Implementation of an extended-infusion piperacillin-tazobactam program at an urban teaching hospital

Purpose. The development and implementation of an extended-infusion piperacillin-tazobactam program at an urban teaching hospital are described. Summary. A multidisciplinary team was formed to address the feasibility of converting from the standard 30-minute infusion to an extended infusion of piperacillin-tazobactam. Before hospitalwide implementation, feasibility studies were performed in a subset of patients to identify potential barriers to program implementation. On the day of hospitalwide conversion, the orderables for piperacillin-tazobactam were reprogrammed in the computerized prescriber-order-entry system to allow separate options for the 30-minute infusion (for pediatric patients) and the extended-infusion regimen. After selecting the orderable for the extended-infusion regimen, an electronic message appeared to remind prescribers of the rationale for this change and recommended indications for piperacillin-tazobactam. Program success was prospectively evaluated on 11 weekdays after hospitalwide conversion for all 96 adult inpatients receiving piperacillin-tazobactam. Of the 194 piperacillin-tazobactam doses observed, 90% were appropriate, with compliance increasing to 100% by the end of the observation period. There was near-complete cessation of the every-6-hour dosage interval and a marked increase in the every-8-hour and every-12-hour dosage intervals. The number of piperacillin-tazobactam doses per 1000 patient-days significantly decreased during the postimplementation period. During the postimplementation period, pharmacy expenditures related to piperacillin-tazobactam decreased by 18% and the total number of grams of piperacillin-tazobactam purchased decreased by 24%. Conclusion. A hospitalwide program for the administration of extended-infusion piperacillin-tazobactam was safely and successfully implemented using a multidisciplinary approach in an urban teaching hospital.