The safety of preoperative carbohydrate drinks in extremely elderly patients assessed by gastric ultrasonography: a randomized controlled trial.

"Declarations Ethics approval and consent to participateThis study was approved by the Ethics Review Committee of Taizhou Hospital (K20190752), Zhejiang Province. All procedures performed in this study involving human participants were in accordance with the Ethical Standards of the Institutional Ethics Committee and with the 1964 Helsinki Declaration. Informed consents were signed by all patients or their close kins before their participation. Consent for publicationConsent for publication Informed consent for information collection for research was obtained from all participants and the hospital review board provided us with consent for publication. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This work was supported by The Health Science and Technology Project of Zhejiang Province. (Lingyang Chen 2024KY525; Mingcang Wang 2024KY521)"

"Trial registration Chinese Clinical Trial Registry (Registration Number ChiCTR1900024812), first registered on 29/07/2019."