Intraoperative anaphylaxis: an association with latex sensitivity

Area of Science:

• Anesthesiology
• Immunology
• Pediatric Surgery

Background:

• Latex products are increasingly recognized as a cause of severe intraoperative anaphylactic reactions.
• Pediatric patients with specific congenital abnormalities may be at higher risk.

Purpose of the Study:

• To identify a specific pediatric patient group at increased risk for intraoperative anaphylactic reactions to latex.
• To investigate the association between prior rubber material exposure and latex allergy in these patients.

Main Methods:

• Retrospective review of 15 pediatric patients with spina bifida or congenital urologic abnormalities who experienced intraoperative anaphylactic reactions.
• Analysis of patient history for previous rubber exposure, skin reactions, atopy, and operative procedures.
• Allergy skin testing and RAST (Radioallergosorbent test) for latex antigen in affected patients.

Main Results:

• Fifteen patients experienced 19 intraoperative anaphylactic reactions, ranging from urticaria to cardiorespiratory collapse.
• All patients had frequent prior exposure to rubber materials since infancy.
• Positive allergy skin tests and RAST to latex antigen were confirmed in all evaluated patients.

Conclusions:

• Pediatric patients with spina bifida or congenital urologic abnormalities and frequent prior rubber exposure are at significant risk for intraoperative latex allergy.
• Preoperative allergic evaluation for latex allergy is recommended for similar high-risk pediatric patients.
• Strict avoidance of latex products is essential for sensitized patients to prevent severe anaphylactic reactions.