The Effect of Carbohydrate Loading 2 Hours Before Gastroscopy on Gastric Residual Volume and Patient's Well-being Score

This is a single-blind randomized controlled trial with a stratified (diabetes mellitus, non-diabetes mellitus), balanced randomization (1:1), placebo-controlled study regarding the effect of carbohydrate loading 2 hours prior to the outpatient upper endoscopic procedure. All patients who were assigned for outpatient oesophagogastroduodenoscopy (OGDS) were invited to join in this study voluntarily from January 2021 until August 2021. This study was conducted in the Endoscopy Unit, Hospital Universiti Sains Malaysia, Kubang Kerian, Malaysia. The endoscopists that performed this procedure were blinded and there was trained staff who was not involved in the study to assess the well-being score. The study protocol had been approved by the Human Research Ethics Committee of Universiti Sains Malaysia (JEPeM) with the assigned protocol code USM/JEPeM/20080414.