\section*{on 6 of 10} Which test would the nurse anticipate being performed to determine lower esophageal sphincter (LES) competence? \( \bigcirc \) Exploratory laparotomy \( \bigcirc \) Chest radiography \( \bigcirc \) Magnetic resonance imaging (MRI) \( \bigcirc \) Upper gastrointestinal (GI) endoscopy NOT SURE CONFIDENT
