Duodenal switch surgery, also known as biliopancreatic diversion with duodenal switch (BPD-DS), is a complex bariatric surgery procedure performed to help individuals with severe obesity achieve significant weight loss. It is a combination of two surgical techniques: sleeve gastrectomy and intestinal bypass.

Here are the key steps involved in duodenal switch surgery:

Sleeve Gastrectomy: The first part of the procedure involves performing a sleeve gastrectomy. This involves removing a large portion of the stomach, leaving behind a smaller, banana-shaped stomach pouch. The reduced stomach size restricts the amount of food that can be consumed, leading to decreased calorie intake.

Intestinal Bypass: In the second part of the surgery, the small intestine is rearranged to create a malabsorptive component. The surgeon divides the small intestine, rerouting it to form two separate pathways. The shorter pathway, called the common channel, allows food to mix with digestive enzymes and bile, while the longer pathway carries digestive juices further downstream. This arrangement reduces the absorption of calories and nutrients from food.

The combination of sleeve gastrectomy and intestinal bypass in the duodenal switch surgery restricts the amount of food intake and reduces the absorption of calories and nutrients, leading to significant weight loss.

Duodenal switch surgery is known for its ability to produce substantial weight loss and provide favorable outcomes for individuals with severe obesity. It offers both restrictive and malabsorptive effects, making it one of the most effective bariatric procedures for long-term weight loss. However, it is a more complex surgery and carries a higher risk of complications compared to other bariatric procedures.

As with any bariatric surgery, duodenal switch surgery requires careful consideration, evaluation, and consultation with a healthcare professional. It is essential to thoroughly discuss the potential risks, benefits, and long-term implications of the surgery before making a decision. Regular follow-up appointments, lifestyle modifications, and adherence to dietary guidelines are crucial for successful outcomes after duodenal switch surgery.


woman coming to doctor for duodenal treatment

What Is The Complications in Duodenal Switch Surgery?

Duodenal switch surgery, also known as biliopancreatic diversion with duodenal switch (BPD-DS), is a complex weight loss surgery that involves two components: a sleeve gastrectomy to reduce stomach size and a bypass of a significant portion of the small intestine. While it can be an effective procedure for long-term weight loss, it also carries potential complications. It’s important to consult with a healthcare professional for accurate and personalized information. Here are some possible complications associated with duodenal switch surgery:

Nutritional deficiencies: Due to the bypass of a large portion of the small intestine, individuals who undergo duodenal switch surgery may be at a higher risk of developing nutritional deficiencies. These can include deficiencies in vitamins (such as vitamin D, vitamin B12, and folate) and minerals (such as iron, calcium, and zinc). Lifelong supplementation and close monitoring of nutrient levels are typically necessary.

Dumping syndrome: Dumping syndrome can occur after duodenal switch surgery, especially when high-sugar or high-fat foods are consumed. It involves rapid emptying of stomach contents into the small intestine, leading to symptoms such as nausea, vomiting, diarrhea, abdominal cramps, lightheadedness, and sweating.

Malabsorption-related complications: The bypassed portion of the small intestine can result in malabsorption of nutrients, which can contribute to complications such as diarrhea, steatorrhea (fatty stools), excessive gas, and bloating.

Stomal stenosis: Stomal stenosis refers to a narrowing of the connection (stoma) between the stomach and the small intestine. It can lead to symptoms such as difficulty swallowing, food intolerance, nausea, and vomiting. Further surgical intervention may be required to address this complication.

Internal hernias: Internal hernias can occur after duodenal switch surgery, where a loop of the small intestine becomes trapped or twisted within the abdominal cavity. This can cause bowel obstruction, which may require emergency surgery.

Gallstones: Rapid weight loss after duodenal switch surgery can increase the risk of gallstone formation. These can lead to symptoms such as abdominal pain, nausea, and vomiting. In some cases, gallbladder removal surgery (cholecystectomy) may be necessary.

Wound infections: As with any surgical procedure, there is a risk of wound infections at the incision sites. Prompt medical attention and appropriate management can help mitigate this risk.

Thromboembolism: Surgery, in general, carries a risk of developing blood clots in the legs (deep vein thrombosis) or lungs (pulmonary embolism). Preventive measures such as early ambulation, compression devices, and blood-thinning medications are typically employed to minimize this risk.

It’s important to remember that these complications are potential risks associated with duodenal switch surgery, but not everyone will experience them. The overall success and safety of the procedure depend on various factors, including the individual’s overall health, adherence to post-operative guidelines, and the experience and skill of the surgical team. Consulting with a qualified healthcare professional can provide you with more accurate and personalized information based on your specific situation.

