Schulich school of Medicine and Dentistry logo Gastroenterology Schulich School of Medicine & Dentistry

Michael Sey

Michael Sey

Contact Information

Room E6-320, Victoria Hospital
800 Commissioners Road East
London, ON  N6A 5W9
Tel: 519.667.6582
Fax: 519.667.6820

Research Interests/Specializations

Double balloon enteroscopy
Capsule endoscopy
Endoscopic mucosal resection/submucosal dissection
Endoscopic ultrasound
Gastrointestinal bleeding
Screening colonoscopy/bowel preparation

Dr. Michael Sey is an Assistant Professor of Medicine at Western University, a Clinician Researcher in the Program for Experimental Medicine, and an Associate Scientist at the Lawson Health Research Institute.  He completed his MD at the University of Toronto and his Internal Medicine and Gastroenterology residencies at Western University. Dr. Sey trained in Advanced Endoscopy at Indiana University Medical Centre, Clinical Trials development at Harvard Medical School, and completed a Master of Public Health at Harvard University. Currently, he is the Program Director for the Advanced Luminal Endoscopy Fellowship and the Regional Endoscopy Lead for Cancer Care Ontario. His clinical interests include double balloon enteroscopy, capsule endoscopy, endoscopic ultrasound, and endoscopic mucosal resection/submucosal dissection. His research focuses on gastrointestinal bleeding, small bowel endoscopy, and colon cancer screening.

Selected Publications

Oakland K, Kothiwale S, Forehand T, Jackson E, Bucknall C, Sey M, Singh S, Jairath V, Perlin JB.  External validation of the Oakland score for acute lower gastrointestinal bleeding.  Accepted to JAMA Network Open.

Barkun A, Bardou M, Martel M, Epstein I, Halle P, Hilsden R, James PD, Rostom A, Sey M, Singh H, Sultanian R, Telford J, Von Renteln D.  The Bowel CLEANsing National Initiative (BCLEAN): A Low-Volume Same-day Polyethylene Glycol (PEG) Preparation versus Low-Volume Split-Dose PEG with Bisacodyl or High-Volume Split-Dose PEG Preparations – A randomized controlled trial.  Accepted to American Journal of Gastroenterology.

Alageeli M, Yan B, Alshankiti S, Al-Zahrani M, Bahreini Z, Dang T, Friedland J, Gilani S, Homenauth R, Houle J, Kloc M, Luhoway J, Merotto L, Rofaiel R, Singh C, Smith A, Thomas B, Townsend C, Yoo D, Zepeda-Gomez S,  Stitt L, Jairath V, Sey M.  KODA score: an updated and validated bowel preparation scale for patients undergoing small bowel capsule endoscopy.  Accepted in Endoscopy International Open.

Al-Judaibi B, Alqalami I, Sey M, Qumosani K, Howes N, Chandok N, Eddin A, Hernandez-Alejandro R, Marotta P, Teriaky A. Exercise training for liver transplant candidates. Transplant Proc. 2019 Nov 12. pii: S0041-1345(19)31026-7. doi: 10.1016/j.transproceed.2019.08.045. [Epub ahead of print]

Al DraiweeshS, Ma C, Alkhattabi M, McDonald C, Nguyen T, Beaton M, Chande N, Colquhoun P,  Feagan B, Gregor J, Khanna R, Marotta P, Ponich T, Quan D, Qumosani K, Sandhu A, Sey M, Skaro A, Teriaky A, Wilson A, Yan B, Brahmania M, Jairath V. Safety of combination biologic and anti-rejection therapy post-liver transplantation in patients with IBD. Inflamm Bowel Dis. 2019 Oct 28. pii: izz244. doi: 10.1093/ibd/izz244. [Epub ahead of print]

Sey M, Von Renteln D, Sultanian R, McDonald C, Martel M, Barkun A.  A study protocol for a multi-centre endoscopist blinded randomized clinical trial to compare two bowel preparations after a colonoscopy with inadequate cleansing.  BMJ Open. 2019;9:e029573.

Sey M, Yan B. Optimal management of the patient presenting with small bowel bleeding. Best Pract Res Clin Gastroenterol. 2019;42-43:101611. Review.

Rush B, Deol N, Teriyaki A, Sey M, Jairath V, Walley KR, Celi LA, Brahmania M. Lower 90-day hospital readmission rates for esophageal variceal bleeding after TIPS: a nationwide linked analysis. J Clin Gastroenterol. 2019;54:90-95.

Sey MS, Seid BM, Brahmania M, Singh Siddharth, Kahan BC, Jairath V. Comparative outcomes in patients with ulcer versus non-ulcer related acute upper gastrointestinal bleeding: a nationwide cohort of 4478 patients.  Aliment Pharmacol Ther 2019;49:537-45.

Oakland K, Kahan BC, Guizzetti L, Martel M, Bryant RV, Brahmania M, Singh S, Nguyen N, Sey MSL, Barkun A, Jairath V.  1.  Development, Validation, and Comparative Assessment of an International Scoring System to Determine Risk of Upper Gastrointestinal Bleeding.  Clin Gastroenterol Hepatol. 2019;17:1121-29.

Kherad O, Restellini S, Martel M, Sey M, Murphy M, Oakland K, Barkun A, Jairath V. Outcomes following restrictive or liberal red blood cell transfusion in patients with lower gastrointestinal bleeding. Aliment Pharmacol Ther. 2019;49:919-25.

