Rapid Antigen Detection Testing as Supportive Tool in Group A Streptococcal Necrotizing Soft Tissue Infection...

Area of Science:

• Infectious Diseases
• Surgical Pathology
• Diagnostic Microbiology

Background:

• Necrotizing soft tissue infections (NSTI) caused by Group A Streptococcus (GAS) are severe, rapidly progressing, and have high mortality rates.
• Early recognition and intervention are crucial for managing GAS NSTI.
• Rapid antigen detection testing (RADT) is standard for GAS pharyngitis but its role in NSTI is not well-defined.

Purpose of the Study:

• To evaluate the utility of GAS RADT as an adjunctive diagnostic tool in patients with necrotizing soft tissue infections.
• To explore how RADT results influence surgical management decisions in GAS NSTI.

Main Methods:

• Presentation of a case series involving three patients diagnosed with GAS necrotizing soft tissue infections.
• Analysis of how RADT results, in conjunction with clinical findings, impacted surgical interventions and patient management.

Main Results:

• RADT provided valuable adjunctive diagnostic information in all three cases.
• Positive RADT results, combined with clinical signs, facilitated timely extensive debridement, prompted further surgical exploration, and supported early intervention.
• All patients in the series survived and preserved their limbs.

Conclusions:

• GAS RADT may serve as a useful adjunctive tool in the diagnosis and management of necrotizing soft tissue infections.
• Its results can inform decisions regarding surgical debridement, exploration, and wound monitoring.
• Further studies are needed to establish the definitive role of GAS RADT in NSTI.