Linezolid desensitization for a patient with multiple medication hypersensitivity reactions

Area of Science:

• Infectious Diseases
• Clinical Pharmacology
• Allergy and Immunology

Background:

• Polymicrobial surgical wound infections necessitate effective antimicrobial treatment.
• Multiple drug hypersensitivity reactions pose significant challenges in selecting appropriate antibiotics.
• Linezolid is a critical antibiotic for treating gram-positive infections, but its use can be limited by hypersensitivity.

Observation:

• A patient with a history of severe hypersensitivity to multiple antibiotics, including vancomycin and cephalosporins, developed a surgical wound infection post-tracheostomy.
• Initial attempts to administer alternative antibiotics like tigecycline and daptomycin, as well as test doses of linezolid, resulted in hypersensitivity reactions.
• A comprehensive 16-step linezolid desensitization protocol was implemented, enabling the patient to receive linezolid therapy without adverse events.

Findings:

• Successful implementation of a linezolid desensitization protocol in a patient with extensive antibiotic allergies.
• Resolution of the polymicrobial surgical wound infection following a 2-week course of linezolid.
• Demonstration of linezolid desensitization as a viable strategy for managing infections in hypersensitive patients.

Implications:

• Linezolid desensitization protocols can be a crucial therapeutic option for patients with severe antibiotic allergies requiring treatment for gram-positive infections.
• Careful monitoring, premedication, and immediate availability of emergency anaphylaxis management are essential for safe drug desensitization.
• Further research into linezolid desensitization protocols is warranted due to limited existing data and its potential clinical utility.