Top Best Dueodenal Clinics

Apera Health Group

Apera Health Group is a renowned health tourism organization that specializes in bariatric surgery and has received accreditation from prominent healthcare institutions worldwide. With an impressive record of 50,000 satisfied patients, Apera Health Group operates numerous healthcare centers in Turkey and Europe.

Situated in the heart of Turkey, Apera Prime Hospital in Istanbul offers a comprehensive range of treatments and services. Apera ensure a seamless experience for Apera patients by providing transfers between the airport, hotel, and hospital using our luxurious VIP fleet. Apera transportation services comply with both local and international regulations, establishing a foundation of trust with Apera patients.


Namık Yılmaz Clinic Antalya

Namık Yılmaz Obesity Surgery is a renowned medical facility located in the beautiful city of Antalya, Turkey. The clinic offers world-class services to patients from all over the globe, boasting a team of experienced doctors who are proficient in foreign languages. Antalya, easily accessible through direct flights from various European and Asian countries, serves as an ideal location for the clinic.

Namık Yılmaz Obesity Surgery ensures a seamless experience for its patients by providing airport transfers, arranging accommodations, and delivering precise and successful treatment. The clinic’s dedicated guides are readily available to assist patients and their families, ensuring a healthy and pleasant journey back home.

Led by the esteemed medical professional, Surgeon Namık Yılmaz, the clinic specializes in Bariatric Surgery and has achieved significant success both in Turkey and Europe. Patients can expect a safe and comfortable treatment under the expert supervision of Surgeon Namık Yılmaz.


Assoc Dr. Umut Rıza Gündüz

After completing a challenging educational process at Cerrahpaşa Medical Faculty and starting my General Surgery Assistantship at Okmeydanı Training and Research Hospital in 2005, I became a General Surgery Specialist in 2010. Throughout my assistantship in general surgery, I participated in numerous surgeries and performed a great number of operations. My interest and passion for laparoscopic surgery developed during my assistantship.

During my over 10-year tenure at Antalya Training and Research Hospital, I mainly focused on cancer and obesity surgeries. I aimed to perform more laparoscopic surgeries. Additionally, I received domestic and international training in obesity surgery, robotic surgery, and advanced endoscopic procedures. My fascination with technology increased my enjoyment of robotic surgery, laparoscopic surgery, and advanced endoscopic applications.

My curiosity about medical literature gradually led me from reading scientific articles to the stage of writing them. Together with my colleagues and fellow resident doctors, I have contributed to numerous medical articles. By writing and contributing to medical articles, I successfully passed the first stage of my Associate Professorship application and obtained the title of Associate Professor in November 2017.

As a clinical training instructor, I have performed numerous specialized surgeries and had the opportunity to contribute to the education of my fellow resident doctors. In August 2021, due to personal reasons, I had to leave Antalya Training and Research Hospital where I worked with pleasure. In the same year, I started working at Özel Termessos Hospital. While primarily focusing on obesity and metabolic surgeries, I also continue to perform oncological surgeries. Professionally, it makes me happy to enhance my interest in laparoscopic surgery in the field of obesity and metabolic surgery.

With the support of the management at Özel Termessos Hospital, we have made significant progress in health tourism within a year. I am grateful to the management of Özel Termessos Hospital and all its employees for this. As of September 2022, I was honored with a position on the Board of Directors and became a Manager at Özel Termessos Hospital where I have been working. Although I have moved to my private clinic, I continue to perform my surgeries at Özel Termessos Hospital.


Op. Dr. Feridun Elmas

Dr. Feridun Elmas, born in Konya, is a highly experienced plastic, reconstructive, and aesthetic surgeon. He pursued his education at Istanbul Marmara University Faculty of Medicine after completing his primary education in Konya’s Ereğli district and high school education at Science High School. During his time at university, he had the opportunity to observe neurogenetic laboratory studies at Yale University School of Medicine, renowned as one of the world’s top universities. Dr. Elmas gained valuable experience by performing numerous surgeries while specializing in Plastic, Reconstructive, and Aesthetic Surgery at Ankara Dış Kapı Yıldırım Beyazıt Training and Research Hospital. He actively participated in various congresses, workshops, and conferences, presenting his work and publishing in national and international journals. Following the completion of his residency, Dr. Elmas fulfilled his state service obligation by working in Burdur, where he performed plastic surgery procedures on both domestic and international patients.

Dr. Feridun Elmas is a proud member of esteemed organizations such as ISAPS (The International Society of Plastic Surgery), Turkish Plastic Reconstructive and Aesthetic Surgery Association (TPRECD), and Aesthetic Plastic Surgery Association (EPCD). He currently welcomes patients at his private clinic in Antalya Konyaaltı, where he provides exceptional care and expertise in the field of plastic surgery.


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