Laboratory methods for detecting disseminated intravascular coagulation (DIC): new aspects

Area of Science:

• Critical Care Medicine
• Hematology
• Clinical Pathology

Background:

• Hypercoagulable states, termed "pre-DIC," pose diagnostic challenges in intensive care units (ICUs).
• Traditional coagulation tests often fail to detect early stages of coagulopathy.
• Assessing primary illness severity (APACHE II score) and secondary complications (ventilator time) is crucial.

Purpose of the Study:

• To evaluate novel laboratory tests for diagnosing hypercoagulable states ("pre-DIC") in ICU patients.
• To correlate new coagulation markers with illness severity and complication duration.

Main Methods:

• Twenty-three ICU patients were stratified into two groups based on ventilator duration (>7 days vs. ≤7 days).
• Quantitative coagulation tests, including soluble fibrin (SF), prothrombin fragment 1+2, thrombin-antithrombin complex, D-dimer, and elastase, were performed.
• Correlation analysis was conducted between SF levels, APACHE II scores, and ventilator time.

Main Results:

• Soluble fibrin (SF) levels positively correlated with APACHE II scores and ventilator time.
• SF demonstrated high diagnostic efficacy (87%), sensitivity (91%), and specificity (83%) for "pre-DIC".
• Other novel markers were generally elevated in the more severely ill group, though not significantly.

Conclusions:

• Soluble fibrin (SF) is a valuable marker for diagnosing "pre-DIC" in ICU patients.
• SF may predict the development of organ system complications and prolonged mechanical ventilation.
• Hypercoagulability is associated with increased secondary complications and longer ICU stays.