UNBLOCKED SEGMENTS ESI EPIDURAL ANALGESIA FOR RELIEF OF PAIN IN LABOUR
Open Access
- 1 July 1972
- journal article
- research article
- Published by Elsevier in British Journal of Anaesthesia
- Vol. 44 (7) , 676-679
- https://doi.org/10.1093/bja/44.7.676
Abstract
The incidence of missed, unblocked segments during continuous epidural analgesia for relief of pain in labour and vaginal delivery was studied in 433 patients. Six different local anaesthetic agents were tested: the carbonated salts of lignocaine and prilocaine, and the hydrochloride salts of lignocaine, prilocaine, bupivacaine and amethocaine. The incidence of painful or unblocked segments ranged from 1 per cent with carbonated lignocaine, to 12.8 per cent with amethocaine hydrochloride, and it was four times higher with lignocaine hydrochloride than with carbonated lignocaine.Keywords
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