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Evaluation Of Heparin-Induced Thrombocytopenia Antibody Laboratory Use And Anticoagulation Prescribing Patterns, Piper Swanson, Jesse Greenlee, Gregory Schaefer, Paul Huiras

Pharmacy Posters

Introduction

• Heparin-induced thrombocytopenia (HIT) is a rare adverse reaction
• Calculating a 4T score prior to ordering a heparin-PF4 immunoassay is recommended. For a score < 4, HIT probability is low and an assay is not advised
• If high suspicion of HIT (4T greater than or equal to 4), an assay should be ordered, all heparin products discontinued, and a non-heparin anticoagulant initiated.

Purpose

• Determine if heparin immunoassay ordering was indicted according to retrospective 4T score
• Assess anticoagulation prescribing depending on the result of the assay
• Serve as a pre-group for a planned perverse post-HIT order set implementation analysis