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Platelet function and the bleeding time in progressive renal failure
M P Gordge1, R W Faint, P B Rylance
1Dept. of Renal Medicine, St. Philips Hospital, London, UK.
Thrombosis and Haemostasis
|August 30, 1988
Summary
In progressive chronic renal failure (CRF), bleeding time is prolonged only in severe cases. Platelet function remains largely normal, suggesting other factors contribute to bleeding risk in CRF patients.
Area of Science:
- Nephrology
- Hematology
- Clinical Pathology
Background:
- Chronic renal failure (CRF) can affect hemostasis.
- Understanding bleeding risk in CRF is crucial for patient management.
Purpose of the Study:
- To investigate bleeding time and platelet function in patients with progressive chronic renal failure (CRF) of non-immunological origin.
- To identify factors contributing to prolonged bleeding in CRF.
Main Methods:
- Bleeding time and platelet function tests were conducted on 31 CRF patients and 22 healthy controls.
- Patients were stratified into mild, moderate, and severe CRF based on plasma creatinine levels.
- Assessed platelet aggregation, thromboxane generation, fibrinogen, C-reactive protein, and von Willebrand factor (vWF).
Main Results:
- Bleeding time was significantly elevated only in severe CRF.
- Haematocrit negatively correlated with bleeding time.
- Platelet counts and aggregation responses were generally normal or increased.
- Thromboxane production in clotting blood was reduced.
- Plasma fibrinogen, C-reactive protein, and vWF levels increased with CRF severity.
Conclusions:
- Prolonged bleeding time in progressive CRF is primarily associated with severe renal impairment.
- Platelet aggregation and interaction with vWF do not appear to be the primary cause of prolonged bleeding time in CRF.
- Reduced thromboxane production in clotting blood and elevated inflammatory markers may play a role in hemostatic alterations in CRF.