A common finding in acute renal failure, particularly if it is caused by septic shock, consists of fibrin deposits in the intrarenal blood vessels. In a study of fibrinolytic parameters in 82 patients with severe bacterial infections, a significant negative correlation between plasminogen plasma concentration and serum creatinine was found. On admission the plasminogen levels were lower than the alpha 2-antiplasmin concentrations, which means a reduction of the fibrinolytic capacity due to a preponderance of the inhibitor. Preliminary experience with a replacement therapy is here reported. In 9 patients with an acute renal failure due to septicaemia or other serious diseases with shock, a substitution with fresh frozen plasma and antithrombin III concentrate was carried out in order to stop disseminated coagulation. A considerable increase of urine excretion was observed in 5 of these patients in close connection with the additional administration of a plasminogen concentrate.
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