What Is Endoscopic Sleeve Gastroplasty (ESG)?
Clinician's Perspective:
• Gastric Volume Reduction: The procedure utilizes an endoscope to reduce the stomach to a narrow tube, roughly 30% of its original capacity, without external surgical incisions.
• Weight Loss Efficacy: Clinical data indicates patients achieve an average weight loss of 15% of their total body weight within 12 to 24 months.
• Metabolic Resolution: The intervention shows significant efficacy in improving comorbid conditions, including Type 2 Diabetes and Hypertension (high blood pressure).
• While the procedure takes 60 to 90 minutes, the recovery period is rapid, with most individuals returning to occupational duties within 7 days.
• Procedural Reversibility: Unlike permanent surgical alterations, the internal sutures used in this method can be removed if clinically indicated.
• Nutritional Transition: Patients must adhere to a strict progression from a liquid diet to soft foods before returning to solid nutrition.
Endoscopic Sleeve Gastroplasty (ESG) represents a significant shift in the management of obesity. As a minimally invasive alternative to traditional bariatric surgery, ESG targets individuals with a BMI (Body Mass Index) of 27.5 or higher who have not achieved sustainable results through lifestyle modifications alone. It may be suitable for patients who are candidates for bariatric surgery but prefer non surgical approach.
Unlike Laparoscopic Sleeve Gastrectomy (a surgical weight loss procedure involving abdominal incisions), ESG requires no external cutting. Instead, a flexible endoscope is inserted through the mouth and down the esophagus to access the stomach. Using a specialized suturing device, the clinician places approximately 10 sutures between the gastric walls, drawing them together to create a narrow, sleeve-like architecture.
The physiological mechanism of weight loss in ESG is twofold. First, the reduction in gastric volume limits the quantity of food the stomach can hold. Second, the modified shape slows gastric emptying (the speed at which food leaves the stomach), which prolongs the sensation of satiety (the feeling of being full).
Clinical observations demonstrate that the procedure is relatively swift, typically concluded within 60 to 90 minutes under general anesthesia. While many patients are discharged on the same day, a subset may require an overnight stay for monitoring. Post-procedural side effects are generally confined to the first week, with common reports of mild pain and nausea, which are managed via standard medications..
Long-term success is dependent on the patient's transition through a structured dietary progression. The first month is dedicated to gastric healing, requiring a disciplined progression from liquids to soft foods. Data suggests that when paired with regular physical activity and nutritional support, weight regain is minimized, and the metabolic improvements—specifically regarding cholesterol levels, blood pressure, blood sugar control, and fatty liver disease—are sustained.
