Every so often a patient will ask me if they need antibiotics before their surgery. I think part of it is out of fear of getting an infection which can be devastating. The rules have changed. There was a recent article in the white journal that was a review of 4300 articles. The results of this exhaustive review was that in the majority of cases NO antibiotics are needed.
Clean surgery with the exception of Cosmetic Breast Surgery do not benefit from antibiotics. Contaminated cases II, III and IV benefit from antibiotics. Usually, the antibiotic was given as a single dose pre-operatively.