Dr. Sebastian Demyttenaere

Academic title(s): 

Assistant Professor of Surgery

Dr. Sebastian Demyttenaere
Contact Information
514-345-3511, ext. 6373
Email address: 
sebastian.demyttenaere [at] mcgill.ca

Dr. Sebastian Demyttenaere joined the Division of General Surgery at McGill University as an Assistant Professor of Surgery in 2009. His clinic focus is on Bariatric Surgery at the MUHC and also minimally invasive general surgery at Saint Mary’s Hospital. He also is involved in surgical education at the undergraduate and postgraduate level.

Dr. Demyttenaere completed his General Surgery Residency at McGill University during which time he also completed a MSc in Experimental Surgery. He then completed a one-year Fellowship in Advanced Minimally Invasive and Bariatric Surgery at the Ohio State University, Ohio. He is a member of multiple national and international associations including the American Society for Metabolic and Bariatric Surgery (ASMBS) and the International Federation for the Surgery of Obesity (IFSO). He is also a member of the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES).

Montreal General Hospital (MGH)
St. Mary's Hospital
General surgery
E16 165.A
Selected publications: 

1: Kurashima Y, Feldman LS, Kaneva PA, Fried GM, Bergman S, Demyttenaere SV, Li
C, Vassiliou MC. Simulation-based training improves the operative performance of
totally extraperitoneal (TEP) laparoscopic inguinal hernia repair: a prospective
randomized controlled trial. Surg Endosc. 2014 Mar;28(3):783-8. doi:
10.1007/s00464-013-3241-8. Epub 2013 Oct 23. PubMed PMID: 24149850.

2: Tahiri M, Sikder T, Maimon G, Teasdale D, Hamadani F, Sourial N, Feldman LS,
Guralnick J, Fraser SA, Demyttenaere S, Bergman S. The impact of postoperative
complications on the recovery of elderly surgical patients. Surg Endosc. 2016
May;30(5):1762-70. doi: 10.1007/s00464-015-4440-2. Epub 2015 Jul 21. PubMed PMID:

3: Andalib A, Elbahrawy A, Alshlwi S, Alkhamis A, Hu W, Demyttenaere S, Aggarwal
R, Court O. Diabetic Ketoacidosis Following Bariatric Surgery in Patients With
Type 2 Diabetes. Diabetes Care. 2016 Aug;39(8):e121-2. doi: 10.2337/dc16-0280.
Epub 2016 May 10. PubMed PMID: 27208337.

4: Alshlwi S, Elbahrawy A, Alamri H, Najmeh S, Aggarwal R, Demyttenaere S, Court
O, Andalib A. Laparoscopic Transgastric Resection of a Gastric Submucosal Tumor
near Esophagogastric Junction with Concomitant Sleeve Gastrectomy: a Video Case
Report. Obes Surg. 2017 Feb;27(2):552-553. doi: 10.1007/s11695-016-2450-3. PubMed
PMID: 27815864.

5: Sikder T, Maimon G, Sourial N, Tahiri M, Teasdale D, Bernier P, Fraser SA,
Demyttenaere S, Bergman S. Assessing the Effect of Preoperative Nutrition on
Upper Body Function in Elderly Patients Undergoing Elective Abdominal Surgery.
JPEN J Parenter Enteral Nutr. 2017 Apr 1:148607117703956. doi:
10.1177/0148607117703956. [Epub ahead of print] PubMed PMID: 28406753.

6: Elbahrawy A, Bougie A, Albader M, Aggarwal R, Demyttenaere S, Andalib A, Court
O. Laparoscopic Wedge Resection of Gastrojejunostomy for Weight Recidivism after
Gastric Bypass. Obes Surg. 2017 Nov;27(11):2829-2835. doi:
10.1007/s11695-017-2706-6. PubMed PMID: 28470487.

7: Elbahrawy A, Bougie A, Loiselle SE, Demyttenaere S, Court O, Andalib A. Medium
to long-term outcomes of bariatric surgery in older adults with super obesity.
Surg Obes Relat Dis. 2018 Apr;14(4):470-476. doi: 10.1016/j.soard.2017.11.008.
Epub 2017 Nov 10. PubMed PMID: 29249586.

8: Andalib A, Bouchard P, Bougie A, Loiselle SE, Demyttenaere S, Court O.
Variability in Bariatric Surgical Care Among Various Centers: a Survey of All
Bariatric Surgeons in the Province of Quebec, Canada. Obes Surg. 2018
Aug;28(8):2327-2332. doi: 10.1007/s11695-018-3157-4. PubMed PMID: 29492752.

9: Sikder T, Sourial N, Maimon G, Tahiri M, Teasdale D, Bergman H, Fraser SA,
Demyttenaere S, Bergman S. Postoperative Recovery in Frail, Pre-frail, and
Non-frail Elderly Patients Following Abdominal Surgery. World J Surg. 2018 Sep
18. doi: 10.1007/s00268-018-4801-9. [Epub ahead of print] PubMed PMID: 30229382.

Clinical Interests: 

bariatrics, GI and hernia surgery, and endoscopy

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