Oct

26

2021

In the 4T test for heparin-induced thrombocytopenia (HIT), what are probable alternative causes of thrombocytopenia?

By William Aird

A

In the 4T test for heparin-induced thrombocytopenia (HIT), what are probable alternative causes of thrombocytopenia?

  • < 72 hours post-surgery
  • Infection (confirmed bacteremia/fungemia)
  • Chemotherapy or radiation < 20 days
  • Disseminated intravascular coagulation (DIC)
  • Posttransfusion purpura
  • Other drugs implicated in drug-induced thrombocytopenia

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