Abstract
Background Rituximab, a chimeric monoclonal antibody targeting the CD20 protein on the surface of B cells, is used to treat several rheumatologic and oncologic diseases. The standard infusion duration of rituximab is four hours. Objective Evaluating the safety of administering the accelerated 90-minute protocol at our Veterans Affairs center to patients with rheumatologic diseases and monitoring for any infusion-related reactions. This study is unique as it examines infusion rates faster than those most described (120 minutes). Methods Patients treated with rituximab for autoimmune diseases between June 2020 and June 2022 at our center were included in the study. Our patients were over 18 years of age,met the inclusion criteria, and had received previous rituximab infusions without prior infusion-related reactions. They received the accelerated protocol of 90 minutes over their next cycles and were monitored for any reactions during their infusions. Results A total of 34 patients receiving 76 infusions were included in the analysis. Most of the patients were males (n = 27). The most prevalent indication for rituximab infusion was rheumatoid arthritis (n = 20).Out of 76 infusions, only two infusion-related reactions were recorded (2.6% incidence). The first patient had itching and a sore throat, indicating a grade 1A reaction. The second patient developed chest pain and dyspnea, which resolved with diphenhydramine and albuterol. For both, the infusion was completed after appropriate management. Conclusion The incidence of infusion-related reactions during the accelerated 90-minute rituximab infusion was remarkably low and well-tolerated by our rituximab-experienced patients. Only two infusions were complicated by a reaction, an incidence comparable to or even lower than other reported 120-minute infusion protocols.This protocol is time- and cost-efficient, allowing for more infusions per chair per day at our center.
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