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Reducing the pain of intradermal lignocaine injection by pH buffering.
  1. R McGlone,
  2. A Bodenham
  1. Accident and Emergency Department, Pinderfields Hospital, Wakefield, England.

    Abstract

    The effect of pH on the pain of administration and efficacy of 1% lignocaine was investigated in a prospective, double-blind, randomized study of 20 adult volunteers. Onset and spread of anaesthesia by intra-dermal injection were not altered, but there was a significant reduction in pain scores with a higher pH. Overall, pain scores appear to be more dependent on the speed of injection rather than alteration of pH.

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