Adverse responses to local anaesthetics

Area of Science:

• Anesthesiology
• Allergy and Immunology

Background:

• Adverse responses to local anesthesia are common.
• Distinguishing true allergy from other reactions is crucial for patient management.

Purpose of the Study:

• To investigate the incidence of true allergy in patients reporting adverse reactions to local anesthesia.
• To evaluate the safety and efficacy of progressive challenge testing.

Main Methods:

• Twenty-seven patients with a history of adverse reactions to local anesthesia underwent progressive challenge testing.
• The study assessed patient responses to identify true allergic reactions.

Main Results:

• True allergy to local anesthesia was confirmed in only one out of twenty-seven patients.
• The majority of adverse responses were not indicative of true allergy.

Conclusions:

• Progressive challenge testing is valuable in diagnosing local anesthesia allergy.
• Preservative-free local anesthetics are recommended for patients with a history of adverse reactions, especially if testing is negative.
• Reactions to additives or preservatives in local anesthetics should be considered.