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Isoflurane in labour
Author(s) -
WEE M. Y. K.,
HASAN M. A.,
THOMAS T. A.
Publication year - 1993
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/j.1365-2044.1993.tb07005.x
Subject(s) - isoflurane , medicine , vaporizer , anesthesia , nitrous oxide , ventilation (architecture) , mechanical engineering , pathology , engineering
Summary A comparison of the analgesic efficacy of Entonox (50% nitrous oxide in oxygen) and Entonox with 0.2% isofturane was made in 18 consenting mothers during the first stage of labour. The inhalational gases were self‐administered during contractions over a 3 h study period using a standard Entonox demand valve and breathing system. Isoflurane 0.2% was added from an Ohmeda Isotec drawover vaporizer and the inspired concentration ofisoflurane was analysed continuously using a Datex Ultima analyser. Linear analogue scores for pain were significantly lower (p < 0.001) during the Entonox‐isoflurane administration compared with Entonox alone. Drowsiness was not a clinical problem and there was a high acceptance rate for Entonox‐isoflurane inhalational analgesia during labour.