<prompt> Which of the following is not an anesthetic that acts for more than 2hrs?BupivacainePrilocaineEtidocaineTetracaine  <response>: Prilocaine have only intermediate duration and potency 30-90 min. Tetracaine, Bupivacaine, Etidocaine have long duration and potency 120 min. Ref: Miller Anaesthesia, 5th Edition, Page 586. 