Abstract
(Eur J Anaesthesiol. 2022;39:50–57. doi: 10.1097/EJA.0000000000001514) Aspiration of gastric contents is a risk for laboring women who may undergo general anesthesia. Although organizations regard the risk/benefit of eating during labor with varying approaches, it is still important to clarify factors that may contribute to pulmonary aspiration during childbirth. High-dose epidural fentanyl (≥100 µg) has been previously associated with delayed gastric emptying by paracetamol absorption test, but not low-dose fentanyl (<100 µg). As paracetamol does not directly measure the volume of gastric contents, the previously validated gastric ultrasonography technique is used in this study to measure the cross-sectional area (CSA) of the antrum to observe the effects of epidural fentanyl on gastric emptying in nonfasted laboring women.
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