Dr Ashok Gunawardene

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240 Hoppers Ln, Werribee VIC 3030

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Gastric Bypass Surgery Epping Northern Private Hospital

Overview

Roux-en-Y Gastric Bypass (RYGB)

Roux-en-Y Gastric Bypass (RYGB) is a minimally invasive bariatric surgery designed to assist weight loss in individuals with severe obesity by reducing stomach capacity and changing digestion. This page provides an overview of the procedure, benefits, risks, and expected recovery, based on current clinical guidelines and evidence-based practices. Northern Surgical Care, led by a registered specialist general surgeon, offers consultations to assess and manage conditions requiring RYGB.

In addition, we provide One Anastomosis Gastric Bypass (OAGB), also known as Mini Gastric Bypass.

Roux-en-Y Gastric Bypass Surgery Epping Northern Private Hospital

What this Weight Loss Surgery Involves

  • Roux-en-Y Gastric Bypass Epping Northern Private Hospital (RYGB):
    • Conducted under general anaesthesia with laparoscopic techniques.
    • Involves the creation of a small stomach pouch (20-30 mL) by dividing the stomach, thereby restricting the amount of food consumed.
    • The small intestine is separated, with a portion connected to the stomach pouch (the “Roux limb”), bypassing part of the stomach and upper intestine to reduce nutrient absorption. A second anastomosis reconnects the bypassed intestine for proper mixing of digestive juices with food.
    • Generally takes 2-3 hours, based on the patient’s anatomy and other clinical factors.

Designed for patients with severe obesity, the gastric bypass procedure typically applies to those with a BMI of 35 or higher, or 30 or higher with related health conditions such as type 2 diabetes or hypertension, to assist with weight loss. Eligibility is determined by an in-depth medical and psychological evaluation.

Gastric Bypass (RYGB) Surgery Epping Northern Private Hospital

Benefits

  • Notable weight loss: Most patients typically achieve 25-35% total weight loss within 1-2 years, based on clinical evidence.
  • Enhancement in obesity-related conditions: May improve or resolve health issues like type 2 diabetes, hypertension, sleep apnoea, or dyslipidemia, with studies showing diabetes remission in up to 80% of cases, although outcomes can differ.
  • Minimally invasive: The laparoscopic method produces smaller scars, reduces post-surgery pain, and offers a quicker recovery compared to open surgery.
  • Metabolic benefits: May alter gut hormones to decrease hunger and enhance glucose metabolism, aiding in weight loss and diabetes management.
  • Enduring outcomes: Studies suggest long-term weight loss and health improvements when lifestyle changes are maintained.

The results depend on adherence to lifestyle changes after surgery, such as diet and exercise. Benefits are discussed during consultation to ensure informed choices.

Risks

As with all surgeries, RYGB involves potential risks, which will be discussed during your consultation. These include:

  • General Surgical Risks:
    • Bleeding or infection at the incision sites or inside the body.
    • Adverse reactions to anaesthesia.
    • Blood clots (e.g., deep vein thrombosis or pulmonary embolism).
  • Procedure-Specific Risks:
    • Anastomotic leak: A rare complication (1-2%) where stomach or intestinal contents leak from the connection sites, possibly resulting in infection or requiring further surgical intervention.
    • Dumping syndrome: The rapid movement of food into the small intestine, causing nausea, sweating, or diarrhoea, especially after consuming high-sugar meals.
    • Vitamin and mineral deficiencies: Reduced nutrient absorption may cause deficiencies in vitamins (such as B12, vitamin D) or minerals (like iron, calcium), requiring lifelong supplementation.
    • Marginal ulcers: Ulcers at the anastomosis site that may lead to pain or bleeding.
    • Bowel obstruction: Scarring or adhesions inside the body may cause blockages, potentially needing further treatment.
    • Weight regain: It may happen if the recommended dietary and lifestyle changes are not followed.
  • Long-Term Considerations:
    • Lifelong dedication to dietary changes, vitamin supplementation, and regular follow-up care.
    • Rare complications or inadequate weight loss may necessitate revision surgery in some cases.

The risks are lowered through careful selection of patients and diligent postoperative care. A bariatric surgeon will assess and review risk factors before the surgery.

