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Disseminated intravascular coagulation: testing and diagnosis.
Hideo Wada1, Takeshi Matsumoto2, Yoshiki Yamashita3
1Department of Molecular and Laboratory Medicine, Mie University Graduate School of Medicine, Tsu, Japan.
Summary
Disseminated intravascular coagulation (DIC) involves complex hemostatic imbalances. New diagnostic criteria are needed to guide timely anticoagulant therapy for better patient outcomes in sepsis.
Area of Science:
- Hematology
- Critical Care Medicine
- Pathophysiology
Background:
- Disseminated intravascular coagulation (DIC) presents with conflicting hemostatic forces: hypercoagulation and hyperfibrinolysis.
- Septic DIC is characterized by significantly reduced antithrombin (AT) and protein C (PC) levels, impairing natural anticoagulant pathways.
- This reduction leads to persistent thrombin generation, exacerbating the coagulation cascade.
Purpose of the Study:
- To analyze the balance of hypercoagulation and hyperfibrinolysis in DIC.
- To evaluate existing diagnostic criteria for DIC and their effectiveness in predicting outcomes.
- To highlight the need for improved diagnostic tools for initiating anticoagulant therapy.
Main Methods:
- Review of existing literature on DIC pathophysiology and diagnostic criteria.
- Analysis of the roles of antithrombin (AT) and protein C (PC) in septic DIC.
- Comparison of sensitivity and specificity of three established DIC diagnostic criteria.
Main Results:
- DIC classification depends on the interplay between hypercoagulation and hyperfibrinolysis.
- Low AT and PC levels in septic DIC contribute to uncontrolled thrombin generation.
- Current diagnostic criteria show varying efficacy in predicting mortality.
Conclusions:
- Existing diagnostic criteria for DIC have limitations in guiding treatment timing.
- Antithrombin (AT) or activated protein C (aPC) may not benefit early sepsis but could help established DIC.
- Development of new diagnostic criteria is crucial for optimizing anticoagulant therapy initiation in DIC.
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