Clinical progress note: De-Labeling penicillin allergies

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.