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Clinical indications for intravenous immunoglobulin utilization in a tertiary medical center: a 9-year retrospective study.
Transfusion 2018 Februrary
BACKGROUND: Intravenous immunoglobulins (IVIG) are a biologic product originally developed to treat immunocompromised patients. In the past decades, there has been increased utilization of IVIG in autoimmune conditions. The objectives were to evaluate the clinical use of IVIG in the largest tertiary medical center in Israel and to determine top uses, estimate off-label usage, and assess consumption of this blood product.
STUDY DESIGN AND METHODS: We conducted an observational, retrospective study involving all patients who received IVIG from 2007 through 2015. Subjects were classified into five groups according to the indication for treatment.
RESULTS: A total of 1117 patients were identified. The mean (±SD) ages of adults and children were 55 ± 17 and 8 ± 7 years, respectively. Most common indication for treatment were immune-mediated conditions (54%), followed by secondary immunodeficiency (28%), primary immunodeficiency (10%), infections (4%), and miscellaneous (4%). The main immune-mediated conditions treated were hematologic disorders (305 patients, 27%), neurologic disorders (219 patients, 20%), and rheumatologic conditions (79 patients, 7%). Overall, a significant change in study period was observed in the number of patients (p < 0.001), consumption of IVIG (p < 0.01), and amount of IVIG administered per patient (p < 0.01). Fifty-six percent of the IVIG infusions were given for off-label Food and Drug Administration (FDA) indications.
CONCLUSION: In this study, we demonstrated that immune-mediated conditions represent the majority of indications for treatment with IVIG. We observed a 417% increase in IVIG administration (g) over time, attributed mainly to autoimmune diseases. Many indications are still off-label according to FDA recommendations.
STUDY DESIGN AND METHODS: We conducted an observational, retrospective study involving all patients who received IVIG from 2007 through 2015. Subjects were classified into five groups according to the indication for treatment.
RESULTS: A total of 1117 patients were identified. The mean (±SD) ages of adults and children were 55 ± 17 and 8 ± 7 years, respectively. Most common indication for treatment were immune-mediated conditions (54%), followed by secondary immunodeficiency (28%), primary immunodeficiency (10%), infections (4%), and miscellaneous (4%). The main immune-mediated conditions treated were hematologic disorders (305 patients, 27%), neurologic disorders (219 patients, 20%), and rheumatologic conditions (79 patients, 7%). Overall, a significant change in study period was observed in the number of patients (p < 0.001), consumption of IVIG (p < 0.01), and amount of IVIG administered per patient (p < 0.01). Fifty-six percent of the IVIG infusions were given for off-label Food and Drug Administration (FDA) indications.
CONCLUSION: In this study, we demonstrated that immune-mediated conditions represent the majority of indications for treatment with IVIG. We observed a 417% increase in IVIG administration (g) over time, attributed mainly to autoimmune diseases. Many indications are still off-label according to FDA recommendations.
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