Dr. Muhammed Taha DEMİRPOLAT

Doctor Information

• August 2017 – September 2021, Umraniye Training and Research Hospital, Department of General Surgery, Residency in General Surgery
• August 2016 – August 2017, Cukurova University Balcalı Hospital / Department of General Surgery, Residency in General Surgery
• 2006 – 2012 Fırat University Medical School / Elazıg / Turkey

Areas of Expertise

• Bariatric Surgery
• Metabolic (Diabetes) Surgery
• Laparoscopic Gastric Cancer Surgery
• Laparoscopic Colorectal Cancer Surgery
• Laparoscopic Anti-Reflux Surgery
• Laparoscopic Hernia Surgery
• Laparoscopic Cholecystectomy (Gallbladder Surgery)
• Thyroid Surgery

Professional Experiences

• 2025 April – Current, Altinbas Medical Park University Hospital, Department of General Surgery, Istanbul / Türkiye, Current
• Associate Professor of General Surgery since January 2025
• October 2021 – March 2025, Umraniye Training and Research Hospital, Department of General Surgery, General Surgery Specialist
• August 2016 – August 2021, Umraniye Training and Research Hospital, Department of General Surgery, General Surgery Resident
• March 2013 – July 2016 Sungurlu State Hospital /Emergency Doctor / Corum / Turkey

