Woman's Stomach

Duodenal Switch Surgery

Morbid obesity can shorten life expectancy and have numerous negative effects on your physical and mental health.

If you've exhausted other options on your own, single duodenal switch surgery may help you shed excess weight and address comorbidities.

Learn why patients in the greater Houston, TX, area trust Dr. Matthew St. Laurent to perform complicated weight loss surgeries...

The SIPS Technique SADI-S vs. BPD-DS


SIPS stands for stomach intestinal pylorus sparing. This is a variation on the traditional duodenal switch (BPD-DS) known as single anastomosis duodeno-ileal bypass with sleeve gastrectomy (SADI-S) or single loop DS. SADI-S maintains more of the small intestine, and transects it at one point rather than two. Dr. St. Laurent performs SIPS/SADI-S because it reduces the risk of complications.

Duodenal Switch Explained by Dr. St. Laurent

Dr. St. Laurent presents a detailed overview of a laparoscopic loop duodenal switch procedure. Through an incision on the left side of the patient, Dr. St. Laurent dissects the lower portion of the stomach before dividing the duodenum to achieve duodeno-ileal anastomosis. After inserting a Jackson Pratt drain on the lower border of the stomach to remove any leftover abdominal irrigation, the abdomen is closed with sutures. We can provide more information about this bariatric surgery option during your visit to our Houston area practice.

Risks and Benefits of Duodenal Switch Surgery

Risks of SADI-S

Common risks after duodenal switch surgery include acid reflux (GERD), gallstones, and loose bowel movements. Because of the nature of the surgery, there is also an increased risk of malnutrition and vitamin deficiencies. Since our Houston area practice performs SADI-S rather than BDP-DS, patients are less likely to experience nutritional deficiencies from malabsorption.

Benefits of SADI-S

Loop duodenal switch surgery provides more dramatic weight loss results than other bariatric surgery procedures. It may also be a better option than gastric bypass for morbidly obese patients. For people who have attempted a different bariatric option in the past with lacking results, that procedure can likely be converted into a duodenal switch to promote additional weight loss.

Learn More About Duodenal Switch Surgery

Loop duodenal switch surgery can achieve dramatic weight loss results. It's an excellent option for people who are morbidly obese or whose previous bariatric surgery failed to achieve results.

A board-certified surgeon, Dr. St. Laurent has performed more than 4,500 bariatric procedures. He brings years of experience to each patient's case, and takes time to cover the advantages and disadvantages of each surgery with you.

If you live in Southeast Texas and would like more information about duodenal switch, contact our practice online. You can also reach our Houston area practice by phone.

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(281) 921-1890

Dr. St. Laurent and the team at Northwest EndoSurgical
Dr. St. Laurent and his Southeast Texas bariatrics team have helped thousands of patients just like you.

5-Star Care A Trusted Bariatric Surgeon Serving Southeast Texas


Dawn Butler


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Love him. He doesn't just do your exam, he educates you. I was not rushed at all, he sat and listened and explained exactly what he was going to do. 

I highly recommend him.

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Francisco Martinez


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Dr. Laurent and staff work extremely helpful. They were happy answer my questions. They gave me great reassurance and guidance and I would definitely recommend to anyone thinking of visiting Dr. Laurent.

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Woman looking at mirror and smiling at weight loss results Woman looking at mirror and smiling at weight loss results

Candidates for Duodenal Switch Surgery

BMI of 50 or Higher

A duodenal switch is ideal for people with a BMI of 50 or higher, which is the Class 3/severe obesity range. The bariatric procedure will typically help these patients lose a substantial amount of their excess weight.

BMI of 45 with Obesity Comorbidities

Duodenal switch may also be recommended for patients with a BMI of 45 or greater with comorbidities. These health conditions include type 2 diabetes, high blood pressure, and sleep apnea.

Revision Bariatric Surgery

If a LAP-BAND®, sleeve gastrectomy, or gastric bypass was ineffective, it can be converted into a SADI-S. This revision bariatric surgery option is common for failed gastric sleeve and gastric bypass procedures.

Healthy Enough to Undergo the Procedure

While SIPS has a lower risk of complications than BPD-DS, it is still a complex surgical procedure. Patients should be in good health and able to undergo surgery without unnecessary risk of complications.

How Do We Determine Duodenal Switch Pricing?

The cost of duodenal switch surgery varies by patient since each procedure is personalized to their needs. During a consultation at our Houston area practice, we can provide a breakdown of the various costs involved and discuss the different factors that affect the price of your surgery.

The Surgeon Matters

One significant cost factor is the choice of surgeon. Although there are other bariatric surgeons who offer lower prices, the cost of undergoing treatment with a highly skilled and respected surgeon like Dr. St. Laurent ensures you will receive the highest standards of care as well as ongoing support.

