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Related Experiment Videos

Platelet aggregation in portal cirrhosis.

H S Ballard, A J Marcus

    Archives of Internal Medicine
    |March 1, 1976
    PubMed
    Summary

    Platelet aggregation is often impaired in patients with portal cirrhosis, despite normal fibrinogen-fibrin degradation products (FDPs). This suggests altered plasma fibrinogen may contribute to clotting abnormalities in advanced liver disease.

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    Area of Science:

    • Hematology
    • Hepatology
    • Clinical Biochemistry

    Background:

    • Portal (Laënnec) cirrhosis is a severe liver condition associated with various hemostatic abnormalities.
    • Platelet dysfunction can contribute to bleeding risks in patients with liver disease.

    Purpose of the Study:

    • To investigate primary and secondary platelet aggregation in response to adenosine diphosphate in patients with portal cirrhosis.
    • To compare platelet aggregation in cirrhotic patients with healthy controls.

    Main Methods:

    • Studied platelet aggregation in 24 patients with portal cirrhosis and 14 normal subjects using adenosine diphosphate as a stimulant.
    • Assessed levels of fibrinogen-fibrin degradation products (FDPs), platelet counts, euglobulin lysis times, bleeding times, fibrinogen levels, and thrombin clotting times.

    Main Results:

    • Diminished platelet aggregation was observed in 12 out of 24 cirrhotic patients compared to controls.
    • Patients with impaired aggregation frequently exhibited thrombocytopenia, prolonged bleeding times, and prolonged thrombin clotting times.
    • Elevated FDPs did not fully account for impaired platelet aggregation or prolonged thrombin clotting times.

    Conclusions:

    • Impaired platelet aggregation is a significant finding in portal cirrhosis.
    • Altered plasma fibrinogen may be a contributing factor to the prolonged thrombin clotting time observed in advanced liver disease.
    • Further research is needed to elucidate the exact mechanisms of hemostatic derangements in cirrhosis.

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