person is unconscious, brain is supressed. Much higher risk compared to local and therefore only given when esstential
2 of 17
Anesthesia
loss of ALL sensation
3 of 17
analgesia
treatment of pain. selective loss of pain sensation
4 of 17
Local anesthetic molecules parts
have lipophillic part, hydrophillic part, and EITHER a amide OR ester group
5 of 17
Topical anesthesia
ie for skin, cornea. sprays creams etc for local pain
6 of 17
infiltration anesthia
still local - injection into the sub cut tissue - ie dental procedures. LOCAL .
7 of 17
what is often added in conjunction with a local anesthetic
adrenaline, causes vasocontriction , therefore limiting spread. keep local acting
8 of 17
Nerve block
still LOCAL. regional - numbs larger area than most local .
9 of 17
Epidural
injection into lumbar epidural space. catheter often left in in case topup req. Still local.
10 of 17
Spinal anesthetic
step up from epidural. injection into the spinal fluid. can be used for short surery
11 of 17
Advantages of local
quicker return to normal life, less risk,
12 of 17
Mechanism of local
pass through CM in unionised form, however the ionised form = active. Once insdie cell ionises into active from , then blocks Na channels from inside - prvent APs forming
13 of 17
Lidocain is a weak
base, thereofre in acidic conditions is ionised, to accommodate this a higher dose is req in acidic conditions
14 of 17
Use dependent
degree of nerve block is proportional to the rate of stimulation
15 of 17
When selecting your local anesthetic need to consider (2)
1. length of effects 2. side effects
16 of 17
adverse effects of local
can cause hypersensitivity
17 of 17
Other cards in this set
Card 2
Front
General
Back
person is unconscious, brain is supressed. Much higher risk compared to local and therefore only given when esstential
Comments
No comments have yet been made