Emergency Department Corticosteroid Use for Allergy or Anaphylaxis Is Not Associated With Decreased Relapses.

Area of Science:

• Emergency Medicine
• Allergy and Immunology
• Clinical Pharmacology

Background:

• Corticosteroids are frequently administered in emergency departments for allergic reactions and anaphylaxis.
• Evidence supporting the efficacy of corticosteroids in preventing symptom recurrence or biphasic reactions is limited.
• The study addresses a common clinical practice lacking robust scientific validation.

Purpose of the Study:

• To investigate the association between corticosteroid administration and clinical outcomes in emergency department patients with allergic reactions.
• To determine if steroid use reduces revisits, biphasic reactions, or mortality within a 7-day period.
• To provide evidence-based guidance on corticosteroid use in managing allergic emergencies.

Main Methods:

• A retrospective analysis of adult allergy-related emergency department encounters over 5 years.
• Classification of encounters into anaphylaxis or allergic reaction categories.
• Propensity score analysis to compare 7-day revisits, biphasic reactions, and deaths between steroid- and nonsteroid-treated groups.

Main Results:

• Corticosteroid use was not associated with a significant decrease in allergy-related emergency department revisits (adjusted OR 0.91; 95% CI 0.64 to 1.28).
• The number needed to treat to benefit was high, suggesting limited effectiveness for preventing revisits.
• No significant differences were observed in biphasic reactions or deaths between the groups.

Conclusions:

• Corticosteroid administration in emergency departments for allergic reactions or anaphylaxis is not associated with reduced relapse to care within 7 days.
• The findings suggest that the routine use of corticosteroids for these conditions may not be clinically beneficial.
• Further research may be warranted to identify specific patient subgroups who might benefit from corticosteroid therapy.