area of Science:

  • Trauma and Emergency Medicine
  • Hematology
  • Critical Care

Background:

  • Bleeding in trauma patients is a critical, life-threatening issue.
  • Massive transfusion protocols can lead to complications affecting hemostasis.
  • Understanding the mechanisms of bleeding is vital for effective patient management.

Purpose of the Study:

  • To elucidate the mechanisms linking massive transfusion and bleeding in trauma.
  • To highlight the role of dilutional thrombocytopenia and impaired coagulation.
  • To discuss the hemostatic function of red blood cells and the impact of hypothermia.

Main Methods:

  • Review of mechanisms contributing to bleeding after massive transfusion.
  • Analysis of the effects of fluid infusions (crystalloids, colloids, blood products) on hemostasis.

Related Experiment Videos

  • Examination of the role of hematocrit and body temperature in platelet function and adhesion.

    • Main Results:

    • Dilutional thrombocytopenia is a primary cause of bleeding post-massive transfusion.
    • Colloids like dextrans can impair hemostasis by interfering with coagulation factors.
    • Red blood cells play a role in platelet adhesion; low hematocrit (<20%) reduces adhesion.
    • Hypothermia negatively impacts platelet function and exacerbates bleeding.

    Conclusions:

    • Effective management of trauma-induced bleeding requires understanding fluid and blood product effects on hemostasis.
    • Monitoring platelet count, coagulation parameters, hematocrit, and body temperature is essential.
    • Simplified bedside monitoring tools can aid in timely hemostasis assessment and intervention.