Gastric Sleeve vs. Mini Gastric Bypass
Differences in Candidates, Results, Recovery Time, Side-Effects and Costs

ProcedureGastric SleeveMini Gastric Bypass
AKAVertical Sleeve GastrectomyMGB
Price in Mexico$5,900$5,500
Average Price in US$19,000$16,000
Savings Compared to US$13,100$10,500
Diagram
Method of Weight LossRestrictive: Reduces stomach size and hunger hormone (ghrelin) releaseMalabsorptive: Reduces stomach size and limits food absorption
Stomach AlterationsStomach size reducedStomach size reduced
Impact70–85% of stomach removed90% of stomach removed
Changes to IntestineNo changeYes
Operating time1–3 hours1.5 hours
Average Hospital Stay2 nights3 nights
Time off Work2 weeks3–5 weeks
Recovery Time3 weeks3 weeks
Pros
  • No intestinal changes: Fewer complications and side effects, such as dumping syndrome
  • Hunger depressed because of reduction in ghrelin production
  • Lifetime approach to obesity
  • Simple procedure
  • Lower complication rate compared to a traditional RNY surgery, such as dumping syndrome.
  • Less re-routing of the intestines.
  • Can be reversible and revised easily.
Cons
  • Newer surgery with long-term results somewhat unknown
  • Stomach could enlarge
  • Requires more nutritional supplements and vitamins (not as much as gastric bypass)
  • Hair loss is also somewhat common during the first 3 to 6 months after surgery.
  • May experience gallstones from the rapid weight loss.
Surgery Description
  • Long, narrow vertical pouch (about 2–3 oz or 60–100 cc). Same shape as the duodenal switch pouch but smaller
  • No intestinal bypass
  • The VG significantly restricts the volume of food that can be eaten
  • No malabsorption of nutrients or dumping
  • Laparoscope and other instruments are placed through small incisions in the abdomen to reach the stomach
  • No dumping syndrome
  • Bypasses the part of the intestines which allos for less nutrients, calories and fats
Realistic ExpectationsPatients can expect to lose 60–70% of excess weight in about 2 years. Long term results not currently available. Easily converted to Duodenal Switch or Gastric Bypass if needed.Weight loss with this procedure is often fast and dramatic. Most people are also able to keep the weight off long term. Within a year, 60 to 75 percent of excess body weight is often gone.
Post Surgery Dietary InfoPatient must:

  • Eat 3 meals a day containing 600–800 calories per day (recommended for the first 24 months) and about 1,000-1,200 thereafter (no dumping or diarrhea)
Patient must:

  • Follow the diet plan which consist of 4 different levels: liquids, pureed food, soft food and finally solid food.
Realistic ExpectationsPatients can expect to lose 60–70% of excess weight in about 2 years. Long term results not currently available. Easily converted to Duodenal Switch or Gastric Bypass if needed.Weight loss with this procedure is often fast and dramatic. Most people are also able to keep the weight off long term. Within a year, 60 to 75 percent of excess body weight is often gone.
Candidate EfficacyVSG is effective for high-risk or very high BMI patients (BMI > 60 kg/m2) as a “first-stage” procedure. The complication rate is much lower than it is with the RNY Gastric Bypass or Duodenal Switch because there’s no intestinal bypass.Good candidates have a BMI over 40 or those with a BMI between 35 and 40 plus other weight-related health conditions.
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