Background: Compared with other facial fractures, mandibular fractures have the highest rate of postsurgical site infection. There is strong evidence to suggest that postoperative antibiotics do not reduce rates of surgical site infections (SSIs) regardless of duration. However, there are conflicting data in the literature regarding the role of prophylactic preoperative antibiotics in reducing rates of SSIs. This study reviews the rate of infections in patients who underwent mandibular fracture repair who received a course of preoperative prophylactic antibiotics compared with those who received no or 1 dose of perioperative antibiotics.
Methods: Adult patients who underwent mandibular fracture repair at Prisma Health Richland between 2014 and 2019 were included in the study. A retrospective cohort review was conducted to determine the rate of SSI, comparing 2 groups of patients who underwent mandibular fracture repair. Patients who received more than 1 dose of scheduled antibiotics before surgery were compared with those who did not receive any antibiotic treatment before surgery or received only a single dose of antibiotics within 1 hour of incision time (perioperative antibiotics). The primary outcome was the rate of SSI between the 2 groups of patients.
Results: There were 183 patients who received more than 1 dose of scheduled antibiotics before surgery and 35 patients who received a single dose of perioperative antibiotics or did not receive any antibiotics. The rate of SSI was not significantly different in the preoperative prophylactic antibiotics group (29.3%) compared with the patients who received a single perioperative dose or no antibiotics (25.0%).
Conclusion: Extended regimens of preoperative prophylactic antibiotics beyond a single dose at time of surgery do not reduce SSIs after surgical repair in mandibular fractures.
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