Gastroparesis Surgery and Procedures

Gastroparesis surgery is rarely the first treatment. It is considered when symptoms remain severe after diet changes, blood sugar control, and medication have been tried. When that point is reached, several procedures can help, from an endoscopic cut in the muscle at the stomach outlet to an implanted device that eases nausea and vomiting.

When is gastroparesis surgery considered?

Treatment is built in steps. According to the National Institute of Diabetes and Digestive and Kidney Diseases, changing eating habits usually comes first, with medication added when diet is not enough. Procedures and surgery are reserved for the smaller group of people whose symptoms stay severe despite these measures, a situation doctors call medically refractory gastroparesis. The aim is to relieve ongoing nausea, vomiting, and weight loss, or to support nutrition when eating by mouth is no longer enough. A gastroenterologist, and often a surgeon, evaluates whether a procedure is appropriate. Our guide to gastroparesis treatment shows where these steps fit in the wider plan.

What is G-POEM, or endoscopic pyloromyotomy?

G-POEM stands for gastric per-oral endoscopic myotomy. A doctor passes a flexible endoscope through the mouth, with no external incision, and cuts the pylorus, the ring of muscle at the stomach outlet, so the stomach can drain more easily. In a randomized, sham-controlled trial, treatment succeeded in about 71 percent of people who had G-POEM, compared with about 22 percent who had a sham procedure, measured at six months.

Even so, the American Gastroenterological Association's 2025 guideline suggests against routine use, because the highest-quality evidence remains limited. The guideline does suggest offering G-POEM to carefully selected people whose stomach still holds more than 20 percent of a meal at four hours on a gastric emptying study, since that group is the most likely to benefit.

Is surgical pyloroplasty an option?

A surgeon can also open or cut the pylorus through an operation, an approach called pyloroplasty or surgical pyloromyotomy. The goal is the same as G-POEM, to ease the flow of food out of the stomach, but it is done surgically rather than through an endoscope. The American Gastroenterological Association's 2025 guideline makes no recommendation for or against these surgical pyloric procedures, because the evidence comes only from observational studies rather than controlled trials. They are weighed case by case, usually at centers experienced in treating gastroparesis.

What is gastric electrical stimulation, or the Enterra device?

Gastric electrical stimulation uses a small, battery-powered device, implanted during surgery, that sends mild electrical pulses to the lower stomach. The system used in the United States, called Enterra, was cleared by the Food and Drug Administration in 2000 under a Humanitarian Device Exemption, a pathway reserved for devices that treat uncommon conditions. It is indicated for chronic, drug-resistant nausea and vomiting caused by gastroparesis from diabetes or from an unknown cause, known as idiopathic gastroparesis, in people aged 18 to 70.

The American Gastroenterological Association's 2025 guideline suggests against routine use, noting that controlled trials comparing the device switched on and off did not show benefit that reached the threshold for clinical importance, and that serious complications occurred in about 7 percent of patients. The guideline reserves the device for select people with refractory disease, particularly those whose main problem is nausea and vomiting.

What procedures support nutrition in severe gastroparesis?

When a person cannot take in enough food or fluid by mouth, other procedures support the body while treatment continues. According to the National Institute of Diabetes and Digestive and Kidney Diseases, a feeding tube placed into the small intestine, called a jejunostomy, delivers nutrients past the slow stomach. A venting tube can relieve pressure and trapped air in the stomach. In some cases, liquid nutrition is given directly into a vein, known as parenteral nutrition. These steps are reserved for the most severe cases, and they are usually meant to be temporary supports rather than permanent solutions.

How is the right procedure chosen?

No single procedure suits everyone. The American Gastroenterological Association's 2025 guideline stresses careful patient selection and shared decisions made between a person and a multidisciplinary team. The diagnosis is confirmed first, usually with a gastric emptying study, and other causes of the symptoms are ruled out before any procedure is planned. Our page on how gastroparesis is diagnosed explains those tests, and the diet and medication steps that come first are covered on our gastroparesis medications page.

Sources

Reviewed by Owen Hastings.

• NIDDK (National Institute of Diabetes and Digestive and Kidney Diseases), Treatment for Gastroparesis (niddk.nih.gov), last reviewed January 2018, for the stepwise approach, gastric electrical stimulation, the jejunostomy feeding tube, venting, and parenteral nutrition.
• American Gastroenterological Association, Clinical Practice Guideline on Gastroparesis (gastro.org), published September 2025, for the conditional recommendations against routine G-POEM and routine gastric electrical stimulation, the absence of a recommendation on surgical pyloric interventions, the selection of people with more than 20 percent gastric retention at four hours, the multidisciplinary and shared-decision approach, and the roughly 7 percent rate of serious adverse events with gastric electrical stimulation.
• For the randomized, sham-controlled G-POEM figures (about 71 percent versus 22 percent at six months), the randomized, sham-controlled trial of endoscopic pyloromyotomy by Martinek and colleagues (pubmed.ncbi.nlm.nih.gov).
• U.S. Food and Drug Administration (fda.gov), for the Enterra Therapy System Humanitarian Device Exemption (cleared in 2000), its indication for chronic, drug-resistant nausea and vomiting from diabetic or idiopathic gastroparesis, and the age range of 18 to 70.

This page is general health information, not medical advice. Talk to your doctor or gastroenterologist about your own care. Last reviewed June 2026.