S980 Point of Care Gastric Ultrasound for Predicting Residual Gastric Content and Risk of Aspiration in Ambulatory Patients for Advanced Endoscopy Procedures. (October 2021) - Venkata, Krishna; Kalagara, Hari; Ahmed, Ali; Pierce, Albert; Kaehler, Roth; Mitchell, Rachel; Harrison, Devin; Baig, Kondal; Peter, Shajan