Publications

BARIATRIC
SCI / SCIE

1. Ozel Y, Kara YB, Yardimci S, Demirpolat MT. Omentopexy Can Prevent Postoperative Nausea and Vomiting after Laparoscopic Sleeve Gastrectomy. Bariatric Surgical Practice and Patient Care . 2026;0(0). doi: 10.1177/2168023X261423763
2. Demirpolat MT, Islam MM, Bacaksız ME, Şişik A, Kermansaravi M. Comparison of Mid- and Long-term Outcomes of Antrum-Resecting Versus Antrum-Preserving Laparoscopic Sleeve Gastrectomy. Obes Surg. 2025 Nov 7. doi: 10.1007/s11695-025-08354-x. Epub ahead of print. PMID: 41201754.
3. Demirpolat MT, Celikkaya MO, Ertekin SC, Basak F, Sisik A. Efficacy of ursodeoxycholic acid in reducing the necessity of cholecystectomy due to pre-existing and subsequently formed gallstones in patients who underwent laparoscopic sleeve gastrectomy. BMC Surg. 2025 Jan 17;25(1):30. doi: 10.1186/s12893-025-02767-2. PMID: 39825346; PMCID: PMC11742227.
4. Sonmez A, Bayram F, Banli O, Demirci I, Kiyici S, Kucuk Yetgin M, Bayraktaroglu T, Akbas F, Coskun H, Ocakli S, Aksakal N, Demirpolat MT, Yardimci S, Cay F, Kocamaz GY, Yazici D, Sevim O, Karabacak H, Altun H, Sahin Alak ZY, Iseri C, Cingi A, Ozguc H, Avsar FM, Taskin M, Erdem NZ, Sumer A, Cesur M, Taskin EH, Yumuk VD. TÜRKIYE CONSENSUS REPORT ON THE MULTIDISCIPLINARY OBESITY TREATMENT IN ADULTS. Obes Facts. 2025 Apr 3:1-35. doi: 10.1159/000545605. Epub ahead of print. PMID: 40179846.
5. Ertekin SC, Onsal U, Turgut E, Akyol H, Unver M, Demirpolat MT, Akbulut G. A Comparative Analysis of the Liver Retraction with Long Surgical Gauze in Three-Port Sleeve Gastrectomy and the Four-Port Nathanson Retractor Technique. Obes Surg. 2025 Jan 7. doi: 10.1007/s11695-024-07663-x. Epub ahead of print. PMID: 39775390.
6. Dobbie LJ, Birney S, Breen C, Bryant S, Clare K, Ciudin A, Felsenreich DM, Halford JCG, Heneghan H, Lorenzo ND, Mooney V, Parmar C, O'Connell J, O'Malley G, Woodward E, Yumuk VD, Peterli R, McGowan B; BMT Consensus Group. European recommendations from healthcare professionals and people living with obesity on safe practice for bariatric and metabolic surgery medical tourism: a modified Delphi consensus statement from EASO, IFSO-EC, and ECPO. Int J Surg. 2025 Feb 1;111(2):1711-1723. doi: 10.1097/JS9.0000000000002171. PMID: 39705126.
7. Felsenreich DM, Dantas ACB, Shahabi S, Abdelbaki TN, Zakeri R, Nagy ME, Gero D, Ruiz-Úcar E, Dong ZY, Yang W, Jenkins M, Chiappetta S; Young-IFSO Collaborative Group. Correction: Young-IFSO Endoscopy Training and Education Survey. Obes Surg. 2025 Jul;35(7):2506-2509. doi: 10.1007/s11695-025-07977-4. Erratum for: Obes Surg. 2025 Jul;35(7):2498-2505. doi: 10.1007/s11695-025-07915-4. PMID: 40512420; PMCID: PMC12270950.
8. Demirpolat MT, Islam MM, Bacaksiz ME, Ertekin SC, Sisik A. Comparison of Early Postoperative Outcomes of Omentopexy and Clips along the Staple Line During Laparoscopic Sleeve Gastrectomy: A Randomized Study. Obes Surg. 2024 Nov;34(11):4116-4124. doi: 10.1007/s11695-024-07543-4. Epub 2024 Oct 12. PMID: 39395146.
9. Demirpolat MT, Şişik A. Effectiveness of the Modified Hemoglobin, Albumin, Lymphocyte, and Platelet Score in Predicting Weight Loss After Laparoscopic Sleeve Gastrectomy. J Laparoendosc Adv Surg Tech A. 2024 Jan;34(1):61-66. doi: 10.1089/lap.2023.0333. Epub 2023 Oct 25. PMID: 37878772.
10. Demirpolat MT, İslam MM. Development and Validation of the GAASThyriC Model for Predicting Patients with Suboptimal Clinical Response After Laparoscopic Sleeve Gastrectomy and a Practical Calculator: A Retrospective Cohort Study. Surg Laparosc Endosc Percutan Tech. 2024 Jun 20. doi: 10.1097/SLE.0000000000001300. Epub ahead of print. PMID: 38898798.
