What can you do to stop outward swelling of the stomach due to pre pryloric intestinal condition?

Stomach problem. The pylorus is the end of stomach connecting to the beginning of the small intestine, so a "pre-pyloric" problem of the gut can only involve the stomach or esophagus. Is this the location you're questioning? If so, you're describing a gastric emptying issue with associated stomach distension--either due to partial obstruction or a sluggish stomach. Get evaluation & appropriate treatment please.