Treatment of heparin-induced thrombocytopenia: is there a role for bivalirudin?
Review published in Pharmacotherapy (2006)
Abstract
The recognition and management of heparin-induced thrombocytopenia (HIT) and heparin-induced thrombocytopenia with thrombosis syndrome (HITTS) has been evolving over the past several years. Although HIT is a relatively uncommon adverse event in patients receiving heparin therapy, it bears a significant risk of thrombotic events. If patients are left untreated, 50% can develop thrombosis. Several direct thrombin inhibitors have been studied as alternative anticoagulants in patients with HIT. Lepirudin and argatroban are both approved by the United States Food and Drug Administration (FDA) for the management of HIT. Lepirudin requires dosage adjustments in patients with renal insufficiency and has potential for antibody formation. Argatroban requires dosage adjustments in patients with hepatic insufficiency. Argatroban increases the international normalized ratio when coadministered with warfarin, leading to dosage difficulties when transitioning to warfarin therapy. Bivalirudin is the most recent direct thrombin inhibitor to be introduced to the market, but it is not currently FDA approved for HIT. Controversy still exists over which direct thrombin inhibitor to use, especially in acutely ill patients and in those requiring invasive or surgical procedures. Bivalirudin has a relatively short half-life and a predictable response, which makes it attractive as an anticoagulant in patients requiring invasive or surgical procedures, those who are acutely ill, or patients with both renal and hepatic insufficiency. It offers promise as an additional direct thrombin inhibitor for use in patients with HIT, but additional studies need to be performed to further define its use.
Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.
Zusammenfassung
The recognition and management of heparin-induced thrombocytopenia (HIT) and heparin-induced thrombocytopenia with thrombosis syndrome (HITTS) has been evolving over the past several years. Although HIT is a relatively uncommon adverse event in patients receiving heparin therapy, it bears a...
Warum dies für die Hirudotherapie relevant ist
Dieser Review untersucht direkte Thrombininhibitoren bei Heparin-induzierter Thrombozytopenie und erörtert Lepirudin, Argatroban und Bivalirudin – Letzteres wird als vielversprechender neuerer Wirkstoff mit kurzer Halbwertszeit und vorhersehbarer Wirkung beschrieben, wenngleich noch nicht für HIT FDA-zugelassen. Sowohl Lepirudin (rekombinantes Hirudin) als auch Bivalirudin (ein Hirudin-basiertes synthetisches Peptid, obwohl dessen Hirudin-Abstammung im Abstract nicht explizit angegeben wird) sind über ihre molekulare Herkunft vom Hirudin mit dem Sekretom des Blutegels verbunden. Die Relevanz für das ASH-Gebiet liegt darin, dass der Artikel klinische Erfahrungen mit Wirkstoffen bewertet, die aus dem Blutegel-Antikoagulans stammen oder diesem nachempfunden sind. Die Einschränkung besteht darin, dass es sich um einen narrativen Review ohne neue Primärdaten handelt, die Hirudin-Verbindung von Bivalirudin im Abstract nicht dargelegt wird und der Fokus auf pharmazeutischem Management statt auf Hirudotherapie selbst liegt.
Zitation
Treatment of heparin-induced thrombocytopenia: is there a role for bivalirudin?
Seybert et al. · Pharmacotherapy, 2006
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