Patch Testing for Metal Allergy With Manufacturer-Supplied Materials Before Nuss Bar Insertion

Area of Science:

• Dermatology
• Allergology
• Medical Devices

Background:

• Increasing use of metal implants necessitates awareness of nickel allergy.
• Preoperative patch testing for nickel allergy is standard for pectus excavatum (PE) patients undergoing the Nuss procedure.
• A manufacturer-provided metal disc for preoperative nickel sensitivity testing has unclear efficacy.

Purpose of the Study:

• To evaluate the sensitivity of the metal disc in detecting nickel allergy.
• To compare the metal disc's sensitivity against standard patch testing methods.

Main Methods:

• Two PE patients underwent patch testing with the metal disc pre-Nuss procedure.
• Seven patients with chronic dermatitis and risk factors for nickel allergy were also tested with the metal disc.
• All patch testing adhered to established dermatological standards.

Main Results:

• The metal disc demonstrated potentially inadequate sensitivity for detecting nickel allergy.
• Standard patch testing may offer superior sensitivity in diagnosing nickel allergy.

Conclusions:

• The metal disc may not be a sufficiently sensitive tool for preoperative nickel allergy screening before the Nuss procedure.
• Standard patch testing with nickel sulfate formulations is recommended for accurate nickel allergy diagnosis.