Thromb Haemost 1996; 76(03): 312-321
DOI: 10.1055/s-0038-1650576
Original Article
Schattauer GmbH Stuttgart

Hemostatic Disorder of Uremia: The Platelet Defect, Main Determinant of the Prolonged Bleeding Time, Is Correlated with Indices of Activation of Coagulation and Fibrinolysis

Diego Mezzano
1   The Departments of Hematology-Oncology and Nephrology, School of Medicine, Catholic University, Valdivia, Chile
,
Rodrigo Tagle
1   The Departments of Hematology-Oncology and Nephrology, School of Medicine, Catholic University, Valdivia, Chile
,
Olga Panes
1   The Departments of Hematology-Oncology and Nephrology, School of Medicine, Catholic University, Valdivia, Chile
,
Marcos Pérez
1   The Departments of Hematology-Oncology and Nephrology, School of Medicine, Catholic University, Valdivia, Chile
,
Patricio Downey
1   The Departments of Hematology-Oncology and Nephrology, School of Medicine, Catholic University, Valdivia, Chile
,
Blanca Muñoz
1   The Departments of Hematology-Oncology and Nephrology, School of Medicine, Catholic University, Valdivia, Chile
,
Eduardo Aranda
1   The Departments of Hematology-Oncology and Nephrology, School of Medicine, Catholic University, Valdivia, Chile
,
Pliar Bajra
2   The Department of Exper. Medicine, Valdivia, Chile
,
Sergio Thambo
3   The Department of Nephrology, School of Medicine, University of Chile, Chile
,
Fernando González
1   The Departments of Hematology-Oncology and Nephrology, School of Medicine, Catholic University, Valdivia, Chile
,
Sergio Mezzano
4   Santiago and Division of Nephrology, School of Medicine, Austral University, Valdivia, Chile
,
Jaime Pereira
1   The Departments of Hematology-Oncology and Nephrology, School of Medicine, Catholic University, Valdivia, Chile
› Author Affiliations
Further Information

Publication History

Received: 21 November 1995

Accepted after resubmission06 May 1996

Publication Date:
26 July 2018 (online)

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Summary

Several parameters of primary hemostasis and markers of activation of coagulation and fibrinolysis were measured in 48 patients with severe (creatinine clearance <20 ml/min) chronic renal failure (CRF) without dialysis and diseases or drugs affecting hemostasis. Bleeding time (BT) was prolonged in 25/48 patients, and was correlated with age of patients, severity of renal failure, hematocrit, impairment in platelet aggregation-secretion and decrease in platelet ATP content. Defects in von Willebrand factor played no role in the prolongation of the BT. Multivariate analysis showed that only platelet dysfunction and severity of renal disease were independent predictors of the BT in uremia. The platelet functional disorder was significantly correlated with a reduction in platelet ATP and ADP.

High levels of plasma thrombin-antithrombin complexes (TAT), prothrombin fragment F1+2, fibrinogen and factor VIIc were observed in patients with CRF, as described in prethrombotic states. Plasmin-antiplasmin complexes (PAP), fibrinogen and fibrin degradation products (FgDP, FnDP) were significantly increased, and the activity of plasminogen activator inhibitor (PAI-1) was slightly reduced, denoting an activation of fibrinolysis.

A negative correlation was found between platelet levels of ATP and ADP with plasma TAT, F1+2 and PAP. Furthermore, plasma PAI-1 activity was negatively correlated with the BT and was lower in patients with prolonged BT as compared with controls and patients with normal BT. These links between primary hemostasis and activation of coagulation and fibrinolysis suggest that increased intravascular generation of thrombin and/or plasmin is an important mediator of the defects in primary hemostasis, prolongation of the BT and, probably, bleeding in CRF.