Standardizing the management of heparin-induced thrombocytopenia

PURPOSE: An evidence-based heparin- induced thrombocytopenia (HIT) treatment protocol to standardize the management of confirmed or suspected HIT was developed. SUMMARY: In a retrospective review of 10 patients with known or suspected HIT over a two-year period, medical records were evaluated for baseline laboratory results, treatment selection, initial dosing and monitoring, discontinuation of heparin, and alternative therapies chosen. Six of 10 patients had antibody-confirmed HIT at admission. Nine patients received alternative anticoagulation therapy with one of two formulary direct thrombin inhibitor (DTI) agents, lepirudin and argatroban; 1 patient was given fondaparinux. Medical record analyses revealed deficiencies in both initial and transitional dose administration and renal function monitoring, order omissions, infusion-related medication errors, and treatments that were unsubstantiated, inappropriate, or lacking in regulatory approval. The new treatment protocol developed to assist physicians, pharmacists, and nurses with HIT management focused primarily on the two agents labeled for HIT, lepirudin and argatroban. The protocol established baseline levels for the selection of anticoagulation therapy as well as guidance in DTI selection, use, and monitoring. Guidelines for initial dosing and continuous infusion rates based on weight and detailed instructions in all aspects of therapy discontinuation (transition) were included. HIT treatments unsupported by data ensuring the efficacy and safety of therapies were excluded. Careful review of the relevant literature led to the inclusion of alternative anticoagulant treatments based on issues of safety, efficacy, cost, and convenience of dose forms. CONCLUSION: A treatment protocol for HIT was developed and implemented in a tertiary care hospital in an effort to improve the management of patients suffering from this complication.

Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.

Evidence-based HIT treatment protocol developed at tertiary care hospital after retrospective review of 10 patients; protocol focused on lepirudin and argatroban as primary FDA-labeled DTIs.

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