• Dr. Jitesh Parmar

Roux En-Y Gastric bypass

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An Overview


Gastric bypass, also known as Roux-en-Y gastric bypass, is a highly effective weight loss procedure that has been performed for decades. Renowned for its ability to achieve significant weight loss and improve obesity-related conditions, it is often referred to as the "gold standard" in bariatric surgery.

How Gastric Bypass Works


The surgery involves two key steps :

  • Stomach Reduction :  The stomach is reduced to a small pouch, about the size of a golf ball, which significantly limits food intake.
  • Intestinal Rerouting :  A portion of the small intestine (around 100 cm) is bypassed, reducing calorie and nutrient absorption. This alteration also impacts gut hormones, bile acid metabolism, and gut bacteria, which contribute to improved metabolic health and conditions like type 2 diabetes.

The procedure is minimally invasive, performed laparoscopically using 4-5 small incisions, and typically takes 1 to 2 hours. Most patients stay in the hospital for one night and return home after 24 to 48 hrs stay in hospital.

Benefits of Gastric Bypass Surgery


  • Significant Weight Loss :  Patients often lose 60-80% of their excess weight within the first 1-2 years, with most achieving 30-35% total body weight loss in the first year.
  • Resolution of Obesity-Related Conditions :  Type 2 diabetes, chronic acid reflux, hypertension, high cholesterol, and sleep apnea often improve or resolve entirely. Diabetes remission can occur within days of surgery due to hormonal changes.
  • Improved Quality of Life :  Patients experience increased mobility, better self-esteem, and enhanced overall health.

Eligibility Criteria For Gastric Bypass Surgery


  • A Body Mass Index (BMI) between 30 and 35, combined with a weight-related health condition such as type 2 diabetes, heart disease, or high blood pressure.
  • A BMI greater than 35.
  • Previous unsuccessful attempts to lose significant weight through traditional methods, including diet and exercise.
  • Being medically fit to safely undergo general anaesthesia.

Post-Surgery Recovery and Lifestyle


Recovery is typically quick, with most patients resuming work within 2-4 weeks. Success depends on adherence to dietary and exercise plans provided by the bariatric team. Long-term weight loss and health improvements are achievable with these lifestyle changes.

Why Choose Gastric Bypass Surgery?


With its high success rate and ability to resolve obesity-related conditions, gastric bypass is a transformative option for those struggling with severe obesity.

Considerations for Certain Patients


While highly effective, this procedure may not be suitable for everyone. Individuals with a past history of multiple other operations on abdomen make laparoscopic gastric bypass a challenging procedure and therefore will increase unacceptable level of risks, hence these individuals may not be suitable for gastric bypass. These patients are advised to consider alternative surgical options like gastric sleeve.

Final Thoughts


Gastric Bypass is a widely performed and effective weight loss surgery that not only facilitates significant weight reduction but also promotes better overall health. By addressing physical and hormonal factors related to hunger, it empowers individuals to achieve lasting results and improve their quality of life.