• Mark R Taylor and Damjan Gaco.
• Department of Emergency Medicine, University of Saskatchewan, Saskatoon, Saskatchewan, Canada.
• J Emerg Med. 2013 Sep 1;45(3):e55-8.

BackgroundHigh-dose corticosteroid therapy is used to treat several severe autoimmune diseases. Despite a common knowledge in the medical community of the adverse effects of chronic corticosteroid use, there is much less awareness of the affects that can occur after very high doses are administered in a relatively short period of time.ObjectiveOur objective was to report on the outpatient-based practice of administering high-dose corticosteroids for autoimmune disease and the possible bradycardic response that can occur as a result.Case ReportWe present a case of a 45-year-old female with multiple sclerosis who presented to the emergency department with symptomatic sinus bradycardia secondary to a regimen of high-dose corticosteroid therapy.ConclusionsMore patients with autoimmune diseases may be placed on outpatient-based treatment regimens of high-dose corticosteroids in the future. It is important for emergency physicians to be aware of bradycardia as a possible adverse effect, as many of these patients may present to the emergency department for evaluation.Copyright © 2013 Elsevier Inc. All rights reserved.

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