Purpose. To determine whether a change in prophylactic antibiotic protocol for orthopaedic surgeries may reduce the frequency of Clostridium difficile-associated diarrhoeal infections. wound infection. The frequency of C difficileassociated diarrhoeal infection decreased after use of the new antibiotic protocol (from 4 to 1%, p=0.004), particularly in the trauma patients (from 8 to 3%, p=0.02); in the elective patients the difference was not significant (from 1 to 0.5%, p=0.27). The change of antibiotic protocol did not significantly affect the incidence of deep wound infections in the trauma (p=0.46) or elective (p=0.90) patients. The rate of C difficile infection was 8-fold higher in the trauma than elective patients, both before and after the change of protocol. Conclusion. Changing antibiotic protocol is one way of reducing the incidence of C difficile-associated diarrhoeal infections in orthopaedic patients, without increasing the rate of deep wound infections.
Methods