A mixture of nitrous oxide and oxygen in equal proportions (Entonox or Equanox) is an effective analgesic and is considered safe with minimal side effects. The mixture is ideal for treating short term pain. We report a serious neurological problem in a patient using such a mixture to control pain from the daily packing of a large perineal cavity.
Case reportA 21 year old man presented with a short history of being unable to stand. He had had a series of serious operations for the treatment for inflammatory bowel disease over a four year period-colectomy, ileostomy, and laparotomy with the formation of an ileoanal pouch. He developed pelvic sepsis requiring the laying open of an extensive perineal abscess.
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