Imperial College London


Faculty of MedicineDepartment of Surgery & Cancer

Clinical Senior Lecturer in Bariatric Surgery



+44 (0)20 3312 6962s.purkayastha Website




1022Queen Elizabeth the Queen Mother Wing (QEQM)St Mary's Campus





Sanjay Purkayastha is a General Surgeon with a specialist interest in Bariatric & Upper GI Surgery.

His research interests are varied and include surgical education especially digital mobile technologies, clinical research in Bariatric and Metabolic Surgery, assessing the health of heathcare organisations, single port laparoscopic surgery and surgical evidence synthesis.



Tharakan G, Scott R, Szepietowski O, et al., 2017, Limitations of the DiaRem Score in Predicting Remission of Diabetes Following Roux-En-Y Gastric Bypass (RYGB) in an ethnically Diverse Population from a Single Institution in the UK., Obes Surg, Vol:27, Pages:782-786

Erridge S, Sodergren MH, Darzi A, et al., 2016, Natural Orifice Translumenal Endoscopic Surgery: Review of Its Applications in Bariatric Procedures, Obesity Surgery, Vol:26, ISSN:0960-8923, Pages:422-428

Mason SE, Scott AJ, Mayer E, et al., 2016, Patient-related risk factors for urinary retention following ambulatory general surgery: a systematic review and meta-analysis, American Journal of Surgery, Vol:211, ISSN:0002-9610, Pages:1126-1134

Ponnusamy V, Owens AP, Purkayastha S, et al., 2016, Orthostatic intolerance and autonomic dysfunction following bariatric surgery: A retrospective study and review of the literature, Autonomic Neuroscience-basic & Clinical, Vol:198, ISSN:1566-0702, Pages:1-7


Erridge S, Ashraf H, Purkayastha S, et al., 2016, Through The Eyes of an Expert: A comparison of Surgeon Gaze Behaviours during Gastric Bypass, 19th Annual Scientific Meeting of the Association-of-Upper-Gastrointestinal-Surgeons-of-Great-Britain-and-Ireland, WILEY-BLACKWELL, Pages:15-15, ISSN:0007-1323

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