Refractory gastroparesis is a disease characterized by a delayed gastric emptying without a mechanical obstruction. Actual treatments have a limited efficacy and gastric per-oral endoscopic myotomy (G-POEM) is a new treatment that has demonstrated initial promising results in these patients. The investigators aims are to evaluate security and efficacy of this endoscopic treatment in participants with refractory gastroparesis.
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Efficacy of G-POEM in gastroparesis in percentage of scintigraphic improvement at 4hrs
Timeframe: 1, 6 and 12 months