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[Monoclonal gammopathy and platelet function (author's transl)]
Abstract:
This study of 20 patients with monoclonal gammopathy (17 patients with multiple myeloma and 3 patients with Waldenström's syndrome) showed a decreased platlet aggregation induced by ADP and collagen, a reduced platlet retention and a prolonged bleeding time in 25% of the cases in comparison with 30 age- and sex-matched healthy controls. Using Wu and Hoak's technique as increased number of reversible platelet aggregates was observed. There was no relationship between the parameters of primary haemostasis and protein analysis. A disturbed mechanism of primary haemostasis is the main factor responsible for the bleeding diathesis in patients with monoclonal gammopathy.
Insights
Patients with monoclonal gammopathy, including multiple myeloma, exhibit impaired platelet function. This primary hemostasis disorder contributes to bleeding risks in these individuals.
Area of Science:
- Hematology
- Oncology
- Internal Medicine
Context:
- Monoclonal gammopathies, such as multiple myeloma and Waldenström's syndrome, are plasma cell disorders.
- Bleeding diathesis is a recognized complication in patients with these conditions.
- Primary hemostasis involves platelet aggregation and retention, crucial for blood clotting.
Purpose:
- To investigate primary hemostasis parameters in patients with monoclonal gammopathy.
- To determine the relationship between hemostatic defects and protein abnormalities.
- To identify the primary cause of bleeding tendencies in monoclonal gammopathy.
Summary:
- A study of 20 patients with monoclonal gammopathy (17 multiple myeloma, 3 Waldenström's syndrome) revealed decreased platelet aggregation and retention, and prolonged bleeding time in 25% of cases.
- Platelet function tests showed impaired responses to ADP and collagen, with increased reversible platelet aggregates observed.
- No correlation was found between primary hemostasis parameters and protein analysis, suggesting a distinct mechanism.
Impact:
- Identifies a disturbed primary hemostasis mechanism as the main factor responsible for bleeding diathesis in monoclonal gammopathy.
- Highlights the importance of assessing platelet function in managing bleeding risks for these patients.
- Provides insights into the pathophysiology of bleeding complications in plasma cell disorders.