Implanted Closed-Loop Gastric Electrical Stimulation (CLGES) System with Sensor-Based Feedback Safely Limits Weight...

Area of Science:

• Bariatric Surgery and Obesity Management
• Biomedical Engineering
• Medical Devices

Background:

• Weight regain is a significant challenge after bariatric surgery.
• Closed-loop gastric electrical stimulation (CLGES) offers a novel approach to weight loss.
• CLGES systems feature continuous monitoring of eating and activity behaviors via onboard sensors.

Purpose of the Study:

• To evaluate the long-term (24-month) efficacy and safety of CLGES in managing weight regain post-bariatric surgery.
• To assess the impact of CLGES on quality of life and cardiovascular risk factors.
• To explore the potential of CLGES combined with sensor-based behavioral data for sustained weight maintenance.

Main Methods:

• A 12-month prospective, multicenter randomized study involving 47 participants with laparoscopic CLGES implantation.
• Continuous monitoring of participants up to 24 months post-implantation.
• Analysis of weight loss, safety, quality of life (QOL), and cardiac risk factors.

Main Results:

• Weight regain was limited in 74% of participants remaining at 24 months, with minimal change in %TBWL between 12 and 24 months.
• The primary serious adverse events were two system replacements due to lead failure within the first year.
• Improvements in QOL and cardiovascular risk factors remained stable throughout the 24-month follow-up period.

Conclusions:

• CLGES demonstrated a strong safety profile, limiting weight regain with no serious adverse events in the second year of follow-up.
• The combination of CLGES and objective sensor data may drive behavior change for improved weight management.
• The study supports CLGES as a safe and effective obesity treatment with potential for long-term health benefits.