The One Anastomosis Gastric Bypass (OAGB)
The One Anastomosis Gastric Bypass (OAGB) is a weight loss procedure that involves creating a single connection between the stomach and the small bowel. Unlike the traditional Roux-en-Y gastric bypass, which has an additional connection between two sections of the small bowel, the OAGB simplifies the surgical operation and requires less operative time.
How is this procedure performed?
The OAGB is performed using laparoscopic (keyhole) surgery. During the procedure, a small stomach pouch is created. This pouch is then connected to the small bowel, bypassing approximately 150-200cm of small bowel. The OAGB works by restricting the amount of food you can eat and reducing the number of calories your body absorbs. By creating a smaller stomach pouch, you will feel full faster and consume less food. Additionally, the bypassed section of the small intestine leads to fewer calories and nutrients being absorbed, resulting in further weight loss.
Advantages:
- Effective weight loss: OAGB has been shown to result in significant weight loss, with patients often losing over 80% of their excess weight. With the majority occurring in the first year following surgery.
- Improved health conditions: OAGB can lead to the resolution or improvement of obesity-related health conditions such as type 2 diabetes, high blood pressure, and sleep apnoea.
- Simplified surgical procedure: OAGB involves a single connection (anastomosis), making it a simpler surgical technique compared to traditional Roux-en-Y gastric bypass procedures with reduced risk of anastomotic complications and a lower risk of bowel obstruction caused by internal hernia.
Considerations:
- Gastroesophageal reflux disease (GERD): Patients with pre-existing reflux or severe GERD may be better suited to traditional gastric bypass (Roux-en-Y Gastric Bypass) as it offers better control of reflux symptoms.
- Ulcer risk: If taking NSAIDs or smoking, there is a higher risk of developing ulcers in the stomach pouch.
- Potential risks: OAGB carries potential risks, including bleeding, infection, bile reflux, and blood clots. These risks will be discussed with you by Dr. Jason Robertson and our team.
- Commitment to a healthy lifestyle: Long-term success with OAGB requires a commitment to a balanced diet and regular exercise to maintain weight loss and overall health.
- Follow-up care: OAGB requires ongoing follow-up care, including regular check-ups, vitamin supplementation and monitoring of nutritional status and overall well-being.
The Silastic Ring in Gastric Bypass Surgery
In gastric bypass surgeries a silastic ring can be placed around the new stomach pouch. This ring can enhance the feeling of fullness and help with better portion control, aiding in weight loss and long-term weight management. Placement of a silastic ring is not suitable for everyone, and in a small percentage of cases, additional surgery may be required to remove it. Dr Jason Robertson and our team can provide you with all the necessary information to determine if the placement of a silastic ring during your gastric bypass surgery is right for you.
