Medical Review

Bariatric Surgery Medical Review Board

Meva Clinic · Istanbul

Published: 2025-11-12

Last Updated: 2026-06-28

Gastric Sleeve (Sleeve Gastrectomy)

A widely performed procedure for weight management. Laparoscopic sleeve gastrectomy involves removing a significant portion of the stomach to help regulate appetite and support metabolic changes, typically planned after a medical assessment.

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Bariatric Surgery Medical Review Board

Clinical Review

Clinical Governance & Bariatric Safety Standards

"Sleeve gastrectomy is a powerful tool to reset your metabolism, but it is not a shortcut. Long-term weight stability and metabolic health require a lifetime commitment to healthy eating, structural exercise, hydration, and nutritional follow-up support."

This page has been reviewed under Meva Clinic’s specialist medical review pathway. Final treatment suitability, operating physician assignment, surgical planning, and medical decisions are confirmed only after medical history review, in-person consultation, diagnostic tests, anesthesia evaluation, and doctor availability.

About This Procedure

Why Choose Meva Clinic?

Our coordination pathways for a gastric sleeve in Turkey (Istanbul) focus on clinical care and patient safety. For patients where bariatric surgery in Istanbul is determined to be appropriate, laparoscopic sleeve gastrectomy is performed using minimally invasive techniques in a hospital setting. Depending on medical assessment, alternative options like gastric bypass surgery in Istanbul or a non-surgical endoscopic weight management option may also be discussed. The process involves a pre-operative bariatric surgery consultation, including a BMI assessment, physical checks, and a face-to-face anesthesia evaluation. International patient coordination services help manage logistics such as airport transfers, partner hotel planning, and guide support. Final approval is only confirmed after in-person tests and medical evaluations in Istanbul, followed by structured post-operative nutrition guidance and follow-up planning.

Clinical Review

Bariatric Surgery Medical Review Board

Clinical Governance & Bariatric Safety Standards

Standardized Laparoscopic Bariatric Surgery & Stomach Reduction Pathways

Is This Treatment for Me?

BMI > 35

Weight-related health issues

Ready for lifestyle change

Comprehensive International Patient Care Plan

Private Airport Transfer Support

Istanbul Hotel Planning Coordination

Hospital-Based Surgical Planning

Post-Operative Nutrition Guidance

Transparent Pre-Travel Medical Assessment

The Clinical Procedure

Laparoscopic sleeve gastrectomy involving stomach volume reduction.

Access & Anesthesia

Performed under general anesthesia. Minimally invasive laparoscopic incisions (5-12mm) are created to insert the camera and specialized surgical instruments.

Gastric Mobilization

The blood vessels and tissue attachments along the greater curvature of the stomach are carefully mobilized using advanced energy devices from the pylorus to the junction of the esophagus.

Sleeve Resection & Volume Reduction

A calibration tube (bougie, 36F-40F) is inserted to guide the shape. A surgical linear stapler resects a significant portion of the stomach, leaving a narrow, sleeve-like tube to achieve stomach volume reduction.

Leak Verification

The surgical team performs an intraoperative leak test (using dye or air insufflation) to inspect the staple line integrity and verify complete hemostasis.

Closure & Extraction

The resected stomach portion is extracted, laparoscopic port sites are closed using absorbable sutures, and local anesthetic is applied to the incision sites for early pain control.

Recovery & Transformation Journey

Early Hospital Stay

A short hospital stay in a partner hospital setting for close monitoring, early mobilization, pain management, and clear-liquid introduction.

Days 3-5 (Hotel Recovery)

Transition to partner hotel recovery accommodations in Istanbul. Progress to full liquids (strained soups, protein shakes) and light walking.

Weeks 2-4 (Soft Foods)

Return home with structured coordination support. Transition to pureed and soft foods (eggs, mashed vegetables, fish). Avoid carbonation and drinking liquids with meals.

Months 2-12 (Lifestyle Integration)

Gradual transition to small, structured solid meals focusing on lean proteins. Ongoing support with our post-operative nutrition and dietitian follow-up program.

The Meva Advantage

Advanced surgical stapling techniques and post-operative nutrition guidance.

HighSafety Standard

15+ Years Experience

PremiumClinical Care Standard

Clinical Standards & Safety

Medical Guidelines & Safety Protocols

Hospital-based bariatric procedures are coordinated through case-specific partner hospital settings, with structured medical assessment, pre-operative surgeon consultation, in-person anesthesia evaluation, and post-operative nutrition and follow-up planning. Below are the clinical guidelines, safety protocols, and medical reference documentation for this procedure.

Indicated / Suitable For

Individuals exploring options for a gastric sleeve in Turkey, typically with a Body Mass Index (BMI) of 40 or higher, or a BMI of 35 or higher when accompanied by obesity-related comorbidities.
Candidates who have struggled to achieve sustainable weight reduction through medically supervised diet, exercise, and lifestyle changes.
International patients seeking structured travel planning and professional coordination for weight loss surgery in Istanbul.
Individuals who may be suitable for a laparoscopic sleeve gastrectomy (laparoscopic gastric sleeve) as a primary surgical intervention for weight management, subject to comprehensive medical assessment.
Patients showing readiness and commitment to long-term post-operative nutrition guidance, lifestyle changes, and clinical follow-up planning.

