Gastroparesis Doctor In St. Petersburg, FL

No single test diagnoses gastroparesis and confirms you are a surgical candidate. Each test answers one question, and skipping any of them is how patients end up with the wrong procedure.

The gastric emptying study is the gold standard. You eat a light meal containing a small amount of tracer, usually eggs and toast, and a scanner tracks how fast it leaves your stomach over four hours. This is the test that objectively proves delayed emptying rather than assuming it from symptoms. Current guidelines define abnormal as more than 10% of the meal still in the stomach at four hours, and they suggest the patients most likely to benefit from G-POEM have retention above 20% at four hours.

Upper endoscopy is not a gastroparesis test, but it is necessary. It rules out a mechanical blockage that would explain the same symptoms, and it checks the anatomy. One useful clue: if food is still present in the stomach during an endoscopy you fasted for, that points toward delayed emptying on its own.

Esophageal manometry checks whether the esophagus is moving normally, because gastroparesis-like symptoms can come from a motility disorder that surgery would not fix. When reflux symptoms coexist, pH or impedance testing measures whether reflux is actually occurring and how often.

Dr. Grandhige correlates all four against your specific symptoms before deciding anything. The point is not to run more tests. It is to confirm that delayed emptying, and not something masquerading as it, is the real problem, so the treatment matches the cause.

G-POEM, also called POP (per-oral pyloromyotomy), is a minimally invasive procedure that improves gastric emptying by targeting the pylorus, the muscular valve between the stomach and small intestine. In gastroparesis the pylorus often fails to relax, creating resistance that traps food in the stomach. G-POEM releases that resistance from the inside.

Under general anesthesia, a flexible endoscope passes through the mouth into the stomach. The surgeon creates a small tunnel in the stomach lining and divides the pyloric muscle to reduce resistance and improve emptying. Because everything happens internally, there are no abdominal incisions and no external scars, and recovery is generally faster than open surgery. Dr. Grandhige is one of only a handful of surgeons performing it in Tampa Bay. The same endoscopic philosophy runs through other procedures in the practice, including TIF for reflux.

Here is the honest part most pages skip. G-POEM works, but not for everyone, and not forever in every case. Across the published literature, the procedure is technically completed in essentially all cases, and roughly 70 to 80% of carefully selected patients see meaningful symptom improvement within the first year. A meta-analysis of 952 patients found about 72% clinical success at one year, with benefits that can last up to three years. The trade-off: there is a recurrence rate of around 13% or more per year, and a serious complication rate near 8%. Longer duration of illness before treatment is linked to poorer outcomes.

Those numbers are exactly why selection is strict. The success rate quoted in studies reflects patients chosen as carefully as the three gates above demand. Loosen the selection and the results fall. This is also why Dr. Grandhige sets specific expectations during your consultation, telling you which of your symptoms are likely to improve and which may persist, rather than promising a cure.

Most patients go home the same day or after a brief overnight observation. Recovery centers on a structured diet progression over several weeks, moving from liquids to soft foods to regular textures as the treated area heals.

Symptom relief varies with disease severity and underlying cause. Well-selected patients often report meaningful improvement in nausea, bloating, and early fullness, along with better quality of life. The point of the careful workup beforehand is that, by the time you reach the procedure, your expectations already match what the operation can realistically deliver.

If gastroparesis has stalled on medication and diet, you do not have to accept that as the end of the road, and you do not have to leave the Tampa Bay area to find out what comes next. A thorough evaluation tells you whether delayed emptying is genuinely the problem, what is driving it, and whether a procedure like G-POEM would realistically help, before you commit to anything.

Whether you are newly diagnosed, stuck after months of frustration, or want a second opinion on testing you have already had, Tampa Bay Reflux Institute offers a short drive from St. Pete and a straight answer. Schedule your consultation today or call 813.922.2920.