Insurance and Financing

If we find that your insurance will not cover the full cost of SIPS/SADI-S, we can review available financing options that will make the procedure more affordable.

Woman talking with doctor

Five Stars!

"Dr. St. Laurent cannot be surpassed in his knowledge and expertise related to weight loss surgery. I give him five stars without hesitation." Elizabeth Chippendale (2020)

Contact Us Learn More about Your Surgical Options

Duodenal switch surgery may be the solution to your struggles with obesity. Dr. St. Laurent has performed thousands of bariatric surgeries. When you visit his office in the Houston area, he can discuss all of the pros and cons of SIPS/SADI-S with you in greater detail. To speak with a board-certified surgeon who will put your health goals first, contact our bariatric center online. You can also reach our office serving Southeast Texas by phone.

(281) 921-1890

Here's a look at how duodenal switch surgery works...

The Surgical Process

A loop duodenal switch may be what you need to shed excess weight and address serious health concerns. 

Here is a simplified step-by-step look at the loop duodenal switch process:

A loop duodenal switch may be what you need to shed excess weight and address serious health concerns. 

Initial Consultation

During your initial visit to our Houston area practice, we will review your medical history and go over your weight loss goals. We can answer any questions you have, and compare duodenal switch to gastric bypass and other weight loss surgery options. We want you to feel confident and informed about your health decisions.

Administering Anesthesia

Loop duodenal switch surgery is performed using general anesthesia and local anesthetic. This ensures patients are not conscious during the bariatric procedure and feel no pain.

Laparoscopic Incisions

Dr. St. Laurent is a skilled laparoscopic surgeon. Laparoscopic surgery uses precise instruments that are inserted into the abdomen through small incisions. This leads to less scarring, fewer risks during the procedure, and faster healing times than open surgery.

Adjusting the Stomach
and Intestine

With the incisions made, Dr. St. Laurent first performs a gastric sleeve to reduce the size of the patient's stomach. Next, he will reroute the gastrointestinal tract to bypass about half of the small intestine.

Completing the Procedure

With all adjustments to the stomach and intestine completed, sutures are placed to prevent gastric leak and post-operative hernia.

Recovery What to Expect after Duodenal Switch

Man drinking juice and smiling

After the Procedure

Patients are monitored after surgery to ensure no immediate complications are present. We will provide detailed instructions on how to manage discomfort and other surgical side effects.

Changes to Your Diet

As with other bariatric surgeries, patients will have a transitional diet while they recover. Starting with liquids, they will slowly reintroduce solid foods. We'll work with you to ensure your daily diet is healthy, nutritious, and helps you achieve your weight loss goals.

Returning to Normal Activities

Patients are usually able to return to work after two weeks, with full recovery in about six weeks. Walking is encouraged each day to help promote circulation.

Comparison SADI-S vs. Other Weight Loss Surgeries

Duodenal switch surgery is more complicated than other bariatric procedures. That said, the nature of the SIPS/SADI-S procedure allows it to achieve greater weight loss than gastric bypass or sleeve gastrectomy. The duodenal switch is also a potential revision option after a failed gastric bypass or sleeve gastrectomy.

During the consultation process at our office serving the Houston area, we can assess your current health and review your wellness goals. Dr. St. Laurent can then compare different procedures and their potential outcomes. In some cases, less invasive bariatric techniques may be ideal.

If you would like a general overview of different weight loss surgery options, we created a convenient series of tables that compare surgical procedures, their advantages, the potential complications, and projected weight loss after surgery is completed.

SADI-S Infographic

Patient Reviews from the Greater Houston Area


Rob Tate


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I have never met a staff more caring and friendly. The quality and time the staff spent with me to explain everything in great detail make this my go to place to start my journey.

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Ann Donaldson


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Dr. St. Laurent is very thorough in his explanation and takes the time to answer every question.  The staff is excellent and makes me feel safe and successful on my journey.  They’re a great team!!

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Dr. Matthew St. Laurent

Northwest Endosurgical

At Northwest Endosurgical in Houston, Texas, Dr. Matthew St. Laurent helps patients achieve dramatic weight loss and improved health through bariatric surgery. Dr. St. Laurent is one of the most experienced bariatric surgeons in greater Houston, and he is affiliated with several professional organizations, including:

  • The American Society for Metabolic and Bariatric Surgery
  • The American College of Surgeons
  • The Society of American Gastrointestinal Endoscopic Surgeons
  • The Obesity Action Coalition
  • The American Medical Association
  • The Texas Medical Association
  • The International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO)

To schedule a consultation, book online or give us a call at (281) 921-1890.

Contact Us Today

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