• Curr Opin Anaesthesiol · Jun 2019

    Review

    Epidural test dose in obstetric patients: should we still use it?

    • Christina Massoth and Manuel Wenk.
    • Department of Anesthesiology, Intensive Care and Pain Medicine, University Hospital Münster, Münster, Germany.
    • Curr Opin Anaesthesiol. 2019 Jun 1; 32 (3): 263-267.

    Purpose Of ReviewAs the application of a test dose after epidural catheter insertion in obstetrics has recurrently been associated with serious adverse events affecting both maternal and foetal outcomes, the question whether to test or not remains a controversial issue.Recent FindingsPresent guidelines do not provide clear recommendations in this regard and several recent surveys indicate a heterogeneity in clinical routine.SummaryPhysiological alterations during pregnancy and labour restrict the use and also the validity of traditional test agents. Epinephrine is not appropriate to detect a vascular insertion in labour and the application of a local anaesthetic test dose may lead to dose-dependent fatal consequences should the catheter be intrathecal, due to an increased sensitivity in parturients. Given the current practice of opioid-amended-low-concentration epidurals, the waiving of a test dose results at worst in a failed epidural, a stark contrast to the potentially severe to fatal complications of a 'traditional' test dose. Hence, an originally preventive measure providing potentially more harm than the consequences of the situation aimed to prevent, should not be recommended. A simple fractionated administration of the initial analgesic dose seems reasonable though.

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    I believe in the epidural adage every dose is a test dose”... but in case you need convincing⇡

    Daniel Jolley  Daniel Jolley
     
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