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Modified in vivo platelet retention test for evaluating primary haemostasis
J L de la Cuadra1, C Jeanneret, M Furlan
1Central Haematology Laboratory, University Hospital, Berne, Switzerland.
Acta Haematologica
|January 1, 1988
Summary
This study introduces a modified platelet retention test to assess platelet plug formation. The new method reveals distinct phases of platelet consumption, aiding in the diagnosis of bleeding disorders and drug efficacy.
Area of Science:
- Hematology
- Hemostasis and Thrombosis
- Pharmacology
Background:
- Platelet plug formation is crucial for primary hemostasis.
- Existing methods for assessing platelet function in vivo have limitations.
- Understanding dynamic platelet behavior at wound sites is essential.
Purpose of the Study:
- To present a modified in vivo platelet retention test.
- To evaluate platelet plug formation using a standardized skin incision (template bleeding time).
- To characterize the biphasic pattern of platelet consumption and its correlation with aggregation.
Main Methods:
- A modified in vivo platelet retention test was developed.
- Platelet retention was measured at defined time intervals after a standardized skin incision.
- The method was applied to 20 healthy subjects, 10 patients with congenital platelet dysfunction, and 2 with von Willebrand's disease.
Main Results:
- A characteristic biphasic pattern of platelet consumption was observed in healthy subjects.
- This biphasic pattern correlated with primary and secondary platelet aggregation.
- Patients with platelet dysfunction or von Willebrand's disease showed altered early-phase retention.
- Aspirin predominantly inhibited late-phase platelet retention.
Conclusions:
- The modified platelet retention test provides dynamic insights into platelet plug formation.
- It can differentiate between normal and disordered primary hemostasis.
- The test is potentially useful for evaluating the in vivo effects of antithrombotic drugs.