alexa Rational approach to aspirin dosing during oral challenges and desensitization of patients with aspirin-exacerbated respiratory disease.
Immunology

Immunology

Journal of Allergy & Therapy

Author(s): Hope AP, Woessner KA, Simon RA, Stevenson DD

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BACKGROUND: Aspirin desensitization improves clinical outcomes in most patients with aspirin-exacerbated respiratory disease. Most protocols for desensitization are time-consuming.

OBJECTIVE: Our objective was to use historical information about the course of aspirin desensitization to enhance the efficiency of the desensitization protocol.

METHODS: Four hundred twenty subjects with suspected aspirin-exacerbated respiratory disease underwent oral aspirin challenges. Their clinical characteristics were analyzed in relation to features of reactions during aspirin challenges.

RESULTS: Large (FEV(1) decrease >30%) and moderate (FEV(1) decrease 21% to 30%) bronchial reactions occurred in 9% and 20% of subjects, respectively. Multivariate analysis identified risk factors associated with these larger reactions, including lack of leukotriene modifier use, baseline FEV(1) of less than 80% of predicted value, and previous asthma-related emergency department visits. Seventy-five percent of patients reacted to a provoking dose of either 45 or 60 mg. Only 3% of initial reactions occurred after 150- or 325-mg provoking doses, and none occurred after the 650-mg dose.

CONCLUSIONS: Most bronchial and naso-ocular reactions during oral aspirin challenges occurred within a narrow dosing range (45-100 mg). Only 1 of 26 patients without risk factors had a moderate reaction.

This article was published in J Allergy Clin Immunol and referenced in Journal of Allergy & Therapy

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