Gastric Electrical Stimulation (GES) and Pyloroplasty for the Treatment of Gastroparesis

Implantable GES System will be turned ON as an active intervention providing electrical stimulation to the muscle of stomach for 6 months in patients from the first arm, versus 3 months only of active stimulation in patients who are randomized to be in the second arm of the study. GES works by utilizing following parameters: Current 5 mA; Pulse Width 330µsec; Rate 14 Hz; Time ON 0.1 sec; Time OFF 5.0 sec.