Objective: To determine whether the β-lactam allergy delabeling was safe and cost-saving in Primary Care (PC) patients.
Design: We have conducted a retrospective chart review of PC patients with β-lactam allergy label evaluated in our Allergy Unit between 2017 and 2022. SITE: Allergy Department. Hospital Virgen del Rocio (Sevilla).
Participants: A total of 391 patients labeled for β-lactam allergy in PC were studied.
Main Measurements: (a) Outcome evaluation of a β-lactam allergy delabeling procedure. (b) A ratio between the total e-prescribed antibiotic cost and the number of treatment days (the experimental daily antibiotic cost or EDAC) before and after delabeling was analyzed in delabeled and truly allergic patients.
Results: The results of skin testing were positive in 9.2% of the reported cases (36 of 391 patients). The reactions to oral provocation challenge (OPC) occurred in 2.14% of the patients who underwent negative skin testing to offending β-lactam (in 15 of 699 OPC). A total of 307 patients (78.5%) were delabeled; 70 (17.9%) had a β-lactam selective response and 14 (3.59%) reacted to both penicillin and cephalosporin. The EDAC before and after the procedure in delabeled patients was significantly lower (0.88 € vs 0.62 €, p<10), than that observed in truly allergic group (0.87 € vs. 0.76 €, p=not significant).
Conclusion: To delabel β-lactam allergy in Primary Care patients is safe in most patients, cost-saving in antibioticotherapy, and allows identify the main clinical β-lactam allergy phenotypes that benefit from this procedure.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11152605 | PMC |
| http://dx.doi.org/10.1016/j.aprim.2024.102925 | DOI Listing |
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