[Retroperitoneal postoperative necrotizing fasciitis].

Area of Science:

• Infectious Diseases
• Surgical Complications
• Microbiology

Background:

• Necrotizing fasciitis is an increasingly frequent and severe complication.
• Understanding its diverse origins and clinical presentations is crucial for effective management.
• Two distinct patient groups were identified based on the etiology and progression of necrotizing fasciitis.

Purpose of the Study:

• To analyze and compare clinical experiences with necrotizing fasciitis in two distinct patient cohorts.
• To investigate the microbiological profiles associated with different origins of necrotizing fasciitis.
• To evaluate the impact of etiology and causative microorganisms on patient outcomes.

Main Methods:

• Retrospective clinical case review of 17 patients with necrotizing fasciitis.
• Categorization into two groups: postoperative (Group 1, n=11) and retroperitoneal (Group 2, n=6).
• Comprehensive microbiological examinations of wound and tissue samples from 13 patients.

Main Results:

• Group 1 (postoperative) exhibited aerobic-anaerobic mixed infections, predominantly Enterobacteroidaceae. Survivorship was 62.6%.
• Group 2 (retroperitoneal) showed a prevalence of anaerobic bacteria, primarily Clostridium species. Survivorship was 16.6%.
• Significant differences were observed in the timing of septic complication onset and clinical manifestations between the two groups.

Conclusions:

• The origin of necrotizing fasciitis significantly influences its clinical course, microbiological findings, and patient prognosis.
• Postoperative necrotizing fasciitis, often polymicrobial, has a better survival rate than retroperitoneal necrotizing fasciitis, which is frequently caused by anaerobic bacteria.
• Tailored therapeutic strategies based on the specific etiology and identified pathogens are essential for improving outcomes in necrotizing fasciitis.