Different operations have different risks of infection. Long, complex operations involving high levels of blood and irrigating fluids, carry the highest risk while risk is lower, but still present, in shorter operations where large amounts of body fluids are not expected.
Even with careful observance of hygiene standards, and execution of the usual antibiotic prophylaxis, after elective surgical procedures there is infection at the surgical site in approx. 1-5 % of cases. For the patients affected this means prolongation of their pain and functional restrictions – even if there are no more serious consequences. (Herwaldt LA et al., A prospective study of outcomes, healthcare resource utilisation, and costs associated with postoperative nosocomial infections. Infect Control Hosp Epidemiol 2006;27:1291-1298)