Expected Recovery Time

  • Hospital stay: Patients usually stay 2-4 days, based on recovery and if no complications arise.
  • Recovery at Home:
    • Light activities, including walking, can typically be resumed within a few days to a week.
    • Full recovery, including returning to work or regular activities, usually takes 3-5 weeks, depending on the patient’s health and job requirements.
    • For proper healing, it’s recommended to avoid strenuous exercise or heavy lifting for 6-8 weeks.
  • Postoperative Care:
    • Patients are guided by a dietitian to follow a staged diet, starting with liquids and advancing to soft and solid foods over 4-8 weeks.
    • Lifelong vitamin and mineral supplementation is necessary to avoid deficiencies.
    • Follow-up appointments are scheduled regularly to monitor weight loss, nutritional health, and general wellbeing.
  • Variations: The recovery time may vary depending on factors like age, comorbidities, or complications. Patients are encouraged to report symptoms such as persistent pain, fever, vomiting, or jaundice immediately.

What to Expect

During a consultation at Northern Surgical Care, a specialist general surgeon will review the patient’s medical and weight history along with health goals. Diagnostic tests like blood work, endoscopy, or imaging may be recommended to assess surgery eligibility. The procedure, risks, benefits, and aftercare will be explained to support informed decision-making. With Liora Health, patients receive multidisciplinary support from dietitians and psychologists to prepare for surgery and ensure long-term weight loss. Contact Northern Surgical Care for a personalised consultation in Epping Northern Private Hospital.

Frequently Asked Questions

HOW DOES GASTRIC BYPASS SURGERY COMPARE TO SLEEVE GASTRECTOMY?

In gastric bypass, the stomach size is reduced, and part of the small intestine is bypassed, affecting calorie absorption and gut hormones. Sleeve gastrectomy only reduces stomach size. Gastric bypass may have more pronounced metabolic benefits for patients, particularly those with type 2 diabetes or severe reflux.

AM I REQUIRED TO TAKE VITAMINS FOR THE REST OF MY LIFE?

Yes. Gastric bypass alters nutrient absorption, so lifelong supplementation of vitamins and minerals is essential to prevent deficiencies. Ongoing blood tests and follow-ups will monitor your nutritional health as you progress in your weight loss journey. 

IS IT POSSIBLE TO REGAIN WEIGHT AFTER GASTRIC BYPASS?

While gastric bypass provides lasting results, weight regain is possible if lifestyle and dietary recommendations aren’t followed. This is why we’ve collaborated with Liora Health for ongoing care.

Why Choose Northern Surgical Care?

EXPERIENCED, EVIDENCE-BASED CARE

Patients receive care based on clinical evidence and best-practice guidelines, provided by Dr. Ashok Gunawardene, a registered specialist general surgeon for bariatric surgery.

COMPREHENSIVE RISK ASSESSMENT

Patient safety is prioritized with a careful pre-operative assessment, suitable procedure selection, and clear communication about risks, benefits, and long-term considerations.

MULTIDISCIPLINARY SUPPORT

Partnering with Liora Health, patients receive integrated care from dietitians, psychologists, and nursing staff to support pre-surgery preparation, recovery, and lasting weight loss.

References

  • Schauer PR, Bhatt DL, Kirwan JP, et al. Bariatric surgery versus intensive medical therapy for diabetes—5-year outcomes. N Engl J Med. 2017;376(7):641-51. doi:10.1056/NEJMoa1600869
  • Adams TD, Davidson LE, Litwin SE, et al. Weight and metabolic outcomes 12 years after gastric bypass. N Engl J Med. 2017;377(12):1143-55. doi:10.1056/NEJMoa1700459
  • Sjöström L, Narbro K, Sjöström CD, et al. Effects of bariatric surgery on mortality in Swedish obese subjects. N Engl J Med. 2007;357(8):741-52. doi:10.1056/NEJMoa066254
  • Arterburn DE, Telem DA, Kushner RF, et al. Benefits and risks of bariatric surgery in adults: a review. JAMA. 2020;324(9):879-87. doi:10.1001/jama.2020.12567
  • Courcoulas AP, King WC, Belle SH, et al. Seven-year weight trajectories and health outcomes in the Longitudinal Assessment of Bariatric Surgery (LABS) study. JAMA Surg. 2018;153(5):427-34. doi:10.1001/jamasurg.2017.5025