Allergic reactions and anesthesia

Area of Science:

• Anesthesiology
• Immunology

Background:

• Anesthetic-induced allergic reactions, including anaphylaxis, present diagnostic challenges due to overlapping symptoms with pharmacological effects.
• While rare (1:20000), adverse events from anesthetics and muscle relaxants necessitate accurate differentiation from true allergic responses.

Purpose of the Study:

• To highlight the difficulties in diagnosing allergic reactions during anesthesia.
• To emphasize the importance of distinguishing true anaphylaxis from other adverse effects.
• To review diagnostic and therapeutic strategies for anesthetic allergies.

Main Methods:

• Review of existing literature on anesthetic-induced hypersensitivity reactions.
• Discussion of diagnostic challenges, including differentiating allergic reactions from drug side effects.
• Outline of diagnostic tests such as blood and skin tests.

Main Results:

• Muscle relaxants are the most frequent cause of allergic reactions during anesthesia, followed by latex, chlorhexidine, antibiotics, and opioids.
• Diagnostic testing (blood and skin tests) is essential but lacks a gold standard, with potential for false positives and negatives.
• Despite testing, premedication with antihistamines and steroids is recommended due to the possibility of intolerance.

Conclusions:

• Accurate diagnosis of allergic reactions during anesthesia requires a targeted approach and comprehensive testing.
• Urgent management based on established protocols is critical when anaphylaxis occurs.
• Increased awareness and education among anesthesiologists regarding anesthetic allergies are necessary.