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What is “relative analgesia?”
  1. M C Howes1
  1. 1Accident and Emergency Department, Royal Preston Hospital, Preston PR2 9HT, UK;
  1. Correspondence to:
 Dr G J Browne

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I welcome the paper by Frampton et al1 describing their experiences of nurse administered nitrous oxide, which adds further evidence to the literature2 supporting this technique as a useful and safe method of easing the suffering of children during their attendance at an emergency department.

I feel that the use of the term “relative analgesia” is somewhat confusing; this is not a term previously encountered in the literature describing sedative/analgesic techniques. The United States guidance (their reference 2) does not use this term when defining sedation levels nor do the current UK3,4 and Australasian5 guidance and …

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