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Updated: Apr 6, 2026

The Nijmegen Hemostasis Assay: Simultaneous Fluorogenic Measurement of Thrombin and Plasmin Generation in a Single Well
Published on: February 27, 2026
[THE TEST OF GENERATION OF THROMBIN IN DYNAMICS IN PATIENTS AFTER TRANSCUTANEOUS CORONARY INTERVENTION]
Insights
Patients with stable ischemic heart disease experience hypercoagulation within 1-3 days after transcutaneous coronary intervention, indicated by increased thrombin generation and reduced protein C activity, despite standard therapies.
Area of Science:
- Cardiovascular Medicine
- Hematology
- Biochemistry
Context:
- Ischemic heart disease (IHD) management often involves interventions like transcutaneous coronary intervention (TCI).
- Assessing hemostasis and coagulation status post-TCI is crucial for understanding thrombotic risk.
- The protein C system plays a key role in regulating anticoagulation.
Purpose:
- To investigate thrombin generation and protein C anticoagulant activity in patients with stable IHD after TCI.
- To evaluate changes in hemostasis markers in the early period following myocardial revascularization.
- To explore correlations between thrombin generation, endothelial dysfunction, and inflammatory markers.
Summary:
- No significant differences in thrombin generation were observed between IHD patients before TCI and healthy controls.
- A significant increase in thrombin generation and a decrease in protein C anticoagulant activity were noted 1-3 days post-TCI.
- Positive correlation found between endogenous thrombin potential and annexin 5 (endothelial dysfunction marker).
- Elevated levels of C-reactive protein and fibrinogen were observed in the early post-TCI period.
Impact:
- The study reveals a state of hypercoagulation in IHD patients during the early phase after TCI.
- Findings suggest that standard coagulation tests may not fully capture the prothrombotic state post-intervention.
- Highlights the need for closer monitoring of hemostatic balance and potential adjustments in therapy for IHD patients after TCI.
Abstract:
The article presents results of observation of generation of thrombin in patients with ischemic heart disease in different terms after transcutaneous coronary intervention. The sampling included 37 patients with stable ischemic heart disease. The control group included 30 healthy individuals. To study system of hemostasis of this category of patients the test of generation of thrombin and its modification with added thrombomodulin were applied for evaluating anti-coagulant activity of system of protein C. The comparison of indicators of test of generation of thrombin in patients with ischemic heart disease before operation and in individuals of control group revealed no reliable differences (p > 0.05). The observation of patients with stable ischemic heart disease in various time-frame after mechanical re-vascularization of myocardium established significant increasing of generation of thrombin and decreasing of anticoagulant activity of system of protein C at 1-3 day after operation (p < 0.05). The positive correlation was established between endogenous thrombin potential and annexin 5, an early marker of dysfunction of endothelium in mentioned time-frame after operation (p = 0.0008; r = 0.57). The significant increasing of content of anti-inflammatory markers of C-reactive protein and fibrinogen was observed at 1-3 day after transcutaneous coronary intervention (p < 0.05). In that way, the study data give evidence to hyper-coagulation in patients with stable ischemic heart disease in early time-frame after operation despite normal values of activated partial thromboplastin time, prothrombin time, D-dimer and applied standard disaggregant therapy.
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