Gastric electrical stimulation
electrical stimulation of the stomach to try to bring about weight loss or for other medical purposes
Gastric electrical stimulation, also known as implantable gastric stimulation, is the use of specific devices to provide electrical stimulation to the stomach to try to bring about weight loss in those who are overweight or improve gastroparesis.
Gastric electrical stimulation is a pacemaker-like device with electrical connections to the surface of the stomach. The device works by disrupting of the motility cycle or stimulating enteric nervous system. There are a number of different devices on the market including Transend, Maestro, and Diamond.
Medical uses
These devices are for treatment of gastroparesis. The best available evidence, however, find that they are of questionable utility for this condition.
As of 2017 it is not approved for use for obesity in the United States. The first studies done did not find a benefit, however, research is ongoing.
Mechanism of action
Once food leaves the stomach and enters the duodenum, the gut-brain-liver axis is activated, which involves signaling between the gastrointestinal tract and the nervous system. For patients without type 2 diabetes, the gastric transit time of food is estimated to be 30–45 minutes (the time from food ingestion to food leaving the stomach into the duodenum).
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