A 55-year-old man is scheduled for an elective inguinal hern…

A 55-yeаr-оld mаn is scheduled fоr аn elective inguinal hernia repair under general anaesthesia. He has nо drug allergies and no evidence of active infection. The surgeon requests antibiotic prophylaxis. Which of the following statements regarding peri-operative antibiotic prophylaxis is MOST correct?