ArticleThe Australian & New Zealand journal of obstetrics & gynaecology2024
Beta-lactam allergy risk stratification in a maternity population in Australia: Scope for allergy de-labelling.
Article in The Australian & New Zealand journal of obstetrics & gynaecology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundUnconfirmed beta-lactam allergy in pregnant people has been associated with higher morbidity, unnecessary exposure to broad-spectrum antibiotics and prolonged hospitalisation. There are no published data on beta-lactam allergies in pregnant people in Australia.
aimsThe aim was to describe patient-reported beta-lactam allergies and appropriateness for antibiotic allergy de-labelling in a maternity cohort in Australia.
methodsMaternity patients aged ≥18 years admitted to our institution between March 2021 and June 2021 with a beta-lactam allergy documented in their electronic medical record were interviewed for details of their allergy. The documented allergies were compared to the allergy history obtained from the interview. Severity of the allergy was rated, and appropriateness for allergy de-labelling was assessed using the Victorian Therapeutics Advisory Group beta-lactam antibiotic allergy assessment tool.
resultsOne hundred and fifty-three beta-lactam allergies (182 reactions) were reported by 145 patients. Penicillin class antibiotics were the most frequently implicated, including unspecified penicillins (95/153, 62%), amoxicillin (19/153, 13%) and amoxicillin-clavulanate (8/153, 5%). Allergy documentation required amending in 52 of 145 patients (36%); 85 of 153 (56%) of the beta-lactam allergies were considered low risk and potentially appropriate for direct oral re-challenge.
conclusionBeta-lactam allergies were inaccurately documented in more than one third of the maternity patients included in our study. As such, education of maternity care providers about the importance of accurate allergy history taking remains an urgent unmet need. Furthermore, allergy assessment and de-labelling during pregnancy should be considered in maternity patients to optimise antibiotic prescribing and to improve maternal and neonatal health outcomes.
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