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  • Title: Platelet aggregation in portal cirrhosis.
    Author: Ballard HS, Marcus AJ.
    Journal: Arch Intern Med; 1976 Mar; 136(3):316-9. PubMed ID: 4041.
    Abstract:
    Primary and secondary platelet aggregation in response to adenosine diphosphate was studied in 24 patients with portal (Laënnec) cirrhosis and compared with platelet aggregation in 14 normal subjects. In 12 patients with cirrhosis, platelet aggregation was diminished when compared to controls. Of the 12 patients with impaired aggregation, 6 had elevated levels of fibrinogen-fibrin degradation products (FDPs), 11 had thrombocytopenia, 10 had shortened euglobulin lysis times, 11 had prolonged bleeding times, 4 had hypofibrinogenemia, and all had prolonged thrombin clotting times. The data suggest that elevated levels of serum FDPs do not explain fully the impairment of platelet aggregation or the prolongation of the thrombin clotting time that was noted in patients with advanced liver disease. A possible explanation for the prolongation of the thrombin clotting time is the presence of "altered" plasma fibrinogen.
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