Aspirin intolerance in asthma: Detection by oral challenge,☆☆

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Abstract

Oral aspirin challenge was used to detect aspirin intolerance in selected asthmatic patients who did NOT give a history of asthma following aspirin ingestion. Forty-two asthmatic patients with either nasal polyps, sinusitis, or severe asthma requiring corticosteroid therapy were challenged with aspirin. Under carefully controlled circumstances and at a time when their asthma was stable, patients ingested 640 mg. of aspirin (Ascriptin) after taking all their usual maintenance medications. Several parameters of lung function and clinical symptomatology were followed serially over a 4 hour period. Eight of 42 challenges were positive. When these patients were combined with 14 patients who were intolerant to aspirin by history, the prevalence of aspirin intolerance in our asthmatic population was 8 per cent. Patients who were intolerant to aspirin showed a statistically significant increase in the prevalence of the hallmark criteria of nasal polyps, sinusitis, and steroid dependency when compared to all new asthmatic patients during a 2 year period. Aspirin challenge in selected patients can detect aspirin intolerance not recognized by history alone. These patients can be warned to avoid aspirin ingestion in the future. In addition, their management can be improved by recognizing this variant of the asthma syndrome.

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    Supported in part by Grant, No. AI-00214 and AI-10386 from the National Institutes of Health.

    ☆☆

    Presented in part at the Annual Meeting of the American Academy of Allergy, San Francisco, Calif., February 7, 1972.

    United States Army-sponsored Allergy Fellowship Trainee.

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