Gastric Electrical Stimulation Improves Outcomes of Patients With Gastroparesis for up to 10 Years

BACKGROUND & AIMS: We assessed the long-term clinical outcomes of gastric electrical stimulation (GES) therapy with Enterra (Enterra Therapy System; Medtronic, Minneapolis, MN) in a large cohort of patients with severe gastroparesis. METHODS: Gastroparesis patients (n = 221; 142 diabetic, 48 idiopathic, and 31 postsurgical) treated with Enterra (Medtronic) for 1-11 years were retrospectively assessed; 188 had follow-up visits and data were collected for at least 1 year (mean 56 months, range 12-131 months). Total symptom scores (TSSs), gastric emptying, nutritional status, weight, hospitalizations, use of prokinetic and/or antiemetic medications, levels of HbA1c levels (in diabetic patients), and adverse events were evaluated at the beginning of the study (baseline) and during the follow-up period. RESULTS: TSS, hospitalization days, and use of medications were significantly reduced among all patients (P < .05). More patients with diabetic (58%) and postsurgical gastroparesis (53%) had a greater than 50% reduction in TSS than those with idiopathic disease (48%; P = .32). Weight significantly increased among all groups, and 89% of J-tubes could be removed. At end of the follow-up period, all etiological groups had similar, abnormal delays in mean gastric retention. Thirteen patients (7%) had their devices removed because of infection at the pulse generator site. CONCLUSIONS: GES therapy significantly improved subjective and objective parameters in patients with severe gastroparesis; efficacy was sustained for up to 10 years and was accompanied by good safety and tolerance profiles. Patients with diabetic or postsurgical gastroparesis benefited more than those with idiopathic disease.