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A member asked:
Why do the affects of lidocaine wear off very quickly or not work well for some people? i've had injections for a picc line & ivs, inhaled for manometry, etc. each time, the feeling is back before the procedure has barely begun?
A doctor has provided 1 answer
The time frame for effectiveness varies with local blood flow and an individual's personal response to the drug. There are some forms of this anesthetic that have epinephrine added that decreased its dispersion and delays loss of effect.
Answered 6/23/2022
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