• J Gladwin, S Maese, and B Ballisat.
• Anaesthetic Department, North Bristol NHS Trust, Bristol, UK. Electronic address: james.gladwin@nhs.net.
• Int J Obstet Anesth. 2022 Nov 1; 52: 103595103595.

IntroductionThe Obstetric Anaesthetists' Association has released a statement outlining the disruption to supply of the Portex® Loss of Resistance Syringe (Smiths Medical, UK) which is commonly used for epidural insertion within our Trust. We sought to investigate the use of standard available syringes for epidural insertion and whether tactile feedback when getting loss of resistance was similar.MethodsUsing an epidural trainer model, we asked anaesthetists regularly working in the maternity unit to trial three alternative syringes (10 mL BD Emerald, 10 mL BD syringe from our epidural packs, and 20 mL BD Plastipak) (Becton Dickinson U.K. Limited, UK) and to complete a qualitative questionnaire about their experience.ResultsResponses from 16 anaesthetists, including individuals with a range of obstetric anaesthetic experience who regularly provide obstetric anaesthesia, were collected. With the BD Emerald 10 mL syringe, 81% considered there was no difference or only a slight difference when feeling for loss of resistance. For the BD 10 mL syringe, this figure was 75%. With the 20 mL syringe 66% reported either a reasonable or marked difference in tactile feel. The most popular syringe was the 10 mL BD Emerald syringe.ConclusionUsing an epidural training mannequin, this study suggests that it is still possible to elicit clear loss of resistance using alternative syringes. Of the three alternative syringes commonly available in our organisation, the BD Emerald 10 mL syringe was the most popular.Copyright © 2022 Elsevier Ltd. All rights reserved.

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