local anaesthetic

Question 1

what is a local anaesthetic?

Answer 1

a substance that is applied around a local nerve fibre to block any conductions

Question 2

what order do the sensations disappear?

Answer 2

pain
cold
warmth
touch 
pressure

Question 3

why do we use local anaesthetics?

Answer 3

to reduce the amount of GA
provides analgesia
minimise cardiac depression

Question 4

what are the local anaesthetic drugs that are used in practice?

Answer 4

lignocaine
bupivacaine
mepivicaine

Question 5

disadvantages with using local anaesthetics?

Answer 5

if injected into the nerve fibre then it could cause temporally or permanent loss of function
tissue irritation
allergic reaction
toxicity risk
hypotension

Question 6

what is topical anaesthetics?

Answer 6

when the anaesthetic is absorbed on the topical area and is aimed at a particular spot.

EMULA cream, lignocaine spray

Question 7

what is local infiltration?

Answer 7

this is went the anaesthetic agent is injected into the superficial tissue.

removal of a small skin tumor

Question 8

what is reginal anaesthetics?

Answer 8

this is when local anaesthetic is into a nerve plexus or into the spinal cord.

epidural, splash block