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Clinical progress note: De-Labeling penicillin allergies
Carter Groch1, Stephy George2, Daniel Giddings3
1Methodist Richardson Medical Center, Department of Pharmacy, Richardson, Texas, USA.
Abstract:
About 15% of hospitalized adults report a penicillin allergy. Of these patients, approximately 90% tolerate penicillin when re-challenged, potentially due to misattribution of nonallergic rash as hypersensitivity or outgrowing the index reaction. Patients with penicillin allergy labels are more likely to receive less effective therapy, develop antibiotic resistance, incur higher healthcare costs, and have poorer outcomes. Although cephalosporins are recommended for most patients with a reported or confirmed penicillin allergy, de-labeling and removing penicillin allergies represent an impactful antimicrobial stewardship activity. A recently developed scoring tool (PEN-FAST) identifies those at low risk for a recurrent reaction and is less cumbersome than traditional testing methods.
Insights
Many hospitalized adults with a penicillin allergy label can safely take penicillin, as most do not have a true allergy. Removing this label improves treatment, reduces costs, and lowers antibiotic resistance risks.
Area of Science:
- Clinical Medicine
- Infectious Diseases
- Antimicrobial Stewardship
Background:
- Approximately 15% of hospitalized adults report a penicillin allergy.
- A significant proportion of these reported allergies are inaccurate, leading to suboptimal care.
- Penicillin allergy labels are associated with increased healthcare costs, antibiotic resistance, and poorer patient outcomes.
Purpose of the Study:
- To evaluate the impact of penicillin allergy de-labeling as an antimicrobial stewardship activity.
- To assess the utility of the PEN-FAST scoring tool for identifying low-risk patients for penicillin re-challenge.
Main Methods:
- Review of existing literature on penicillin allergy prevalence and outcomes.
- Analysis of the misattribution of nonallergic rashes as hypersensitivity reactions.
- Introduction of the PEN-FAST tool as a less cumbersome alternative to traditional allergy testing.
Main Results:
- Around 90% of patients with a reported penicillin allergy tolerate penicillin upon re-challenge.
- Misattribution of nonallergic rash or outgrowing the index reaction are common reasons for inaccurate allergy labels.
- The PEN-FAST tool aids in identifying patients suitable for penicillin de-labeling.
Conclusions:
- Removing inaccurate penicillin allergy labels is a crucial antimicrobial stewardship intervention.
- The PEN-FAST tool offers a practical method for assessing penicillin allergy risk.
- De-labeling penicillin allergies can lead to more effective antibiotic use and improved patient outcomes.
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