title: Emerging Role of Direct Oral Anticoagulants in the Management of Heparin-Induced Thrombocytopenia.
abstract: Heparin-induced thrombocytopenia (HIT) and heparin-induced thrombocytopenia with thrombosis (HITT) are rare but potentially limb- and life-threatening complications of heparin therapy. Continuation of heparin or low-molecular-weight heparin is contraindicated due to platelet activation in the presence of (heparin-dependent) HIT antibodies. Primary treatment options currently include argatroban, fondaparinux, or bivalirudin. However, the parenteral administration routes and interference of argatroban with traditional coagulation markers complicate management. The goal of this review is to assess the viability of direct oral anticoagulants as an alternative treatment option in patients with HIT/HITT. Their use in HIT/HITT is reasonable, given absent cross-reactivity preformed with HIT antibodies. Furthermore, their rapid onset of action and induction of effective anticoagulation provide a favorable basis for their use in this condition. Herein, we summarize 3 studies and 8 case reports comprising 56 patients in whom direct oral anticoagulants were used in the treatment of HIT/HITT.
authors.affiliation: 1 Division of Hematology-Oncology, Department of Medicine, Chao Family Comprehensive Cancer Center, University of California Irvine School of Medicine, Orange, CA, USA.
authors.forename: Phu Ngoc
authors.initials: PN
authors.lastname: Tran
authors.affiliation: 2 Department of Pathology and Laboratory Medicine, University of California Irvine School of Medicine, Irvine, CA, USA.|3 Department of Internal Medicine, University of California Irvine School of Medicine, Irvine, CA, USA.
authors.forename: Minh-Ha
authors.initials: MH
authors.lastname: Tran
mesh_terms: D000284:Administration, Oral; D000925:Anticoagulants / Q000008:administration & dosage* / Q000627:therapeutic use; D019468:Disease Management; D006493:Heparin / Q000009:adverse effects*; D006801:Humans; D013921:Thrombocytopenia / Q000139:chemically induced* / Q000188:drug therapy; D013927:Thrombosis / Q000139:chemically induced / Q000188:drug therapy
chemical_list: D000925:Anticoagulants; D006493:Heparin
keywords: anticoagulation; apixaban; dabigatran; direct oral anticoagulant; heparin-induced thrombocytopenia; rivaroxaban; thrombosis