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A prospective, randomized, double-blinded, placebo-controlled study of human intravenous immunoglobulin for the acute management of presumptive primary immune-mediated thrombocytopenia in dogs.

Author(s): Bianco D, Armstrong PJ, Washabau RJ

Affiliation(s): Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, 1352 Boyd Avenue, St Paul, MN 55108, USA. bianc037@umn.edu

Publication date & source: 2009-09, J Vet Intern Med., 23(5):1071-8. Epub 2009 Aug 5.

Publication type: Comparative Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't

BACKGROUND: Immune-mediated thrombocytopenia (IMT) is a common hematologic disorder in dogs. Human intravenous immunoglobulin (hIVIG) may have a beneficial effect in canine IMT. HYPOTHESIS: A single hIVIG infusion (0.5 g/kg) in dogs with presumed primary IMT (pIMT) is a safe adjunctive emergency treatment to accelerate platelet count recovery and shorten hospitalization time without increasing the cost of patient care. ANIMALS: Eighteen client-owned dogs with a presumptive diagnosis of pIMT. METHODS: Prospective, randomized, double-blinded, placebo-controlled clinical trial. RESULTS: There were no identifiable immediate or delayed adverse reactions associated with hIVIG administration over a 6-month period. The median platelet count recovery time for the hIVIG group was 3.5 days (mean + or - SD: 3.7 + or - 1.3 days; range, 2-7 days) and 7.5 days (mean + or - SD: 7.8 + or - 3.9 days; range, 3-12 days) for the placebo group. The median duration of hospitalization for hIVIG group was 4 days (mean + or - SD: 4.2 + or - 0.4 days; range, 2-8 days) and 8 days (mean + or - SD: 8.3 + or - 0.6 days; range, 4-12 days) for the placebo group. There was no significant difference between groups with respect to expense of initial patient care, whereas significant reduction in platelet count recovery time (P= .018) and duration of hospitalization (P= .027) were detected in the hIVIG group. CONCLUSIONS AND CLINICAL IMPORTANCE: Compared with corticosteroids alone, adjunctive emergency therapy of a single hIVIG infusion was safe and associated with a significant reduction in platelet count recovery time and duration of hospitalization without increasing the expense of medical care in a small group of dogs with presumed pIMT.

Page last updated: 2009-10-20

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