Local anesthesia

English translation: local anesthesia

11:51 Jan 18, 2020
English language (monolingual) [PRO]
Medical - Medical: Dentistry / Surgery
English term or phrase: Local anesthesia
Where is local anesthesia injected?: within the nerve or around the nerve or on the nerve?
Vichu
Selected answer:local anesthesia
Explanation:
Local anesthesia, as the name implies, is a procedure to produce anesthesia in a localized area, as opposed to general anesthesia which renders the patient oblivious to pain everywhere.

Local anesthesia is further distinguished from regional anesthesia, also known as a nerve block.

Nerve blocks are administered to an area adjacent to a nerve, usually at some discrete distance from the area to be anesthetised. For example, one could apply anesthesia adjacent to the digital nerves in a finger close to its attachment to the hand, to freeze the whole finger for surgery to the nail bed.

In contract, local anesthesia is applied directly to the area being anesthetized. In the example above, the needle would be applied to the finger near the nail. We would not normally do that, because the skin is very tight there and the injection would be painful.

In any case, the anesthetic is not injected directly into a nerve. This could damage the nerve, and would be experienced as an unpleasant shock by the patient.
Selected response from:

Michael Barnett
Local time: 20:24
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SUMMARY OF ALL EXPLANATIONS PROVIDED
5 +2local anesthesia
Michael Barnett
4[Definition]
Elias Marios Kounas
5 -1the medication is injected into the skin
Di ZHU


Discussion entries: 2





  

Answers


11 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5
local anesthesia
[Definition]


Explanation:
Local anesthesia is any technique to induce the absence of sensation in a specific part of the body, generally for the aim of inducing local analgesia, that is, local insensitivity to pain, although other local senses may be affected as well.

https://en.m.wikipedia.org/wiki/Local_anesthesia

Elias Marios Kounas
Greece
Local time: 02:24
Native speaker of: Greek

Peer comments on this answer (and responses from the answerer)
neutral  Michael Barnett: This definition is incomplete because it does not differentiate between "local" and "regional" anesthesia.
10 hrs
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11 hrs   confidence: Answerer confidence 5/5 peer agreement (net): +2
local anesthesia
local anesthesia


Explanation:
Local anesthesia, as the name implies, is a procedure to produce anesthesia in a localized area, as opposed to general anesthesia which renders the patient oblivious to pain everywhere.

Local anesthesia is further distinguished from regional anesthesia, also known as a nerve block.

Nerve blocks are administered to an area adjacent to a nerve, usually at some discrete distance from the area to be anesthetised. For example, one could apply anesthesia adjacent to the digital nerves in a finger close to its attachment to the hand, to freeze the whole finger for surgery to the nail bed.

In contract, local anesthesia is applied directly to the area being anesthetized. In the example above, the needle would be applied to the finger near the nail. We would not normally do that, because the skin is very tight there and the injection would be painful.

In any case, the anesthetic is not injected directly into a nerve. This could damage the nerve, and would be experienced as an unpleasant shock by the patient.

Michael Barnett
Local time: 20:24
Native speaker of: Native in EnglishEnglish
PRO pts in category: 4
Grading comment
Selected automatically based on peer agreement.

Peer comments on this answer (and responses from the answerer)
agree  Francisco Chagas
15 hrs
  -> Thanks Francisco.

agree  Tina Vonhof (X)
19 hrs
  -> Thanks Tina.
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14 hrs   confidence: Answerer confidence 5/5 peer agreement (net): -1
local anesthesia
the medication is injected into the skin


Explanation:
Local anaesthesia means the medication is injected into the skin where the operation will be performed. The anaesthesia drug will diffuse locally and block appropriate ion pathways which supress the function of nerves.

Hence the local anaesthesia does not work on the "nerve" directly. Otherwise the anaesthesia method will be named as "nerve block", which injects the medication into the specific nerve directly.



    https://en.wikipedia.org/wiki/Local_anesthesia
Di ZHU
China
Specializes in field
Native speaker of: Chinese

Peer comments on this answer (and responses from the answerer)
disagree  Michael Barnett: No, it is usually injected subcutaneously. It diffuses through the tissue and works directly on the nerve branches. Medication is never injected directly into a nerve, except by mistake.
5 hrs
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