Idiopathic gastroparesis

This study aims to collect medical data and biological samples (blood, urine, stool, and tissue) from up to 4,000 adults with known or suspected gastrointestinal diseases. Participants receive standard medical care at the NIH, and any extra samples or leftover tissue from procedu…

This study looks at people with gastroparesis (slow stomach emptying) who have a gastric electrical stimulator (GES) implanted. Researchers will turn off the device for up to four hours to see how it changes insulin and other hormone levels. The goal is to understand the device's…

This study is creating a registry of 250 people with symptoms of gastroparesis or functional dyspepsia, such as nausea, vomiting, and abdominal pain. Participants will fill out questionnaires, take a nutrient drink test, and have a gastric emptying scan. The goal is to collect da…

This study aims to find out if people with gastroparesis (stomach paralysis) have abnormalities in the pyloric sphincter, the valve between the stomach and small intestine. Researchers will use special imaging tools to measure how flexible and open this valve is. The study will e…