Revisiting Heparin-Induced Thrombocytopenia among Patients Undergoing Free Tissue Transfer: A Systematic Review

Heparin is frequently used to mitigate the risk of thrombosis in microsurgical free tissue transfer. Although rare, heparin-induced thrombocytopenia (HIT) is a severe, life-threatening complication that can arise in patients exposed to heparin products. This systematic review aims to examine patterns in demographics, flap characteristics, diagnostic approaches, and treatment protocols for HIT following free flap reconstruction.A systematic search was conducted across PubMed, MEDLINE, and Web of Science, following Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines. Search terms included "heparin-induced thrombocytopenia," "HIT syndrome," "free flaps," "microsurgery," "plastic surgery," and "reconstructive surgery." Case reports or series written in English that presented patients developing HIT following free flap procedures were included. Eligibility criteria are accessible on the International Prospective Register of Systematic Reviews (PROSPERO; CRD42025650125).A total of 15 articles were included, encompassing a total of 23 free flap reconstruction cases. The median patient age was 52 years, with male predominance (69.6). Lower extremity reconstruction was most common (47.8%), primarily using anterolateral thigh flaps (39.1%). Median 4T score was 6, median time to HIT diagnosis was 6 days, and median nadir platelet count was 72 × 103/μL. Thrombotic complications were common, with venous thrombosis (34.8%) predominating. Argatroban (26.1%) was the most frequently used alternative anticoagulant, while warfarin (30.4%) was the most common discharge medication. Overall flap survival was 43.5%. Meta-analysis revealed no significant difference in flap survival between anticoagulation strategies (95% CI: 0.38-2.63, p = 1.000).HIT represents a rare but devastating complication in free flap reconstruction, with approximately half of the affected flaps failing despite intervention. Although no single anticoagulation strategy demonstrated superior outcomes, expeditious diagnosis and treatment may improve flap salvage rates. This review provides a foundation for developing standardized protocols for HIT management in microsurgical patients.

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.

A systematic review of 23 reported cases of heparin-induced thrombocytopenia after free flap reconstruction found venous thrombosis the predominant complication, overall flap survival of 43.5%, and no anticoagulation strategy clearly superior for flap outcome.

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 →