Penicillins Lead in SSI Prevention

Network meta-analysis compares antibiotic classes for colorectal surgery prophylaxis

By
Conexiant News Staff
March 3, 2026
3 min

Conexiant

Objective:

To evaluate the effectiveness of different antibiotic regimens in preventing surgical site infections (SSIs) in elective colorectal surgery.

Approach:

Key Findings:

Broad-spectrum penicillins and cephalosporin-based combinations were the most effective in reducing SSI risk.
Broad-spectrum penicillins were associated with a 74% relative reduction in SSI risk.
They were also the only class linked to reduced all-cause mortality.
No significant differences in length of hospital stay or overall adverse event rates among most regimens.

Interpretation:

The findings highlight the importance of selecting appropriate antibiotic classes for prophylaxis in colorectal surgery, with broad-spectrum penicillins showing the most consistent efficacy.

Limitations:

Many comparisons were based on small trials with frequent risk of bias.
Inconsistent reporting of comorbidities and protocols limited subgroup analyses.