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Risk factors for surgical site infection in free-flap reconstructive surgery for head and neck cancer: Retrospective
Peter Francis Gearing1, John Frederick Daly1, Nicholas Shi Jie Tang2
1The Royal Melbourne Hospital, The University of Melbourne, Parkville, Victoria, Australia.
Background:
Surgical site infections (SSI) are common complications of free-flap reconstruction for head and neck cancer defects. This study aimed to identify risk factors for SSI following a significant change in local antibiotic prophylaxis practice.
Methods:
A retrospective cohort study was conducted of 325 patients receiving free-flap reconstruction for head and neck cancer defects at a tertiary hospital in Melbourne, Australia between 2013 and 2019. Charts were queried for recipient SSI (primary outcome), donor SSI, other infections, antibiotic use, hospital length of stay, and mortality.
Results:
Risk factors for SSI included female sex, T-classification, hardware insertion, clindamycin prophylaxis, and operative duration. There was a trend toward increased SSI with shorter ≤24 h prophylaxis (OR: 0.43).
Conclusion:
Antibiotic duration and type were associated with SSI. Complexity of surgery, T-classification, hardware use, and operative duration were also independently associated with SSI. A prospective trial is indicated to elicit optimal prophylactic antibiotic duration.
