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Duodenal Switch Specialist

Northwest EndoSurgical

Matthew St. Laurent, MD

Bariatric Surgeon located in Cypress, Houston, TX

Duodenal switch surgery results in a more significant weight loss than any other bariatric procedure, making it the most effective form of weight loss surgery to date. At Northwest EndoSurgical in Cypress, Houston, Texas, board-certified surgeon and weight loss expert Dr. Matthew St. Laurent is one of the most sought-after bariatric surgeons in the Houston area, helping men and women quickly shed excess pounds and keep it off through this revolutionary surgical procedure. If you’d like to learn more, call or book your appointment online today.

Duodenal Switch Q & A

What is duodenal switch surgery?

The duodenal switch procedure, also known as biliopancreatic diversion with duodenal switch (BPD/DS), is often referred to as a metabolic weight loss surgery because it not only results in weight loss, but it actually works to regulate metabolism, hunger, and many of the medical problems that cause weight gain.

That means that the duodenal switch procedure is both restrictive and malabsorptive in nature: The restrictive component of the procedure is responsible for the majority of the early weight loss, while the malabsorptive component will help you maintain your weight loss long-term.

The BPD/DS procedure is the second stage of the vertical sleeve gastrectomy surgery, and severely obese people who’ve lost an insufficient amount of weight from previous gastric sleeve or band surgeries can benefit from this procedure.

For patients with an extremely high BMI of 50 or higher, it’s best to perform the procedure in two stages. These patients should aim to lose 60-80 pounds from the gastric sleeve component of the procedure before undergoing the small bowel portion of the surgery.

Similar to gastric bypass, the duodenal switch procedure involves restriction and malabsorption of what the patient eats. The procedure rearranges the small intestine to bypass its first two portions, the duodenum and the jejunum, which results in a significant reduction in the number of nutrients, particularly dietary fats, that the body absorbs.

This powerful combination of restriction and malabsorption not only leads to a significant reduction in weight, but it’s also what gives the duodenal switch surgery a 98% cure rate for type 2 diabetes — the highest of any bariatric surgery.

The duodenal switch procedure can be performed as either an open or laparoscopic surgery. During the laparoscopic duodenal switch procedure, also known as minimally-invasive surgery (MIS), it’s performed via five small incisions in the abdomen. During the open form of the surgery, or open duodenal switch, it’s completed via a long incision made across the abdomen.

The laparoscopic form of the surgery is the latest and most popular surgical technique because it allows the body to heal faster and involves less trauma and fewer complications.

What does the duodenal switch procedure entail?

During duodenal switch surgery, Dr. St. Laurent will perform a partial gastrectomy to divide your stomach along its greatest curvature and reduce the volume of food that your stomach cavity can hold.

The new stomach pouch will have the functionality of a normal stomach; it’ll only be smaller in size. Unlike gastric bypass surgery, however, the pyloric valve and duodenum will remain and continue to function as normal.

The preservation of your stomach’s functional anatomy allows food to still be broken down and passed through the intestines for nutrient absorption, just like the normal digestive process.


Dr. St. Laurent will also reconfigure your small intestine during the procedure to allow bile and pancreatic juices to flow separately from digested food and meet closer toward the middle or end of your digestive tract.

This reconfiguration only allows a small section of your intestines to digest food before it moves into the colon, thus restricting the number of calories and fat that your body actually absorbs during the digestive process.

What are the benefits of duodenal switch surgery?

The duodenal switch procedure is not only more effective than other bariatric procedures, but it also affords many more advantages. Some of the main benefits include:


  • The functionality of your stomach is not impaired in any way
  • You can consume larger portions of food before feeling full, and you can eat the same foods you ate prior to surgery (small steak, chicken salad, pasta)
  • You can digest your food as normal because the pyloric valve and duodenum remain functional
  • The risk of developing ulcers, blockages, or dumping syndrome is greatly reduced because the pyloric valve remains intact
  • You can reach and maintain a healthy weight, reduce the risk of obesity-related diseases, and relieve any existing obesity-related health problems
  • You can feel healthier and more satisfied with your body
  • You can expect your energy and stamina to gradually increase as you lose weight

What should I expect from my consultation?

As with any major surgical procedure, there are risks associated with the duodenal switch surgery. Dr. St. Laurent will thoroughly examine your medical history and current condition during a one-to-one consultation to determine if you’re an ideal candidate for the procedure.

The team at Northwest Endo Surgical believes in honesty and integrity, and always provides patients with detailed and unbiased information on all surgical and non-surgical weight loss treatments.

Because Dr. St. Laurent and his team genuinely care about your health and safety, they want you to make confident and informed decisions regarding your treatment.

Dr. St. Laurent only performs procedures that have been proven safe and effective because he believes that a healthy body and a happy, confident life are within everyone’s reach, and he’s committed to helping his patients achieve their weight loss goals.

Contact Dr. St. Laurent in today for more information about bariatric surgery and any other weight loss treatments available at Northwest EndoSurgical.


*Individual results may vary