Mini Gastric Bypass and Revision Surgery in Sharjah

What is mini gastric bypass and revision surgery?

A mini gastric bypass, also called a one-anastomosis gastric bypass (OAGB), is a bypass built with one join instead of two. The surgeon forms a long, slim pouch from the upper stomach and connects a loop of small intestine, measured some distance down from the stomach, directly to the end of that pouch. Food then bypasses the rest of the stomach and the first stretch of bowel, while bile and digestive juices flow down the bypassed loop to meet it.

Revision surgery means a second weight-loss operation on someone who already has one. The mini gastric bypass is one of the operations surgeons use to convert a sleeve or a band, alongside the Roux-en-Y gastric bypass and other options. Both uses sit under the general picture on the bariatric surgery overview page.

At Dar Al Kamal Hospital, Sharjah, mini gastric bypass and revision operations are performed by keyhole surgery by the general and laparoscopic surgery team.

Who needs it

As a first operation, the mini gastric bypass is considered for adults who meet the general BMI criteria for weight-loss surgery, often those with a higher BMI or type 2 diabetes, and whose reflux symptoms are mild. The single join makes the operation shorter than a Roux-en-Y bypass, and it can be adjusted or converted later.

Revision surgery is considered for four main reasons:

• severe acid reflux after a sleeve gastrectomy;
• band problems such as slippage, erosion or difficulty swallowing with an adjustable gastric band;
• significant weight regain, or diabetes returning, some years after a first operation;
• nutritional or eating problems caused by the first operation.

The right revision depends on why the first operation needs attention, which the work-up identifies. Reflux after a sleeve often points to a Roux-en-Y bypass, while regain after a sleeve may suit a mini bypass or a duodenal operation. A band may be removed alone, removed and converted at the same operation, or removed first and converted once the stomach has healed.

What happens

The revision work-up starts with finding out what the first operation left behind. A gastroscopy looks inside the pouch or sleeve for inflammation, ulcers or a hiatus hernia, and a contrast study or CT scan maps the anatomy. Records of the original operation are requested where possible. A dietitian at Dar Al Kamal Hospital, Sharjah reviews how you eat now, because regain often has an eating pattern alongside it that surgery alone leaves unchanged.

The operation itself is performed under general anaesthesia by keyhole surgery. For a mini bypass, the surgeon staples the long pouch and makes the single join to a measured loop of bowel. In a revision, scar tissue from the first operation is carefully freed first, a band and its port are removed if present, and the new anatomy is then built. Joins are tested for leaks before closing, and walking starts early.

Preparing for it

A psychological evaluation is arranged as part of your care pathway, and a fresh assessment of your weight history, eating habits and vitamin levels is part of preparation for any revision. Bring your previous operation notes and any old scan reports; they help the surgeon plan.

Stop smoking completely, as it slows healing and raises the risk of ulcers at the join. Your medicine list matters: diabetes treatment and blood thinners need a plan, and anti-inflammatory painkillers are usually stopped. Arrange time away from work and choose a date that keeps your early recovery well clear of Ramadan.

Afterwards

The diet steps up from fluids to soft food and small meals, guided by the dietitian. After a mini bypass or a conversion to any bypass, lifelong supplements are needed: a multivitamin with iron, calcium with vitamin D, and vitamin B12, with blood tests at follow-up. Bile can sometimes reach the pouch after a mini bypass, so report any bitter or burning reflux at your visits.

Fasting in future Ramadans is planned with your team once you are eating normal textures, with protein and water at Suhoor and a small, low-sugar Iftar. Your surgeon gives you a personal timeline for work and driving.

Contact the hospital urgently if you have a fever, a fast heart rate, worsening abdominal pain, or vomiting that stops you keeping fluids down. **Go to the emergency department straight away if you vomit blood or pass black stools, or have chest pain, breathlessness or a painful, swollen leg.**

Cost and insurance

Insurers look closely at revision surgery. Revision to treat a complication, such as a slipped band or severe reflux, is often assessed differently from revision for weight regain, and pre-approval usually needs gastroscopy findings, imaging and the original operation records. A first mini gastric bypass follows the usual bariatric criteria. Dar Al Kamal Hospital, Sharjah can help you check your cover on 06 599 7777.