Regional AnalgesiaThe Effect of High-dose Versus Low-dose Epidural Fentanyl on Gastric Emptying in Nonfasted Parturients: A Double-blinded Randomized Controlled TrialFiszer, E.; Aptekman, B.; Baar, Y.; Weiniger, C.F. Author Information Department of Anaesthesia, Intensive Care and Pain, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel Obstetric Anesthesia Digest 42(4):p 202, December 2022. | DOI: 10.1097/01.aoa.0000891728.01120.27 Buy Metrics 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. Copyright © 2022 Wolters Kluwer Health, Inc. All rights reserved.