• James H Bamber, Dominique N Lucas, Felicity Plaat, and Robin Russell.
• Department of Anaesthesia, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK. Electronic address: james.bamber@addenbrookes.nhs.uk.
• Br J Anaesth. 2020 Oct 1; 125 (4): 580-587.

BackgroundData on UK obstetric anaesthetic practice between 2009 and 2014 were collected by the Obstetric Anaesthetists' Association's National Obstetric Anaesthetic Database. This database provides information on workload, variation in practice, and complication rates.MethodsDuring 2009-14, data were submitted by 190 UK hospitals. The number of hospitals that submitted data each year ranged between 114 and 145. During this 6 yr period, between 27 and 35 data items were requested, although not all hospitals submitted information on all data items. The dataset was assessed for quality and only those data items with acceptable quality were analysed.ResultsThe dataset contains information on 3 030 493 deliveries, 770 545 Caesarean sections, 623 050 women with labour neuraxial analgesia, and 61 121 general anaesthetics for Caesarean section. There was increased use of patient-controlled regimens for labour neuraxial analgesia over the 6 yr period. The mean rate of general anaesthesia used for Caesarean section was 8.75% (95% confidence interval, 8.26-9.24%). The rate of failed intubation for general anaesthesia for Caesarean section was one in 379. Inadvertent dural puncture rates varied between hospitals with a mean of 1.2% (95% confidence interval, 1.02-1.37%). The rate of a high neuraxial block causing unconsciousness was one in 6667 for all blocks.ConclusionsThis unique large dataset provides a valuable insight of obstetric anaesthetic activity in the UK. Although missing data may place limitations on interpretation, it provides comparative estimates for the rates of rare complications and highlights variations in practice in time and place.Copyright © 2020 The Author(s). Published by Elsevier Ltd.. All rights reserved.

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