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Influence of semaglutide use on the presence of residual gastric solids on gastric ultrasound: a prospective observational study in volunteers without obesity recently started on semaglutide

Influence de l’utilisation du sémaglutide sur la présence de solides gastriques résiduels à l’échographie gastrique : une étude observationnelle prospective auprès de volontaires sans obésité ayant récemment commencé à prendre du sémaglutide

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Abstract

Purpose

Glucagon-like peptide-1 (GLP-1) receptor agonists (GLP-1RAs) have become increasingly popular as both diabetic and weight loss therapies. One effect of this class of medication is delayed gastric emptying, which may impact the risk of aspiration during anesthesia delivery.

Methods

In this prospective study, we used gastric ultrasound to evaluate the presence of solid gastric contents in both supine and lateral positions after an eight-hour fast in those taking GLP-1RA compared with controls. Participants underwent a second ultrasound evaluation two hours later after drinking 12 fluid ounces of water (approximately 350 mL).

Results

Twenty adults voluntarily enrolled, giving a total of ten participants in each group. In the supine position, 70% of semaglutide participants and 10% of control participants had solids present on gastric ultrasound (risk ratio [RR], 3.50; 95% confidence interval [CI], 1.26 to 9.65; P = 0.02.) In the lateral position, 90% of semaglutide participants and 20% of control participants had solids identified on gastric ultrasound (RR, 7.36; 95% CI, 1.13 to 47.7; P = 0.005). Two hours after drinking clear liquids, the two groups did not differ in the lateral position, but in the supine position, 90% of control group participants were rated as empty compared with only 30% of semaglutide group participants (P = 0.02).

Conclusions

This study provides preliminary evidence that GLP-1RAs may affect gastric emptying and residual gastric contents following an overnight fast and two hours after clear liquids, which may have implications for aspiration risk during anesthetic care.

Résumé

Objectif

Les agonistes des récepteurs du peptide-1 de type glucagon (GLP-1) (AR-GLP-1) sont de plus en plus populaires comme traitements du diabète et pour la perte de poids. L’un des effets de cette classe de médicaments est le retard de la vidange gastrique, ce qui peut avoir un impact sur le risque d’aspiration pendant l’administration de l’anesthésie.

Méthode

Dans cette étude prospective, nous avons utilisé l’échographie gastrique pour évaluer la présence de contenu gastrique solide en décubitus dorsal et latéral après un jeûne de huit heures chez les personnes prenant des AR-GLP-1 par rapport à un groupe témoin. Les participant·es ont passé une deuxième échographie deux heures plus tard, après avoir bu 12 onces liquides d’eau (environ 350 mL).

Résultats

Vingt personnes adultes se sont inscrites volontairement, soit un total de dix participant·es dans chaque groupe. En décubitus dorsal, 70 % des personnes du groupe sémaglutide et 10 % des personnes du groupe témoin présentaient des solides à l’échographie gastrique (risque relatif [RR], 3,50; intervalle de confiance [IC] à 95 %, 1,26 à 9,65; P = 0,02). En décubitus latéral, 90 % des personnes du groupe sémaglutide et 20 % des personnes du groupe témoin présentaient des solides à l’échographie gastrique (RR, 7,36; IC 95 %, 1,13 à 47,7; P = 0,005). Deux heures après avoir bu des liquides clairs, le contenu gastrique évalué ne différait pas entre les deux groupes en position latérale, mais en décubitus dorsal, l’estomac de 90 % des participant·es du groupe témoin a été jugé vide, comparativement à seulement 30 % chez les participant·es du groupe sémaglutide (P = 0,02).

Conclusion

Cette étude procure des données préliminaires selon lesquelles les AR-GLP-1 pourraient affecter la vidange gastrique et le contenu gastrique résiduel après un jeûne d’une nuit et deux heures après l’ingestion de liquides clairs, ce qui pourrait avoir des implications quant au risque d’aspiration pendant les soins anesthésiques.

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Author contributions

Marc Sherwin contributed to study design and data analysis, patient recruitment, data collection, and article drafts and finalization. Joshua Hamburger contributed to study design, patient recruitment, data collection, and article drafts and finalization. Daniel Katz and Samuel DeMaria, Jr contributed to study design and data analysis, data collection and interpretation, and article drafts and finalization.

Disclosures

None of the authors report relevant conflicts.

Funding statement

No external funding was received to conduct this study.

Editorial responsibility

This submission was handled by Dr. Philip M. Jones, Deputy Editor-in-Chief, Canadian Journal of Anesthesia/Journal canadien d’anesthésie.

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Authors and Affiliations

  1. Department of Anesthesiology, Perioperative and Pain Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L., Levy Place, Box 1010, New York, NY, 10029, USA

    Marc Sherwin MD, Joshua Hamburger MD, Daniel Katz MD & Samuel DeMaria Jr. MD

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  1. Marc Sherwin MD
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Sherwin, M., Hamburger, J., Katz, D. et al. Influence of semaglutide use on the presence of residual gastric solids on gastric ultrasound: a prospective observational study in volunteers without obesity recently started on semaglutide. Can J Anesth/J Can Anesth 70, 1300–1306 (2023). https://doi.org/10.1007/s12630-023-02549-5

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