True about local anaesthetic –
a) Cocaine acts by decreasing norepinephrine
b) Act by decreasing sodium entry into cell
c) Lignocaine is an amide
d) Dibucaine is drug of choice for epidural anaesthesia
1.a
2.c
3.ac
4.bc
view explanation
Local anesthetics prevent influx of Na+ by inhibiting Na+ channel.
Lignocaine (Lidocaine) is an amide.
Dibucaine is not used for epidural anesthesia. Lidocaine and bupivacaine are the most commonly used local anesthetics for spinal and epidural anesthesia.