Antibiotic Prophylaxis for Inguinal Hernia Repair with Mesh

Evidence-Based Recommendations

The World Journal of Emergency Surgery recommends synthetic mesh for all inguinal hernias without intestinal complications in clean surgical fields, as it reduces recurrence without increasing infection risk, and antibiotic prophylaxis further reduces the already-low infection risk 1, 2
The American College of Surgeons or equivalent guideline society suggests that mesh repair shows significantly lower recurrence rates (OR = 0.2) with similar SSI rates when comparing cases with and without bowel resection in clean-contaminated fields 4

For clean-contaminated fields, synthetic mesh can still be safely used with intestinal strangulation and/or bowel resection without gross spillage, according to the World Journal of Emergency Surgery 3
For contaminated/dirty fields, primary repair without mesh is recommended for defects <3 cm, and biological mesh is preferred over synthetic mesh for defects ≥3 cm, as per the guidelines from Praxis Medical Insights or equivalent 4, 2

The World Journal of Emergency Surgery found that risk factors that increase the importance of antibiotic prophylaxis include emergency operations (RR = 2.46 for mesh infection), ASA score ≥3 (RR = 1.40 for mesh infection), smoking (RR = 1.36 for mesh infection), and longer operative duration 5
The infection risk with mesh is inherently higher than tissue repair because bacteria can adhere to synthetic material and form biofilms, making prophylaxis particularly important, as stated by the World Journal of Emergency Surgery 5