Risk Factors for Surgical Site Infection

High risk patients



Elderly patients1-3


Altered immune response1-3

ASA* score > 31-3

Delay of operation1-3

Operation specific risk

Contaminated or dirty/infected wound1-3

Length of surgery1-3

Adapted from references 1-3

*ASA: American Society of Anesthesiology

1. Mangram AJ. et al., Infect Control Hosp Epidemiol 1999; 20: 247–280
2. Tang R. et al., Ann Surg 2001; 234: 181–189
3. Scottish Intercollegiate Guidelines Network, Antibiotic prophylaxis in surgery. SIGN 104. July 2008 accessed at: http://www.sign.ac.uk/pdf/sign104.pdf