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  • Title: Activation and inhibition of fibrinolysis in septic patients in an internal intensive care unit.
    Author: Voss R, Matthias FR, Borkowski G, Reitz D.
    Journal: Br J Haematol; 1990 May; 75(1):99-105. PubMed ID: 1695855.
    Abstract:
    Disseminated thrombotic processes in the microcirculation are considered to be an important cause of multiple organ failure in septic patients. Fibrinolysis is one endogenous mechanism protecting the circulation from overwhelming thrombosis. Therefore, we looked for alterations of fibrinolytic parameters (tissue plasminogen activator (t-PA), tissue plasminogen activator inhibitor (PAI), D-dimer, euglobulin-clot-lysis-time (ECLT), plasminogen, alpha 2-antiplasmin) and of some coagulation parameters (prothrombin time, fibrinogen, platelets, antithrombin III, protein C, factor XII) in clearly defined septic patients and for the relations of these values to the severity of the disease (APACHE II-score). An increase in D-dimer and t-PA-antigen was registered in all patients, while factor XII and plasminogen were decreased, indicating an activated fibrinolysis. In contrast the systemic fibrinolytic capacity of the blood was strongly inhibited: t-PA-activity was not detectable, PAI-function was elevated, the ECLT was prolonged and alpha 2-antiplasmin was normal. Coagulation was moderately activated: the platelets, antithrombin III and protein C were decreased, the prothrombin time was prolonged and fibrinogen was normal. The changes in t-PA-antigen, PAI-function, factor XII, prothrombin time and antithrombin III were significantly related to the APACHE II-score of the patients. We conclude that the activation of coagulation is accompanied by an activation of fibrinolysis in the microcirculation, but that systemically the increased inhibitors of fibrinolysis (PAI, alpha 2-antiplasmin) induce a decrease of the fibrinolytic capacity of the blood. The severity of the disease determines the extent of the alterations.
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