Ufere N, Brahmania M, Sey M, Teriaky A, El-Jawahri A, Walley K, Celi L, Chung R, Rush B. Poor outcomes of in-hospital cardiopulmonary resuscitation for patients with end-stage liver disease. Liver Int. 2019;39:1256-62

Bougie O, Zuckerman SL, Switzer N, How J, Sey M. Influence of Resident Involvement in Obstetrics and Gynaecology Surgery on Surgical Outcomes: Systematic Review and Meta-Analysis.  J Obstet Gynaecol Can 2018;17: 30973-8.

Zhu CN, Friedland J, Yan B, Wilson A, Gregor J, Jairath V, Sey M.  Presence of Melena in Obscure Gastrointestinal Bleeding Predicts Bleeding in the Proximal Small Intestine.  Dig Dis Sci 2018;63:1280-1285.

Wilson A, Jansen LE, Rose RV, Gregor JC, Ponich T, Chande N, Khanna R, Yan B, Jairath V, Khanna N, Sey M, Beaton M, McIntosh K, Teft WA, Kim RB. Predicting azathioprine-associated pancreatitis in IBD-phenotype or genotype? Aliment Pharmacol Ther 2018;47:1044-1045.

Ing EB, Ing R, Liu X, Zhang A, Torun N, Sey M, Pagnoux C.  Does herpes zoster predispose to giant cell arteritis: a geo-epidemiologic study.  Clin Ophthalmol 2018;12:113-118.

Wilson A, Jansen L, Rose R, Gregor J, Ponich T, Chande N, Khanna R, Yan B, Jairath V, Khanna N, Sey M, Beaton M, McIntosh K, Teft W, Kim R.  HLA-DQA1-HLA-DRB1 polymorphism is a major predictor of azathioprine-induced pancreatitis in patients with inflammatory bowel disease.  Aliment Pharmacol & Ther.  2018;47:615-620.

Sey M, Gregor H, Gregor J, Yan B. Insertion of percutaneous endoscopic gastrostomy tubes with jejunal extensions (PEG-J) using the wedge technique – a novel method to prevent retrograde tube migration into the stomach.  Endoscopy. 2017;49:1251-55.

Yan BM, Feagan B, Teriaky A, Mosli M, Mohamed R, Williams GS, Yeung E, Yong E, Haig A, Sey M, Stitt L, Zou GY, Jairath V. Reliability of EUS indices to detect inflammation in ulcerative colitis. Gastrointest Endosc. 2017;86:1079-87.

Sey M, Liu A, Asfaha S, Siebring V, Jairath V, Yan B. Performance report cards increase adenoma detection rate.  Endosc Int Open. 2017 Jul;5(7):675-682.

Sey M, Al-Haddad M, Imperiale T, McGreevy K, Lin J, DeWitt J.  Endoscopic ultrasound guided liver biopsy for parenchymal disease: a comparison of diagnostic yield between two core biopsy needles.  Gastrointestinal Endoscopy. 2016;83:347-52.

Sey M, Teagarden S, Settles D, Al-Haddad M, LeBlanc JK, McGreevy K, Cote G, Sherman S, McHenry L, DeWitt J. Prospective cross sectional study of the prevalence of pancreatic cysts during routine outpatient endoscopic ultrasound. Pancreas. 2015;44:1130-3.

Sey M, Higgins L, DeWitt J, Lassisi A, Juan M, Sherman S, McHenry L, Imperiale T, LeBlanc JK. Effectiveness and safety of serial endoscopic ultrasound-guided celiac plexus block and neurolysis for chronic pancreatitis and cancer-related pain.  Endoscopy Int Open. 2015;3:E56-9.

Nakanishi Y, Mneimneh W, Sey M, Al-Haddad M, DeWitt J, Saxena R. One hundred thirteen consecutive transgastric liver biopsies for hepatic parenchymal diseases: a single-institution study. American Journal of Surgical Pathology. 2015;39:968-76.

Sey M, DeWitt J, Al-Haddad M. EUS in Pancreatic Tumors.  In: ERCP and EUS: A Case Based Approach. Springer Publishing; 2015.

Luz L, Sey M, Al-Haddad M, DeWitt J. Application of EUS in pancreatic cancer. World J Gastroenterol. 2014;29:7808-18.

Lam MCW, Sey M, Gregor J, Wong C.  Follow-up on 2006-2012 participants of the Canadian Association of Gastroenterology Scholars’ Program. Can J Gastroenterol Hepatol. 2014;28:94-96.

Sey M, DeWitt J. A ‘tuft’ procedure. Endoscopy. 2013;45:E375.

Sey M. Bariatric Surgery for the Gastroenterologist. In: Thomson ABR, Chande N (Eds). Medical Mini Review Series in Gastroenterology and Hepatology: Efficient Refresher for the Busy Clinical Gastroenterologist. CAPstone Publishing; 2013.

Sey M, Gregor J, Chande N, Ponich T, Bhaduri M, Lum PA, Zaleski W, Yan B. Diagnostic accuracy of bowel ultrasound in inflammatory bowel disease: A North American perspective.  J Ultrasound Med. 2013;32:1413–1417.

Sey M, Gregor J, Adams P, Khanna N, Vinden C, Driman D, Chande N. Wait times for diagnostic colonoscopy among outpatients with colorectal cancer: A comparison with Canadian Association of Gastroenterology targets. Can J Gastroenterol. 2012;26:894-896.

Sey M, Parfitt J, Gregor J. Prospective study of clinical and histological safety of pure and uncontaminated Canadian oats in the management of celiac disease. JPEN J Parenter Enteral Nutr. 2011;35:459-64.

Gregor J, Sey M. Celiac Disease. In: McDonald JWD, Burroughs AK, Feagan BG, Fennerty B (Eds.), Evidence Based Gastroenterology and Hepatology (3rd ed.). Oxford: Wiley-Blackwell Publishing; 2010.