[Penicillin allergy-Truth or duty?]

Area of Science:

• Pharmacology
• Allergy and Immunology
• Clinical Medicine

Context:

• Beta-lactam antibiotics, including penicillin, are widely used but often avoided due to reported allergies.
• A significant number of patients labeled with penicillin allergy do not have a true allergy, leading to the use of alternative, potentially less effective antibiotics.
• This avoidance contributes to negative clinical outcomes and socioeconomic burdens.

Purpose:

• To highlight the high prevalence of false penicillin allergies.
• To emphasize the importance of accurate allergy assessment in antibiotic stewardship.
• To present a structured algorithm for clarifying beta-lactam antibiotic allergies, particularly penicillin.

Summary:

• Over 95% of patients reporting penicillin allergy exhibit negative results in allergy testing, indicating a false allergy classification.
• Accurate identification of true penicillin allergies is crucial for effective antibiotic stewardship.
• Anesthetists can play a key role in de-labeling penicillin allergy by performing thorough medical histories and risk stratifications.
• The article proposes a delabeling algorithm for beta-lactam antibiotic allergy, focusing on the PEN-FAST score for structured allergy assessment.

Impact:

• Reducing the incidence of false penicillin allergies can lead to safer and more effective antibiotic prescribing.
• Improved antibiotic stewardship through accurate allergy de-labeling can mitigate risks associated with alternative antibiotic use.
• This approach can decrease the individual and public health burden associated with misclassified penicillin allergies.
• Facilitating the safe reintroduction of beta-lactam antibiotics can improve patient outcomes and reduce healthcare costs.