Assessing antibiotic stewardship using the surgical site infection prevention bundle

Antibiotic prophylaxis is crucial in head and neck surgery to prevent infection from clean contaminated wounds. Scottish Intercollegiate Guidelines Network (SIGN) guidance, the gold standard of practice, recommends that administration of broad spectrum antibiotics is discontinued after 24 hours post-operation. A three-audit cycle quality improvement project was conducted to assess clinical practice against SIGN guidance at a large London teaching hospital.

Three change initiatives were implemented to improve antibiotic stewardship. First, an update of Trust guidelines with an associated poster campaign to educate staff and improve awareness. Second, introduction of a specific 'prophylactic antibiotics in head and neck surgery' bundle on the electronic hospital-wide prescribing system. Third, an update to an antibiotic prescribing guide (Microguide).

Over a 3-year study period the number of patients receiving antibiotics beyond 24 hours declined significantly (88% in 2015, 76% in 2016, 25% in 2018), demonstrating improved compliance with SIGN guidelines overall. Despite this, staff documentation of indications for extended antibiotic use remains suboptimal (58% in 2016 and 44% in 2018) as does the number of specimens sent for microbiological analysis (52% in 2016 and 0% in 2018).

Appropriate prophylactic antibiotic prescribing can improve morbidity and mortality rates in head and neck cancer patients. Three change initiatives have been demonstrated which can help to improve prescribing compliance in line with SIGN guidance. Ongoing auditing is required to maintain the longevity of improvements made and encourage staff documentation of indications for extended antibiotic use and microbiology specimen analysis.