11. Başak F, Şişik A, Demirpolat MT, Çalişkan YK, Ülgür HŞ. What Value of Sixth Month Excess Weight Loss (Postsleeve Gastrectomy) Is Necessary for Better Sleep Quality? Surg Laparosc Endosc Percutan Tech. 2023 Jun 1;33(3):270-275. doi: 10.1097/SLE.0000000000001174. PMID: 37172023.
12. Yildirak MK, Şişik A, Demirpolat MT. Comparison of Laparoscopic Sleeve Gastrectomy and Single Anastomosis Sleeve Ileal Bypass in Type 2 Diabetes Mellitus Remission Using International Criteria. J Laparoendosc Adv Surg Tech A. 2023 Aug;33(8):768-775. doi: 10.1089/lap.2023.0112. Epub 2023 May 8. PMID: 37155616.
13. Demirpolat MT, Şişik A, Yildirak MK, Basak F. Enhanced Recovery After Surgery Promotes Recovery in Sleeve Gastrectomy: A Randomized Controlled Trial. J Laparoendosc Adv Surg Tech A. 2023 May;33(5):452-458. doi: 10.1089/lap.2022.0494. Epub 2022 Dec 26. PMID: 36576984.
    ESCI, SCOPUS, Other index
14. Demirpolat MT, Şişik A. Effect of Laparoscopic Sleeve Gastrectomy on Thyroid Function Tests and Levothyroxine Doses in People with Obesity. Cureus 2024 16(3): e56219. doi:10.7759/cureus.56219
15. Demirpolat MT, İslam MM, Ceylan EM, Aykıt F, Satır M, Güvendir Bakkaloglu I, Bacaksız ME, Yücel M, Sisik A. Effect of Histopathological Findings of Gastric Specimens Resected During Laparoscopic Sleeve Gastrectomy on Weight Loss Success: A Retrospective Analysis of 599 Patients. Cureus. 2024 May 22;16(5): e60881. doi: 10.7759/cureus.60881. PMID: 38910773; PMCID: PMC11193679.
16. Demirpolat MT. Comparison of short-term results: Laparoscopic sleeve gastrectomy (LSG) vs laparoscopic roux-en-y gastric bypass (LRYGB). Laparosc Endosc Surg Sci . 2023; 30(4): 169-175. Doi: 10.14744/less.2023.72335
17. Demirpolat, Muhammed Taha; Islam, Mehmet Muzaffer. A Comparison of Laparoscopic Sleeve Gastrectomy and Laparoscopic Roux-En-Y Gastric Bypass for Changes in Lipid Profiles. Firat Med J 2024; 29(1): 46-50.
18. Demirpolat MT. The effect of bupivacaine on postoperative pain in patients who underwent laparoscopic sleeve gastrectomy. Laparosc Endosc Surg Sci . 2023; 30(3): 141-145. Doi: 10.14744/less.2023.04874
    OTHER
    SCI / SCIE
19. Demirpolat MT, İslam MM. Can inflammation indices derived from complete blood count be an alternative to diagnostic laparoscopy in predicting the presence of diaphragmatic injury in patients with left thoracoabdominal stab wounds? Curr Probl Surg. 2025 Mar;64:101720. doi: 10.1016/j.cpsurg.2025.101720. Epub 2025 Jan 13. PMID: 40057323.
20. Yucel, M., Demirpolat, M.T., Ezberci, F. Optimal Follow-up Time Before Discharge in Patients with Penetrating Anterior Abdominal Stab Wound Not Requiring Laparotomy. Indian J Surg (2024). https://doi.org/10.1007/s12262-024-04148-0
21. Demirpolat MT. An extremely unusual condition that leads to intestinal obstruction: Foramen Winslow hernia. Ulus Travma Acil Cerrahi Derg. 2023 Oct;29(10):1199-1202. doi: 10.14744/tjtes.2023.20940. PMID: 37791434; PMCID: PMC10644083.
22. Demirpolat MT, İslam MM. The role of neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, and systemic immune inflammation index in predicting the necessity for surgery and therapeutic surgery in patients with anterior abdominal stab wounds. World J Surg. 2024 Jun;48(6):1315-1322. doi: 10.1002/wjs.12177. Epub 2024 Apr 3. PMID: 38570898.
23. Access to and quality of elective care: a prospective cohort study using hernia surgery as a tracer condition in 83 countries. Lancet Glob Health. 2024 Jul;12(7): e1094-e1103. doi: 10.1016/S2214-109X (24)00142-6. Epub 2024 May 23. PMID: 38797188.
24. NIHR Global Health Research Unit on Global Surgery and the GlobalSurg Collaborative. Safety and equity in scaling minimally invasive surgery worldwide in 109 countries using cholecystectomy as a tracer procedure: a prospective cohort study. Lancet Glob Health. 2026 Feb;14(2):e199-e212. doi: 10.1016/S2214-109X(25)00476-0. PMID: 41519150.
