The recommended time for prophylactic antibiotic is:
Ans. (A) 30 min prior to induction of anesthesia(Ref: Katzung 11th/e p898)Antibiotic should be present in adequate concentration at the operative site before incision and throughout the procedure.Parenteral agents should be administered during the interval beginning 60 minutes before incision; administration up to the time of incision is preferred.
30 min prior to induction of anesthesia
15 min after the initiation of surgery
At the time of induction
At the time of skin incision
Anaesthesia