Effect of gum chewing on gastric volume and emptying: a prospective randomized crossover study

British Journal of Anaesthesia
Lionel BouvetDominique Chassard

Abstract

Current fasting guidelines allow oral intake of water up to 2 h before induction of anaesthesia. We assessed whether gum chewing affects gastric emptying of 250 ml water and residual gastric fluid volume measured 2 h after ingestion of water. This prospective randomized observer-blind crossover trial was performed on 20 healthy volunteers who attended two separate study sessions: Control and Chewing gum (chlorophyll flavour, with 2.1 g carbohydrate). Each session started with an ultrasound measurement of the antral area, followed by drinking 250 ml water. Then, volunteers either chewed a sugared gum for 45 min (Chewing gum) or did not (Control). Serial measurements of the antral area were performed during 120 min, and the half-time to gastric emptying (t½), total gastric emptying time, and gastric fluid volume before ingestion of water and 120 min later were calculated. Gastric emptying of water was not different between sessions; the mean (sdsd) t½ was 23 (10) min in the Control session and 21 (7) min in the Chewing gum session (P=0.52). There was no significant difference between sessions in gastric fluid volumes measured before ingestion of water and 120 min later. Chewing gum does not affect gastric emptying of water and do...Continue Reading

References

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Citations

Mar 9, 2019·Anaesthesia·F-P DesgrangesL Bouvet
Mar 9, 2019·Anaesthesia·W J Fawcett, M Thomas
Oct 2, 2019·Journal of Perioperative Practice·Mark Dorrance, Michael Copp
Jan 13, 2021·Physiological Measurement·Elisabeth K SteinsvikOdd Helge Gilja
Aug 18, 2021·Anesthesia and Analgesia·Khoa N Nguyen, Peter J Davis

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