25. NIHR Global Health Research Group on Environmentally Sustainable Hospitals in Low‐ and Middle‐income Countries. Global anaesthesia practice using inguinal hernia surgery as a tracer condition: a secondary analysis of an international prospective cohort study. Anaesthesia. 2025 Nov;80(11):1343-1351. doi: 10.1111/anae.16686. Epub 2025 Sep 9. PMID: 40923367; PMCID: PMC12519944.
26. Edmiston T, Bath MF, Caceres E, Nuño-Guzmán CM, Baderhabusha DU, Khajanchi M, Amoako J, Kohler K, Hashi AS, Carenzo L, Zhang Z, Marsden M, Saleh R, Hammer CC, Hobbs L, Smith BG, Hutchinson P, Weiser T, Perkins ZB, Hardcastle TC, Bashford T; GOAL-Trauma Collaborative. Variation in global trauma care: a survey of 187 hospitals across 51 countries. BMJ Glob Health. 2025 Nov 9;10(11):e021784. doi: 10.1136/bmjgh-2025-021784. PMID: 41213661; PMCID: PMC12598983.
27. Bath MF, Amoako J, Kohler K, Hashi AS, Zhang Z, Baderhabusha DU, Cáceres E, Nuño-Guzmán CM, Marsden M, Carenzo L, Khajanchi M, Saleh R, Edmiston T, Hammer C, Hobbs L, Smith BG, Hutchinson P, Weiser TG, Perkins ZB, Hardcastle TC, Bashford T; GOAL-Trauma Collaborative. Global variation in patient factors, interventions, and postoperative outcomes for those undergoing trauma laparotomy: an international, prospective, observational cohort study. Lancet Glob Health. 2025 Sep 16:S2214-109X(25)00303-1. doi: 10.1016/S2214-109X(25)00303-1. Epub ahead of print. PMID: 40972623.
28. Ng WH, Bath MF, Amoako J, Kohler K, Baderhabusha DU, Cáceres E, Nuño-Guzmán CM, Moonesinghe R, Hobbs L, Smith BG, Weiser TG, Hardcastle TC, Perkins ZB, Bashford T; GOAL-Trauma Collaborative. Use of pre-operative blood products in abdominal trauma: a planned secondary analysis of the GOAL-trauma study. EClinicalMedicine. 2026 Mar 4;93:103814. doi: 10.1016/j.eclinm.2026.103814. PMID: 41938841; PMCID: PMC13043316.
    ESCI, SCOPUS, Other index
29. Yasar Y, Demir M, Demirpolat MT, Tolan HK. Preoperative ultrasonographic predictors of conversion from laparoscopic to open cholecystectomy. Laparosc Endosc Surg Sci. 2025 32(4):234. doi.:10.14744/less.2025.24022
30. N Köksal, ÖF Özkan, E Ünal, İ Kabak, MT Demirpolat, G Kıran. Robotic Low Anterior Resection and TAH+ BSO with Transvaginal NOSE. Turk J Colorectal Dis 2021; 31:86-87.
31. Yucel M, Demirpolat MT, Yıldırak MK. Colorectal cancer screening; colonoscopy and biopsy results in people undergoing colonoscopy due to positive fecal occult blood test. Turk J Surg 2024; 40 (1): 59-64. doi:10.47717/turkjsurg.2024.6352.
32. Yıldırak MK, Demirpolat MT, Topcu A, Ulgur HS, Turan I, Kavas AD, Ozkan OF. Laser Hemorrhoidoplasty in a Grade 3 Hemorrhoidal Disease: A Video Presentation. Turkish Journal of Colorectal Disease; Vol. 31, Iss. 3, (Sep 2021): 279-280. DOI: 10.4274/tjcd.galenos.2021.
33. Yıldırak MK, Demirpolat MT, Topcu A, Ulgur HS, Turan I, Kavas AD, Ozkan OF. Doppler-Guided Hemorrhoidal Artery Ligation and Hemorrhoidopexy in a Grade 3 Hemorrhoidal Disease: A Video Presentation. Turkish Journal of Colorectal Disease, 2021, Vol 31, Issue 3, p277. DOI: 10.4274/tjcd.galenos.2021.2020-10-14.
34. Topcu, Ahmet, et al. "Seton Application in Complex Perianal Fistula: Video Presentation/Kompleks Perianal Fistülde Seton Uygulamasi: Video Sunum." Turkish Journal of Colorectal Disease , vol. 31, no. 1, Mar. 2021.
35. Unal E, Topcu A, Demirpolat MT, Özkan ÖF (2018) Viral Infections after Kidney Transplantation: An Updated Review. Int J Virol AIDS 5:040. doi.org/10.23937/2469-567X/1510040.
    Oral Presentation
36. 13 th Congress of the international federation surgery for obesity (IFSO) European chapter (2025), A Comparison of Intragastric Balloon Application (IGB) and Intragastric Botulinum Toxin A Injection (BTA) For Weight Loss and Sustainability
