heparin induced thrombocytopenia and thrombosis


type 1 HITT

type 2 HITT

Delayed onset HIT

Delayed-onset HIT - immune mediated due to high-titer antibodies against heparin-PF4 complexes in the absence of circulating heparin.  Cases typically arise 5-19 days after heparin cessation; therefore, most patients present in the outpatient settingThrombocytopenia with or without life-threatening arterial or venous thrombosis are the norm.

[!NOTE] extensive DVT with thrombocytopenia after major surgery in clinic

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