Gastric outlet obstruction Symptoms: non-bilious vomiting abdominal pain and nausea Signs: abdominal distention and bleeding from secondary inflammation Most common cause of non-bilious vomiting is infantile hypertrophic pyloric stenosis(IHPs) Similar symptoms including pyloric atresia, antral webs gastric duplications and gastric volvulusGastric outlet obstruction ◼ Symptoms: non-bilious vomiting, abdominal pain and nausea ◼ Signs: abdominal distention and bleeding from secondary inflammation ◼ Most common cause of non-bilious vomiting is infantile hypertrophic pyloric stenosis (IHPS) ◼ Similar symptoms including pyloric atresia, antral webs, gastric duplications, and gastric volvulus