Bivalirudin Medication Use Evaluation and Cost Savings Initiative.

Bivalirudin is a parenteral anticoagulant that elicits its effect through inhibition of both free and clot bound-thrombin. Inhibition of thrombin serves as a unique mechanism for anticoagulation when compared to heparin as thrombin serves as the final common pathway for the intrinsic and extrinsic coagulation cascades. Due to unclear benefit over heparin, concerns regarding reversibility, and most importantly cost its use as a parenteral anticoagulant varies by institution. A recent drug expenditure review within our institution noted a significant increase in the contribution bivalirudin had on the overall drug budget. In an effort to establish the rationale for the cost increase, a medication use evaluation was performed. While it was discovered that 625 out of 1364 days of bivalirudin therapy were potentially avoidable, an equally important discovery was the amount of waste that was associated with bivalirudin therapy. Calculating daily requirements for bivalirudin indicated that 60% of patients required less than 100 mg per day. Within this article, we describe a cost-savings initiative to reduce bivalirudin waste and the resulting cost-avoidance following implementation.