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[Increased thrombin time in a patient with multiple myeloma]
Therapeutische Umschau. Revue Therapeutique
|October 12, 1999
Summary
This study details a multiple myeloma patient with impaired fibrin polymerization due to high paraprotein levels, causing prolonged coagulation tests without bleeding. This highlights paraproteinemia as a cause of coagulation abnormalities in multiple myeloma.
Area of Science:
- Hematology
- Clinical Pathology
Background:
- Multiple myeloma is a plasma cell malignancy.
- Coagulation abnormalities can occur in multiple myeloma patients.
Observation:
- A 56-year-old patient with multiple myeloma and high IgG kappa paraprotein levels presented with unclottable thrombin and reptilase times.
- The coagulation defect was attributed to impaired fibrin polymerization, likely caused by the paraproteinemia.
Findings:
- The prolonged thrombin and reptilase times in this multiple myeloma case were caused by paraprotein interference with fibrin polymerization.
- This contrasts with other causes of prolonged thrombin time, such as heparin or dysfibrinogenemia.
Implications:
- Paraproteinemia in multiple myeloma can significantly impact coagulation, leading to prolonged clotting times.
- Understanding this mechanism is crucial for accurate diagnosis and management of coagulation disorders in myeloma patients.