Q. Regarding local anaesthetic agents (Solved)

1. Lignocaine is also an antiarrhythmic of the Vaughan Williams classification group 1A

2. At normal pH the larger fraction of local anaesthetic in the body fluids will be in the unchanged form

3. Bupivacaine may cause an apparent cyanosis in some patients

4. The duration of action of procaine will be increased in the presence of liver disease

5. Local anaesthetic agents block conduction in small myelinated axons prior to blockade of other axons