37. XXVI IFSO World Congress Napoli 2023, Enhanced Recovery After Surgery Promotes Recovery in Sleeve Gastrectomy: A Randomized Controlled Trial
38. 11th IFSO-EC 2023 Zurich. SCHOLARSHIP WINNER.
39. 15th Young IFSO Journal Club: Development and Validation of the GAASThyriC Model for Predicting Patients with Suboptimal Clinical Response After Laparoscopic Sleeve Gastrectomy and a Practical Calculator: A Retrospective Cohort Study
40. 12th National Congress of Trauma and Emergency Surgery (2019) [oral presentation] . Dıagnoses of Refugees Admıtted to Emergency General Surgery.
41. 12th National Congress of Trauma and Emergency Surgery (Turkey, 2019) [oral presentation] . Our Treatment Results in Lower Gastroıntestınal System Bleedıng.
42. 8th International Congress on Obesity and Metabolic Diseases Surgery (Turkey, 2023) [oral presentation]. Importance of Hıstopathologıc Examınatıon of Laparoscopıc Sleeve Gastrectomy Specımens.
43. 16th National & 3rd International Endoscopic, Laparoscopic & Robotic Surgery Congress (Turkey, 2023) [Oral Presentation]. Comparison of histopathologic results of pathology specimens in patients who underwent laparoscopic sleeve gastrectomy.
44. 4th International Congress of Obesity Surgery and Dietetics (Turkey, 2024). Gender-specific analysis of short-term surgical outcomes in patients who underwent laparoscopic sleeve gastrectomy.
45. XVIIth Turkish Colon and Rectal Surgery Congress (2019). Analysis of postoperative complications in patients who underwent loop ileostomy closure
    Video Presentations:
46. XXVI IFSO World Congress Napoli 2023 [video presentation], Staple Misfire During Sleeve to Rny Gastric Bypass Revision Surgery
    Book chapters :
47. Demirpolat, M.T., Sisik, A. (2025). Thyroid and Parathyroid Considerations. In: Gagner, M., Ramos, A.C., Palermo, M., Noel, P., Nocca, D. (eds) The Perfect Sleeve Gastrectomy. Springer, Cham. https://doi.org/10.1007/978-3-031-77690-8_62-1
48. Demirpolat MT. Recurrent inguinal hernias. Book chapter in Hernia Surgeries, 2022, 209-216. Eds: Mehmet Bayrak, Neval Sarioglu. Book Chapter in Turkish.
49. Demirpolat MT. Robotic repair of inguinal hernia. Book chapter in Hernia Surgeries, 2022, 209-216. Eds: Mehmet Bayrak, Neval Sarioglu. Book Chapter in Turkish.
50. Demirpolat MT, Tolan HK. Laparoscopic Vertical Sleeve Gastrectomy; Technique, Complication & Outcomes. Book Chapter in Theory and Research in Health Sciences, October 2022, Eds: Prof. Dr. Zeliha Selamoğlu, Prof. Dr. Hasan Akgül, Dr. Merve Öztürk.
    Speaker:
51. Obesity Winter School, January 16-17, Eskisehir, Strictures and Twists/Functional Strictures
52. 15 th Frankfurter Meeting, October 30-31 2025, [Speaker], Impact of GERD in Revisional Bariatric Surgery.
53. 126 th International Bariatric Club – University of Oxford Surgery Webinar (2025) [speaker], Correct Staple Cartridge Selection in Laparoscopic Sleeve Gastrectomy
54. Obesity week congress (Turkey 2025) [speaker], Perioperative Bleeding.
55. 4th International Congress of Obesity Surgery and Dietetics (Turkey, 2024) [Speaker]. Laparoscopic Bariatric Surgery in Patients with Multiple Operations.
56. 8th International Congress on Obesity and Metabolic Diseases Surgery (Turkey, 2023) [Speaker]. Roux-En-Y Gastritis Bypass During Intraoperative Heparin Therapy.
57. 9th International Congress on Obesity and Metabolic Diseases Surgery (Turkey, 2024). [Session Chair]. IF There Is No Follow-up, No Success, No Knowledge! After Bariatric Surgery...
58. 9th International Congress on Obesity and Metabolic Diseases Surgery (Turkey, 2024). [Speaker]. Heal Faster! Get up and run! ERASB in bariatric surgery
59. Become Bariatric Surgeon: Bariatric and Metabolic Surgery for Beginners (Turkey 2024). [Educator]. Step by Step Laparoscopic Roux-en-Y Gastric Bypass