Stomach Intestinal Pylorus-Sparing (SIPS) surgery is a type of weight-loss surgery. It was developed in 2013 by two U.S. surgeons, Daniel Cottam^[1] from Utah and Mitchell S. Roslin from New York.^[2]

It is substantively the same procedure as the SADI surgery.

SIPS surgery is a modified version of duodenal switch (DS) surgery. The SIPS surgery involves the creation of a 300-cm common channel with a single-anastomosis duodenal enterostomy.

External image
SIPS Surgery Image

1. Greater weight loss than sleeve gastrectomy (SG).
2. Greater weight loss than Roux-en-Y gastric bypass (RYGB).^{[citation needed]}
3. Weight loss is similar to DS.^{[citation needed]}
4. One of the best revision surgeries after failed RYGB, adjustable gastric banding (ABG), and SG.^{[citation needed]}
5. Better T2DM remission than RYGB and SG.^{[citation needed]}
6. Better cholesterol resolution than RYGB.^{[citation needed]}
7. No Roux limb side effects.^{[citation needed]}
8. Similar nutritional problems to RYGB and less than DS.^{[citation needed]}
9. Low risk of intestinal obstruction compared to RYGB and DS.^{[citation needed]}
10. No Dumping syndrome, unlike RYGB.^{[citation needed]}
11. No marginal ulcers, unlike RYGB.^{[citation needed]}

1. Long-term data are not available.
2. Procedure is still considered experimental in nature and not covered by insurance companies.
3. Malabsorptive procedure [needs closer nutritional follow-up].
4. <1% incidence of bile reflux.

SADI-S surgery

• Amit Surve, MD, Hinali Zaveri, MD, Daniel Cottam, MD, Christina Richards, MD, FACS, Walter Medlin, MD, FACS, Austin Cottam. Laparoscopic Stomach Intestinal Pylorus Sparing Surgery in a Patient with Morbid Obesity and Situs Inversus; First Video Case Report. Surg Obes Relat Dis. 2016. (Article in Press)
• Surve, A.; Zaveri, H.; Cottam, D. (2016). "A video case report of stomach intestinal pylorus sparing surgery with laparoscopic fundoplication: A surgical procedure to treat gastrointestinal reflux disease in the setting of morbid obesity". Surgery for Obesity and Related Diseases. 12 (5): 1133–1135. doi:10.1016/j.soard.2016.04.001. PMID 27317604.
• Zaveri, H.; Surve, A.; Cottam, D.; Richards, C.; Medlin, W.; Belnap, L.; Cottam, S.; Cottam, A. (2015). "Stomach intestinal pylorus sparing surgery (SIPS) with laparoscopic fundoplication (LF): A new approach to gastroesophageal reflux disease (GERD) in the setting of morbid obesity". SpringerPlus. 4: 596. doi:10.1186/s40064-015-1396-6. PMC 4628040. PMID 26543731.
• Surve, A.; Zaveri, H.; Cottam, D.; Belnap, L.; Medlin, W.; Cottam, A. (2016). "Mid-term outcomes of gastric bypass weight loss failure to duodenal switch". Surgery for Obesity and Related Diseases. 12 (9): 1663–1670. doi:10.1016/j.soard.2016.03.021. PMID 27396548.
• Cottam, A.; Cottam, D.; Roslin, M.; Cottam, S.; Medlin, W.; Richards, C.; Surve, A.; Zaveri, H. (2016). "A Matched Cohort Analysis of Sleeve Gastrectomy with and Without 300 cm Loop Duodenal Switch with 18-Month Follow-Up". Obesity Surgery. 26 (10): 2363–9. doi:10.1007/s11695-016-2133-0. PMID 26992894. S2CID 19660687.
• Cottam, A.; Cottam, D.; Portenier, D.; Zaveri, H.; Surve, A.; Cottam, S.; Belnap, L.; Medlin, W.; Richards, C. (2017). "A Matched Cohort Analysis of Stomach Intestinal Pylorus Saving (SIPS) Surgery Versus Biliopancreatic Diversion with Duodenal Switch with Two-Year Follow-up". Obesity Surgery. 27 (2): 454–461. doi:10.1007/s11695-016-2341-7. PMID 27568033. S2CID 23644591.
• Surve, A.; Zaveri, H.; Cottam, D. (2016). "A safer and simpler technique of duodenal dissection and transection of the duodenal bulb for duodenal switch". Surgery for Obesity and Related Diseases. 12 (4): 923–924. doi:10.1016/j.soard.2016.02.022. PMID 27156009.
• Surve, A.; Zaveri, H.; Cottam, D. (2016). "Retrograde filling of the afferent limb as a cause of chronic nausea after single anastomosis loop duodenal switch". Surgery for Obesity and Related Diseases. 12 (4): e39–e42. doi:10.1016/j.soard.2016.01.018. PMID 27134196.
• Mitzman, B.; Cottam, D.; Goriparthi, R.; Cottam, S.; Zaveri, H.; Surve, A.; Roslin, M. S. (2016). "Stomach Intestinal Pylorus Sparing (SIPS) Surgery for Morbid Obesity: Retrospective Analyses of Our Preliminary Experience". Obesity Surgery. 26 (9): 2098–2104. doi:10.1007/s11695-016-2077-4. PMID 26932811. S2CID 7737567.
• Cottam, A.; Cottam, D.; Medlin, W.; Richards, C.; Cottam, S.; Zaveri, H.; Surve, A. (2016). "A matched cohort analysis of single anastomosis loop duodenal switch versus Roux-en-Y gastric bypass with 18-month follow-up". Surgical Endoscopy. 30 (9): 3958–64. doi:10.1007/s00464-015-4707-7. PMID 26694182. S2CID 27911781.
• Summerhays, C.; Cottam, D.; Cottam, A. (2016). "Internal hernia after revisional laparoscopic loop duodenal switch surgery". Surgery for Obesity and Related Diseases. 12 (1): e13-5. doi:10.1016/j.soard.2015.08.510. PMID 26433641.