SADI-S in Sharjah
Medically reviewed by Dar Al Kamal Team
What is SADI-S?
SADI-S is a single-join version of the duodenal switch, the most absorption-changing family of weight-loss operations. The stomach is first shaped into a sleeve. The duodenum, the first part of the small intestine, is then divided just beyond the pylorus, the muscular valve at the stomach outlet. A loop of the lower small intestine is brought up and joined to the short cuff of duodenum left attached to the stomach.
Food therefore leaves the sleeve through the pylorus and passes straight into the lower bowel. Bile and pancreatic juices travel down the long bypassed stretch of intestine and only mix with food in the final part, the common channel, where most fat and protein absorption then happens. This shorter meeting point is what gives SADI-S its strong effect on weight and blood sugar.
Keeping the pylorus is the detail that sets SADI-S apart from a gastric bypass: the valve still meters food out of the stomach, so dumping after sugary food is uncommon. The bariatric surgery overview page describes the wider options, and Dar Al Kamal Hospital, Sharjah offers SADI-S within its general and laparoscopic surgery service.
Who needs it
SADI-S is generally considered for two groups. The first is adults with a very high BMI, or severe obesity with poorly controlled type 2 diabetes, for whom a stronger operation is appropriate. The second is people who already have a sleeve gastrectomy and have regained weight or whose diabetes has returned; because the sleeve is already in place, SADI can be added as a second stage. For people at the highest BMI levels, a sleeve first and SADI later is sometimes planned from the start.
The alternatives include a sleeve alone, a Roux-en-Y or mini gastric bypass, and the SASI bypass, which keeps the duodenal route open. SADI-S asks for the most careful nutritional follow-up of all of these. The decision weighs your BMI, diabetes, bowel habits, any reflux, and your ability to take supplements and attend blood tests for life.
What happens
SADI-S is performed under general anaesthesia by keyhole surgery. If you have no sleeve, the surgeon creates one first. The duodenum is then freed and stapled across just beyond the pylorus. The small intestine is measured back from where it joins the large bowel, and that loop is stitched to the duodenal cuff to make the single join.
For a second-stage SADI after an earlier sleeve, only the duodenal division and the join are needed. The staple lines and join are checked for leaks before closing. You wake in the recovery area, begin sips of water as advised, and walk early. You go home once you are drinking well and your pain is controlled.
Preparing for it
Nutritional preparation is especially important for SADI-S. Blood tests measure protein, iron, vitamin B12, folate, calcium and the fat-soluble vitamins A, D, E and K, and any shortfall is corrected before surgery. A dietitian at Dar Al Kamal Hospital, Sharjah explains the protein targets you will need to meet every day for life and helps you plan meals around them.
A psychological evaluation is arranged as part of your care pathway. Bring your medicine list; diabetes treatment usually needs reducing from the day of surgery, and some medicines are absorbed differently afterwards. Stop smoking completely. Choose a date that keeps the early healing period away from Ramadan.
Afterwards
The diet progresses from fluids to soft food and then to small, protein-rich meals. Stools are often softer and more frequent than before, particularly after fatty food, and a lower-fat diet keeps the bowel more settled. Protein at every meal protects muscle, hair and healing. Your surgeon agrees a timeline for work and driving with you.
Lifelong supplements are essential after SADI-S: a multivitamin, calcium with vitamin D, iron, vitamin B12, and specific fat-soluble vitamins, with blood tests several times a year at first and at least yearly for life. Low levels are treated early through vitamin deficiency treatment. In later Ramadans, fasting is planned with your team, with Suhoor rich in protein and plenty of water between Iftar and Suhoor to offset fluid lost in loose stools and the Sharjah heat.
Contact the hospital urgently if you have a fever, a fast heart rate, worsening abdominal pain, repeated vomiting, or diarrhoea with dizziness or very dark urine. **Go to the emergency department straight away if you have chest pain, breathlessness, confusion or a painful, swollen leg.**
Cost and insurance
SADI-S needs insurance pre-approval, and many UAE plans exclude weight-loss surgery. Insurers may treat a second-stage SADI after a sleeve as revision surgery, and a newer procedure may be assessed differently, so confirm the exact procedure with your insurer. Criteria usually include documented BMI, weight-related illness, supervised weight management, and dietitian and psychological assessments. Dar Al Kamal Hospital, Sharjah can help on 06 599 7777.
Related services
Frequently asked questions
What are the risks of SADI-S?
SADI-S carries the usual keyhole surgery risks of bleeding, infection, clots and anaesthetic reactions, plus a leak from the staple lines or the join. Its main long-term risks are protein malnutrition and deficiencies of iron and the fat-soluble vitamins, along with frequent loose stools, and a small number of people need further surgery to lengthen the common channel. Your surgeon explains these before you decide.
Why does SADI-S need so much vitamin monitoring?
SADI-S needs close vitamin monitoring because bile, which the body uses to absorb fat and fat-soluble vitamins, meets food only in the last part of the small intestine. Deficiencies of vitamins A, D, E and K can develop quietly, so regular blood tests catch them early.
Is SADI-S the same as a duodenal switch?
SADI-S is a simplified form of the duodenal switch that uses one join to the intestine instead of two. Both keep the pylorus and send food to the lower small intestine.
Can SADI-S be done after a sleeve gastrectomy?
SADI-S is often done as a second stage after a sleeve gastrectomy, for weight regain or returning diabetes. Only the duodenal division and the single join are added.
Will I get dumping syndrome after SADI-S?
Dumping syndrome is uncommon after SADI-S, because the pylorus is kept and still controls how fast food leaves the stomach. Fatty meals are more likely to cause loose stools than sugary food is to cause dumping.
Can I fast in Ramadan after SADI-S?
Fasting in Ramadan after SADI-S is possible for many people once healing is complete, after a plan agreed with the surgeon and dietitian. Hydration needs extra care, because loose stools and hot fasting days both increase fluid loss.
Book an appointment
Tell us your preferred day and time. Our team calls you back to confirm.