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  • Title: Intranasal ketorolac, diagnosis, and desensitization for aspirin-exacerbated respiratory disease.
    Author: Nguyen A, Zuraw BL, Wu C, Kim A, Christiansen SC.
    Journal: Ann Allergy Asthma Immunol; 2021 Jun; 126(6):674-680. PubMed ID: 33476718.
    Abstract:
    BACKGROUND: Intranasal ketorolac has been proposed as a diagnostic test for aspirin-exacerbated respiratory disease (AERD) and a faster, safer, and reliable addition to facilitating aspirin (ASA) desensitization. OBJECTIVE: We conducted the first prospective study to dissect the impact of intranasal ketorolac incorporation during ASA desensitization vs standard oral protocols in concert with evaluating its diagnostic use for AERD. METHODS: Patients with AERD were enrolled in a prospective open-label observational study between November 2006 and August 2013. Participants selected either one of the following desensitization protocols: intranasal ketorolac 1 day before oral ASA (group 1, combined) or ketorolac challenge with greater than 2 weeks elapsing until oral ASA (group 2, washout). All patients were on a leukotriene-modifying drug (montelukast) for at least 1 week before the challenge. RESULTS: A total of 20 patients were enrolled: 13 in group 1 and 7 in group 2. No significant differences were seen for baseline symptom scores or forced expiratory volume in 1 second. Group 1 exhibited significant increases for the threshold dose of ASA (P = .009), the likelihood of having silent ASA desensitization (P = .01), and decreased reaction severity to oral ASA (P = .04). There were no significant differences in reaction forced expiratory volume in 1 second, the incidence of extrapulmonary symptoms, limited nasoocular reactions, rescue treatment requirements, or time to symptom resolution. There was 100% concordance between reactions to intranasal ketorolac and oral ASA for group 2, supporting its use as a diagnostic test for AERD. CONCLUSION: Intranasal ketorolac is a useful diagnostic test and adjunct within the combined ketorolac/ASA protocol to achieve effective, efficient, and perhaps safer desensitization to ASA for patients with AERD.
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