Surgery Arrange the following long acting LA in descending order of their duration of action. A Dibucaine>Etidocaine>Tetracaine> Bupivacaine. B Dibucaine>Tetracaine>Bupivacaine> Etidocaine. C Tetracaine>Dibucaine>Bupivacaine>Etidocaine. D Tetracaine>Bupivacaine>Dibucaine> Etidocaine. 💡 Explanation Arrange the following long acting LA in descending order of their duration of action. ✓ Correct Answer: A. Dibucaine>Etidocaine>Tetracaine> Bupivacaine.