Contraindications / Not Suitable

Untreated psychiatric conditions or active substance dependence that could compromise adherence to long-term post-operative guidelines.
Portal hypertension with gastric varices, untreated coagulopathy, or advanced cardiopulmonary disease that increases general anesthesia risks.
Active gastrointestinal bleeding, severe untreated esophagitis, or Barrett's esophagus where an alternative bariatric procedure may be clinically preferred.
Pregnancy, or planning to conceive within 12 to 18 months following surgery during the rapid weight loss phase.
Unwillingness or inability to commit to daily nutritional supplementation, progressive diet stages, and regular clinical monitoring.

Pre-Operative Evaluation & Diagnostic Checks

Bariatric Surgery Consultation: A detailed medical history review, lifestyle assessment, and hospital-based surgical planning.

Pre-Operative Laboratory Profile: Comprehensive blood tests (complete blood count, metabolic panel, liver and kidney function, thyroid profile, HbA1c, lipid panel, and baseline vitamin screenings).

Anesthesia & General Fitness: Electrocardiogram (ECG), chest X-ray, and pulmonary function reviews to evaluate general anesthesia tolerance.

Gastrointestinal Diagnostics: Upper endoscopy (EGD) where indicated to assess the stomach lining, screen for hiatal hernias, and test for H. pylori.

Multidisciplinary Assessment: Clearances and evaluations from cardiology, pulmonology, endocrinology, and anesthesiology before final surgical approval is granted.

Potential Risks & Complications

In compliance with transparent clinical reporting, Meva Clinic ensures patients are fully informed of the physiological risks associated with surgical procedures through accredited partner-hospital safety protocols where clinically appropriate.

Staple Line Leak

Gastric fluid leakage from the resection line into the abdominal cavity; mitigated by intraoperative leak testing and managed via endoscopic stents or surgical intervention.

Post-Operative Bleeding

Hemorrhage along the stapled edge of the stomach; monitored closely in the hospital and managed surgically or conservatively as required.

Gastric Sleeve Stricture

Narrowing or twisting of the newly formed stomach sleeve due to scar tissue, typically resolved with endoscopic balloon dilation.

Nutritional & Vitamin Deficiencies

Reduced absorption of iron, calcium, folate, and vitamins (B12, D); prevented and managed through lifelong structured daily supplementation.

Gastroesophageal Reflux (GERD)

New-onset or worsened acid reflux due to anatomical alterations and increased pressure within the narrow stomach sleeve.

Thromboembolic Events

Deep vein thrombosis (DVT) or pulmonary embolism; mitigated via sequential compression devices, early post-operative mobilization, and anticoagulant therapy.

Realistic Expectations & Outcomes

Weight-loss outcomes vary by patient and depend on medical suitability, nutrition, follow-up, and long-term lifestyle change. No specific amount of weight loss or health outcome can be guaranteed.

Revision & Follow-Up Policy

In cases of insufficient weight loss, severe reflux, or structural complications, a comprehensive diagnostic workup is performed. Revisional procedures (such as conversion to a gastric bypass) may be considered after multidisciplinary bariatric board review and personalized evaluation.

Authoritative Medical References & Studies

[1]
American Society for Metabolic and Bariatric Surgery (ASMBS) and International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO): Joint Consensus Statement on Indications for Bariatric Surgery (2022).View Study
[2]
National Institutes of Health (NIH) Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults.View Source
[3]
The Lancet Diabetes & Endocrinology: 'Long-term metabolic and weight-loss outcomes of sleeve gastrectomy versus Roux-en-Y gastric bypass' (By-Band-Sleeve Trial, 2025).View Study

Medical Disclaimer: The medical information on this page is for educational purposes only. Final eligibility, treatment planning, and surgical decisions are made exclusively after clinical assessment, blood tests, and face-to-face evaluations by the bariatric team.

Frequently Asked Questions

Generally, candidates are individuals with a BMI of 40 or higher, or a BMI of 35 or higher with obesity-related health concerns. All candidates undergo a thorough medical assessment for gastric sleeve, including comprehensive blood tests, cardiovascular checks, and nutritional reviews, to determine if bariatric surgery is appropriate.

Our Istanbul bariatric surgery coordination includes remote medical document review, pre-operative testing (blood panels, cardiology, upper endoscopy), in-person surgeon consultation, a laparoscopic gastric sleeve procedure with an expected hospital stay, hotel recovery, and airport transfer coordination before return-home planning.

Potential risks include staple-line leak, bleeding, stricture (narrowing of the stomach), gastroesophageal reflux (GERD), and long-term nutritional deficiencies. These risks are minimized through advanced surgical techniques (like stapling), intraoperative leak verification, and comprehensive post-operative guidance.

The diet progresses from clear liquids (first week) to full liquids (second week), followed by pureed and soft foods (weeks 3-4), before transitioning to small, structured solid meals. Patients must focus on high protein, avoid drinking liquids with meals, and take daily vitamin supplements.

Yes, regular follow-up is critical. Our coordination programs include structured post-operative nutrition guidance. Continued medical checks and annual blood panels are recommended to prevent vitamin deficiencies and support weight maintenance.

Weight-loss outcomes vary by patient and depend on medical suitability, nutrition, follow-up, and long-term lifestyle change. No specific amount of weight loss or health outcome can be guaranteed.

Our coordination services assist with private airport transfer support, partner hotel planning in Istanbul, and bilingual medical interpreter support for appointments and clinical assessments, ensuring a smooth care journey.

A transparent medical assessment is required before final approval. Medical history and documents are reviewed remotely by our bariatric team first. However, final confirmation is only given after pre-operative tests, a physical evaluation, and a face-to-face anesthesia evaluation at our partner hospital in Istanbul.