Management of heparin-induced thrombocytopenia: a critical comparison of lepirudin and argatroban

Heparin-induced thrombocytopenia (HIT) is a transient hypercoagulability state initiated, paradoxically, by the anticoagulant, heparin. It is characterized by antibody-induced activation of platelets, leading to thrombin generation. Many patients with HIT develop thrombosis; even when heparin is stopped because of "isolated HIT" detected during routine platelet count monitoring, 25-50% of patients subsequently develop symptomatic thrombosis. Thus, an alternative anticoagulant should be substituted for heparin when HIT is strongly suspected. Two direct thrombin inhibitors (DTIs), lepirudin and argatroban, have been studied for prevention and treatment of thrombosis in HIT patients. Lepirudin is a polypeptide that binds irreversibly to the fibrin-binding and catalytic sites on thrombin (bivalent inhibitor). In contrast, argatroban is a synthetic, small-molecule DTI that binds reversibly to the catalytic site alone (univalent inhibitor). Results of historically controlled clinical trials suggest both agents are effective for preventing and treating thrombosis in HIT. However, these agents have not been compared directly, and important differences in study design limit conclusions from indirect comparison. For example, lepirudin was given for 12-14 days (mean) in treatment studies of thrombosis complicating HIT, whereas argatroban was given only for 6-7 days, a difference that could explain apparent lower thrombosis rates (and greater bleeding) with lepirudin. Recently, the transition from DTI therapy to oral anticoagulation in patients with deep venous thrombosis (DVT) complicating HIT has been identified as a risk period for coumarin-induced venous limb gangrene. Thus, the DTI should be given alone during acute HIT, with oral anticoagulants deferred until substantial resolution of the thrombocytopenia has occurred.

Resumen tomado de PubMed (NCBI) para el registro citado, en el idioma original. La versión de referencia es la de la publicación original.

El resumen se deja sin traducir para conservar la redacción original de los autores.

This review contrasts lepirudin, a bivalent irreversible thrombin inhibitor, with argatroban, a small-molecule univalent inhibitor, for HIT. Without head-to-head trials, design differences such as treatment duration complicate comparison, and oral anticoagulants should be deferred until thrombocytopenia substantially resolves.

Explore cómo esta investigación se conecta con la práctica clínica

Más estudios revisados por pares en la categoría «Literatura clínica».

• Leech Therapy for Knee Osteoarthritis — The Landmark RCT — Michalsen et al. (2003)
• Leech-Assisted Flap Salvage — Systematic Review of 277 Cases — Whitaker et al. (2012)
• Efectos de la hirudoterapia sobre las funciones hepáticas, el perfil lipídico y la sensibilidad a la insulina en ratas con síndrome metabólico — Bilden A et al. (2026)
• Eficacia y seguridad de la hirudoterapia para mejorar los parámetros de calidad espermática en la infertilidad masculina: un ensayo controlado aleatorizado — Abtahi-Forooshani M et al. (2026)
• Congestión venosa de un colgajo sural reverso manejada con éxito con enoxaparina en un paciente varón con lesión traumática por aplastamiento del pie: un caso clínico — Velasco-Bustamante J et al. (2026)
• Investigación de los efectos terapéuticos del tratamiento con sanguijuelas medicinales sobre la lesión por isquemia-reperfusión de la extremidad inferior — Ünal K et al. (2026)
• Eficacia de la terapia con sanguijuelas medicinales en diversas aplicaciones clínicas: un estudio exhaustivo de Azerbaiyán — Farzali S et al. (2025)
• Hirudoterapia en cirugía reconstructiva: casos clínicos y revisión — Heinz P et al. (2020)
• Hirudoterapia en la cicatrización de heridas — Nair H et al. (2022)
• Hirudoterapia para la isquemia de las extremidades en la unidad de cuidados intensivos pediátricos: una cohorte observacional retrospectiva — Resch J et al. (2022)

Ver toda la investigación analizada por la ASH →