Which of the following is the shoest acting local anaesthetic ?: (A) Tetracaine, (B) Bupivacaine, (C) Chlorprocaine, (D) Prilocaine
Answer is C. Procaine and chloroprocaine are the shoest acting local anaesthetics. Prilocaine is intermediate acting, bupivacaine and tetrcaine are long acting local anaesthetics. Reference Essentials of Medical Pharmacology by KD Tripathi, 5e page 320.