Laparoscopic Sleeve Gastrectomy (commonly referred to as gastric sleeve surgery) is one of the most widely performed and effective weight loss procedures globally. This surgery involves permanently removing approximately 75% to 80% of the stomach along its greater curvature, leaving a narrow, banana-shaped "sleeve" or tube that connects the esophagus directly to the small intestine. Unlike complex gastric bypass operations, the intestinal tract remains entirely untouched, avoiding any rerouting of the intestines and minimizing the long-term risk of severe malabsorption. By significantly reducing stomach volume, this procedure physically limits food intake, enabling patients to feel full on small portions.
Sleeve Gastrectomy offers a profound physiological advantage that goes beyond simple portion control:
Hunger Hormone Reduction: The portion of the stomach that is removed (specifically the gastric fundus) is the main site responsible for producing Ghrelin—the hormone that signals hunger to the brain. By removing this section, Ghrelin levels drop significantly, substantially reducing hunger cravings and helping patients maintain consistent dietary discipline.
Metabolic Improvement: The rapid movement of food through the narrow sleeve triggers the early release of intestinal hormones (like GLP-1), which significantly improves insulin sensitivity and often leads to early resolution of Type 2 diabetes, even before substantial weight loss occurs.
Clinically severe obesity is a multifactorial disease driven by genetic predisposition, metabolic dysregulation, and environmental influences. When lifestyle modifications, diet, and exercise fail to yield lasting results, bariatric surgery serves as a powerful therapeutic tool. Sleeve Gastrectomy is highly effective at resolving severe obesity-related comorbidities, including Type 2 diabetes, hypertension, obstructive sleep apnea, hyperlipidemia, and joint degeneration. The procedure also significantly reduces the long-term risk of cardiovascular disease and obesity-linked malignancies.
A laparoscopic sleeve gastrectomy is performed under general anesthesia and typically takes 45 to 60 minutes. It uses advanced, minimally invasive techniques:
The surgeon makes 4 to 5 keyhole incisions (5-12 mm) in the upper abdomen. Carbon dioxide gas is gently introduced to expand the abdominal cavity, providing a clear, high-definition view via a specialized camera (laparoscope).
The blood vessels along the greater curvature of the stomach are carefully sealed and divided using advanced energy devices (ultrasonic shears), mobilizing the stomach from the adjacent spleen and pancreas.
A calibration tube (known as a bougie, typically 36 to 40 French in size) is inserted into the stomach to act as a guide. Utilizing state-of-the-art endoscopic staplers, the surgeon cuts and seals the stomach along the guide, forming a long, uniform sleeve.
A rigorous intraoperative leak test is performed using a colored dye to ensure the integrity of the staple line. The separated portion of the stomach is then extracted through one of the small incisions, and the keyholes are closed.
After surgery, patients typically stay in the hospital for 1 to 2 days. Early mobilization (walking within hours of surgery) is highly encouraged to promote circulation and prevent respiratory issues. As the newly created stomach sleeve heals, patients transition through structured dietary phases over several weeks.
Phase 1 (Weeks 1-2): Clear & Full Liquids
Patients consume only clear liquids (water, broth, coconut water) for the first few days, slowly progressing to thin, high-protein liquids. This ensures hydration while protecting the delicate staple line.
Phase 2 (Weeks 3-4): Pureed Foods
Diet transitions to smooth, blended, protein-rich foods (pureed chicken, eggs, blended lentils) with no solid pieces or chunks.
Phase 3 (Weeks 5-6): Soft Solids
Gradually introduces soft, easily mashable foods (flaky fish, well-cooked vegetables, soft cheese), training the stomach sleeve to handle textures.
Phase 4 (Week 7+): Healthy Solid Foods
Regular solid foods are carefully reintroduced. Portion sizes remain small (typically 100-150g per meal), emphasizing high-protein intake and avoiding carbonated drinks, high-sugar liquids, and tough fibrous foods.
Excess Weight Loss (EWL): Patients typically lose 60% to 70% of their excess body weight within the first 12 to 18 months following surgery, provided they adhere to recommended dietary and lifestyle changes.
Comorbidity Resolution: Clinical studies demonstrate outstanding long-term resolution or significant improvement rates for major obesity-related conditions:
• Type 2 Diabetes: ~70-80% resolution/improvement
• Hypertension: ~60-70% resolution/improvement
• Obstructive Sleep Apnea: ~80-90% resolution
• Fatty Liver Disease (NASH): Significant reversal of hepatic steatosis.
Daily Supplementation: Because of the reduced stomach size, patients must take daily high-quality multivitamin, calcium, and vitamin B12 supplements to maintain optimal long-term nutritional health.
Achieving a safe and successful outcome from gastric sleeve surgery relies on several clinical and lifestyle parameters:
Staple Line Safety and Leak Prevention:
The most critical technical aspect of a sleeve gastrectomy is the integrity of the staple line. Using premium, medical-grade stapling systems and completing meticulous intraoperative leak checks are paramount. Dr. Prabhu Nesargikar uses top-tier surgical equipment and safety protocols to minimize the risk of complications.
Behavioral and Lifestyle Adaptation:
Bariatric surgery is a powerful tool, not a passive cure. Long-term weight maintenance requires a permanent change in eating habits, practicing mindful eating (chewing thoroughly, eating slowly), avoiding "slider" foods (high-calorie liquids/soft sweets that pass quickly through the sleeve), and maintaining regular physical exercise.
Comprehensive Multidisciplinary Support:
The journey to optimal health extends far beyond the operating room. Regular, structured follow-ups with our bariatric dieticians, endocrinologists, and support groups ensure that any nutritional, metabolic, or psychological adjustments are managed smoothly and proactively.