Abstract
Cryopreserved peripheral blood stem cell (PBSC) products can induce a number of infusion-related adverse reactions, including life-threatening cardiac, neurologic, and other end-organ complications. Preliminary analyses suggested limiting the daily total nucleated cell dose infused might decrease the incidence of these adverse effects. A policy change implemented in December 2007, limiting the total nucleated cell (TNC) dose to <1.63 × 10(9) TNC/kg/day, allowed us to assess the impact of this intervention on infusion-related safety, infusion schedules, engraftment, and costs in cohorts of patients undergoing autologous stem cell transplants (ASCTs) 2 years before (325 ASCTs in 288 patients) and 2 years after the policy change (519ASCTs in 479 patients). The percentage of autologous transplant patients requiring multiple day infusions increased from 6% to 24%. Concurrently, the incidence of infusion-related grade 3-5 severe infusion-related adverse events (SAEs) decreased significantly, from 4% (13 of 325) prepolicy change to 0.6% (3 of 519) postpolicy change (P < .0004). Multiday infusions were not associated with increased time to neutrophil or platelet engraftment or the costs of transplantation. We conclude that limiting the daily TNC dose improved the safety of this procedure without compromising engraftment or increasing the costs of the procedure.
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