Preventing surgical-site infections: measures other than antibiotics

Area of Science:

• Infection Control
• Surgical Safety
• Microbiology

Background:

• Surgical-site infections (SSIs) are primarily caused by airborne microorganisms, notably Staphylococcus aureus, contaminating surgical sites.
• Current SSI prevention strategies focus on minimizing airborne particle counts, though their direct correlation with SSI rates remains unproven.
• Operating room (OR) cleanliness traditionally involves ultra-clean ventilation, laminar airflow, HEPA filters, patient preparation, and strict OR discipline.

Purpose of the Study:

• To evaluate the effectiveness of various measures in preventing surgical-site infections.
• To address the controversy surrounding the utility of specific SSI prevention techniques.
• To highlight the critical role of surgical technique and OR behavior.

Main Methods:

• The study reviews existing literature and practices related to SSI prevention.
• It examines the impact of airborne particles and ventilation systems on SSI rates.
• It discusses the challenges in demonstrating the efficacy of individual preventive measures due to low baseline SSI rates and multifactorial influences.

Main Results:

• SSI rates in clean surgery are low (1-2%), influenced by procedure type and patient factors.
• Despite efforts to minimize airborne contamination, a significant correlation between particle counts and SSI rates has not been established.
• The effectiveness of measures like laminar airflow and body exhaust suits is debated.

Conclusions:

• Impeccable surgical technique and strict operating room conduct are unequivocally essential for SSI prevention.
• The low incidence of SSIs and multiple risk factors complicate the validation of specific preventive interventions.
• Further research may be needed to clarify the role of environmental controls versus behavioral practices in SSI reduction.