Postoperative Prophylactic Antibiotic Use in Breast Reduction Mammoplasty: A Single Centre Retrospective Cohort Study.

Introduction: Breast reduction mammoplasty (BRM) is a common procedure performed by plastic surgeons treating patients with hypermastia. It is customary to give preoperative prophylactic intravenous antibiotics for BRM, followed by several days of postoperative prophylactic oral antibiotics, despite the lack of evidence of their effectiveness in preventing surgical site infections (SSIs). The purpose of this study is to determine if the addition of prophylactic postoperative antibiotics is more effective in preventing SSIs in comparison to a single dose of preoperative prophylactic antibiotics in BRM. Methods: A retrospective analysis of 124 elective BRM cases by a single senior plastic surgeon was completed. Two study groups were formed based on the location of surgery and each group was assigned a different antibiotic regimen. The first antibiotic regimen consisted of a single preoperative intravenous dose of antibiotics (group 1), while the second regimen consisted of a preoperative intravenous dose followed by a 5-day course of oral antibiotics (group 2). Results: Overall SSI rate was 5.6%. Infection rate in group 1 was 8.1% in comparison to 3.2% for group 2 (P value .44). Overall, the incidence of complications was 29.0%; 38.7% in group 1 and 19.4% in group 2 (P value .03). Complications consisted of 35 cases of delayed wound healing, 7 SSIs and 2 hematomas requiring evacuation. Conclusion: Study results demonstrated that the use of postoperative prophylactic antibiotics for BRM had no significant effect on the rate of SSIs.