Table 2

Factors influencing antibiotic prophylaxis for surgical site infection prevention

StudySurgeryDesignFindings
Hawn et al. (44)Clean and clean-contaminated surgeryRetrospective cohort of 8137 patients at 108 VA hospitals: factors associated with timely antibiotic prophylaxis administrationEarly dosing accounted for 79% of untimely prophylaxis. Antibiotic administration in the operating room influenced timely prophylaxis (OR 7.74, 95% CI 6.49–9.22)
Turnbull et al. (45)Clean and clean-contaminated surgeryProspective cohort of 4441 patients in single tertiary care hospital to assess health system factors influencing appropriate administration of antibiotic prophylaxisAppropriateness of first dosing improved with written orders (OR 19.7, 95% CI 9.1–42.7, p < 0.001) and orders given in the operating room (OR 13.9, 95% CI 7.5–25.6, p < 0.001); it was reduced with same-day surgery (OR 0.57, 95% CI 0.4–0.82, p < 0.001)
Zoutman et al. (40)Clean surgery (hip-fracture surgery)Retrospective cohort of 352 patients having surgery at 22 hospitals across Canada in 1990 to assess surgical and organizational factors influencing timing of antibiotic prophylaxisLack of a written order, being a nonteaching hospital and shorter duration of surgical procedure were predictive of inappropriate antibiotic prophylaxis
  • CI = confidence interval; OR = odds ratio; VA = Veterans Administration.