The longest acting local anesthetics -: (A) Bupivacaine, (B) Ropivacaine, (C) Dibucaine, (D) Tetracaine
Answer is C. long acting ester local anesthetic -Benzocaine . tetracaine long acting amide local anesthetic- bupivacaine, ropivacaine , levobupivacaine , dibucaine overall longest acting local anesthetic- Dibucaine- Tetracaine- Bupivacaine