Effect of the implementation of infection prevention measures by an infection prevention link physician in trauma/orthopaedics surgery on hygiene-relevant processes and nosocomial infections

The German Infection Protection Act and KRINKO recommend nominating one authorized medical specialist in every medical department as an infection prevention link physician (PLP). Detailed evidence on the contribution of PLPs to reducing infection rates is not available in Germany. The "HygArzt"-study investigated whether, and to what extent, a PLP in orthopaedics/trauma surgery is able to improve hand hygiene adherence (HHA), process steps of dressing change, nosocomial infection (NI) and surgical site infection (SSI) rates by implementing an infection prevention bundle (IPB). In consideration of a literature review on infection prevention measures in orthopaedics/trauma surgery and existing departmental hygiene standards, supported by the responsible infection control specialist, an IPB was developed by an interdisciplinary team and implemented by a PLP. The effects of IPB on NI, SSI, and HHA were determined in a pre-post study design on three trauma surgery/orthopaedic wards of a university hospital. In pre-post comparison HHA was significantly increased, and NI rates were reduced significantly. The greatest increase in adherence occurred in the pre-indications "Before touching a patient" (pre: 37.3%; post: 73.0%), "Before clean/aseptic procedure" (pre: 34.2%; post: 75.5%) and "Before surgery" (pre: 9.7%; post: 57.0%). The analysis of NI and SSI rates (NI: =0.03; SSI: =0.01; relative risk (RR) of 0.53 in each case) revealed rate reductions. The implementation of an IPB by a PLP led to an optimisation of processes and to a reduction of SSIs and NIs. PLPs seem to have the potential for targeted, group-specific implementation of complex IPBs.