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Intrathecal diamorphine (heroin) for obstetric analgesia
1Department of Anesthesiology, St Helier Hospital, Surrey, UK.
Abstract:
Intrathecal diamorphine (heroin, diacetyl morphine) 2.5 mg in isotonic saline 2.5 ml was given to 13 patients in labour through a 26 gauge Quincke needle. Three patients were given epidural bupivacaine at a mean of 295 min after injection of diamorphine and a further 2 used 50% nitrous oxide during the second stage of labour. Eight patients needed no additional analgesia for labour although 1 received a pudendal nerve block for forceps delivery. No neonatal complications attributable to diamorphine were observed. There was a high incidence of post partum headache (6/13 cases). The use of a Sprotte needle and a fine spinal catheter might overcome the limitations of spinal headache and limited duration of action respectively.
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