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J Dermatol Surg Oncol. 1990 Sep;16(9):842-5.

Neutralized lidocaine with epinephrine for local anesthesia--II.

Author information

1
Department of Dermatology, University of California, Irvine.

Abstract

The pain usually associated with intradermal injection of lidocaine and epinephrine is significantly attenuated by the addition of either sodium bicarbonate or sodium hydroxide to 1% lidocaine with epinephrine. This suggests that sodium bicarbonate attenuates pain by increasing the pH of the anesthetic solution. The clinical effects of a solution of lidocaine (1%) with epinephrine (1:100,000) and sodium bicarbonate (80 meq/L) were assessed after infiltration in skin. Anesthetic stored for 1 week caused nearly equal areas of anesthesia and vasoconstriction as an identical solution prepared on the day of use.

PMID:
2168907
[Indexed for MEDLINE]

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