Knowledge and attitude of the students about the local anesthetics used during surgery among South Indian population

A local anesthetic is a medication that causes the absence of pain sensation. When it is used on specific nerve pathways, paralysis also can be achieved.[1] Clinical local anesthetics belong to two classes: Amino amide and amino ester.[2] Some of the commonly used local anesthetics are bupivacaine, mepivacaine, prilocaine, lignocaine, etc.[3] For example, 3% of local anesthetics administrated means that 3 g of the drug is dissolved in 100 ml of solution (30 mg/ml).[4] Local anesthetics potency varies in their concentration typically ranging from 0.5% to 4%. For better understanding, bupivacaine is more potent than articaine, permitting it to be formulated as 0.5% concentration (5 mg/mL) rather than 4% concentration (40 mg/mL).[5]