| Not Yet Recruiting | Dexmedetomidine Versus Ketamine as Adjuvants in Bariatric Surgery NCT06738043 | Tanta University | N/A |
| Not Yet Recruiting | Digital Follow-Up and Nursing Education in Bariatric Surgery Patients NCT07457034 | Okan University | N/A |
| Not Yet Recruiting | Transition to Ambulatory Bariatric Surgery (TABS) Trial NCT07011628 | Vanderbilt University Medical Center | N/A |
| Recruiting | Flow-Controlled Versus Volume-Controlled Ventilation in Bariatric Surgery NCT07430111 | Ankara Etlik City Hospital | N/A |
| Recruiting | Scalp Hair Metabolomics in Severe Obesity NCT07368842 | Singapore General Hospital | — |
| Recruiting | EFFECTS OF SUPERVISED PHYSICAL EXERCISE AFTER BARIATRIC SURGERY ON MUSCLE MASS AND BONE DENSITY (OBEFIT STUDY) NCT07324447 | Hospitales Universitarios Virgen del Rocío | N/A |
| Not Yet Recruiting | Predicting Weight Loss After Bariatric Surgery in Patients With Obesity NCT07402031 | Université Catholique de Louvain | — |
| Recruiting | Gastro-Intestinal Digestion and Physiology After Bariatric Surgery NCT07286968 | Universitaire Ziekenhuizen KU Leuven | — |
| Recruiting | Effects of Respiratory Muscle Training in Post-bariatric Surgery Patients NCT07289958 | University Ramon Llull | N/A |
| Not Yet Recruiting | Effect of Intraoperative Salbutamol Administration on Mechanical Power and Respiratory Mechanics in Obese Pati NCT07378605 | Saglik Bilimleri Universitesi Gazi Yasargil Training and Research Hospital | N/A |
| Recruiting | Intravenous Lidocaine Infusion Versus Intravenous Dexmedetomidine Infusion During Sleeve Gastrectomy NCT07327905 | Alexandria University | N/A |
| Enrolling By Invitation | Effects of the Dietary Inflammatory Index on Systemic Inflammation Markers and Gastrointestinal Symptoms in In NCT07293624 | Istanbul Bilgi University | — |
| Active Not Recruiting | BAR-TAX - Tranexamic Acid in Bariatric Surgery. NCT07401394 | Santa Maria Hospital - GVM Care & Research | N/A |
| Recruiting | Magnetic Compression Anastomosis Procedure for Partial Jejuno-ileal Diversion: Evaluating the Feasibility of a NCT07350967 | iIDEAS Group Holdings Limited | N/A |
| Recruiting | Impact of a Pro-diversity Gut Microbiota Diet After a Bariatric Surgery on Gut Microbiota, Eating Behaviour an NCT07268508 | Hospices Civils de Lyon | N/A |
| Completed | easyEndoTM Powered Stapler Study NCT07375017 | Ezisurg Medical Co. Ltd. | N/A |
| Not Yet Recruiting | Pelvic Floor Disorder Symptoms in Women Seeking Weight Loss Therapy NCT07175805 | Hartford HealthCare | — |
| Not Yet Recruiting | Effectiveness of a Modified Cost-Effective Dietary Plan in Promoting Weight Loss and Preservation of Lean Body NCT07111767 | Khyber Teaching Hospital | N/A |
| Not Yet Recruiting | Effect of CPAP Versus APAP in Patients With Obesity Undergoing Bariatric Surgery Protocol NCT07001215 | Hospital Universitario Ramon y Cajal | N/A |
| Not Yet Recruiting | The Improvement of Low-dose Esketamine on Postoperative Depression in Patients Undergoing Bariatric Surgery Wi NCT07179913 | The First Hospital of Jilin University | Phase 4 |
| Not Yet Recruiting | Proof of Concept in the Prevention of Post-bariatric Sarcopenia: Simulated Activation of the "Gravitostat" NCT07120685 | University Hospital, Clermont-Ferrand | N/A |
| Not Yet Recruiting | The Effect of Virtual Forest Bathing on Bariatric Surgery Patients NCT07152054 | Ataturk University | N/A |
| Not Yet Recruiting | The Effect of Guided Imagery on Bariatric Surgery Patients NCT07157826 | Ataturk University | N/A |
| Not Yet Recruiting | Opioid-Free Versus Opioid-Based Anesthesia in Bariatric NCT07105839 | Siirt Training and Research Hospital | Phase 4 |
| Completed | Relationship Between Eating Disorders, Anthropometric Characteristics, and Physical Activity After Bariatric S NCT07144553 | Dr. Lutfi Kirdar Kartal Training and Research Hospital | — |
| Not Yet Recruiting | The Effect of Encouraging Patients Undergoing Obesity Surgery to Move on Physical Mobility, Recovery and Negat NCT07068828 | TC Erciyes University | N/A |
| Completed | Effect of Education Given With Virtual Reality Glasses on Self-Care Ability of Patients After Bariatric Surger NCT07283432 | Ankara Yildirim Beyazıt University | N/A |
| Recruiting | Comparison of Nissen-Sleeve and Gastric Bypass for GERD in Obese Patients NCT07158008 | Jagiellonian University | N/A |
| Not Yet Recruiting | Impact of Weight Loss on Mitochondrial Function NCT07023133 | Towson University | — |
| Recruiting | Protein Supplementation and Resistance Training to Prevent Fat-Free Mass Loss Following Metabolic-Bariatric Su NCT07156552 | Radboud University Medical Center | N/A |
| Recruiting | Comparison of the Occurrence of Postoperative Complications Between Robotic and Laparoscopic Surgery in Revisi NCT07180316 | GCS Ramsay Santé pour l'Enseignement et la Recherche | — |
| Recruiting | Exercise to Fight Obesity NCT06934681 | Instituto de Investigacion Sanitaria La Fe | N/A |
| Recruiting | Indocyanine Green Fluorescence Angiography (ICG-FA) in Revisional Bariatric Surgery NCT07000539 | Instituto Mexicano del Seguro Social | N/A |
| Not Yet Recruiting | Identification of Pre-surgical Phenotypic Indicators Predictive of Quality of Life Trajectories in Obese Patie NCT06951893 | Centre Hospitalier Metropole Savoie | N/A |
| Completed | Impact of Collagen Supplements on Dermal Collagen in Plastic and Bariatric Surgery Patients NCT06787924 | General Committee of Teaching Hospitals and Institutes, Egypt | N/A |
| Recruiting | Simethicone as Part of ERAS in Bariatric Surgery Patients NCT06812832 | Madigan Army Medical Center | Phase 4 |
| Recruiting | Establishment of a Classification System and Postoperative Risk Warning Model for Patients Undergoing Bariatri NCT07093502 | The Third Xiangya Hospital of Central South University | — |
| Recruiting | 2024 Tirzepatide-Bariatric Surgery NCT06721507 | Marlene Starr | Phase 4 |
| Recruiting | Mechanistic and Clinical Outcomes of a Surgical Innovation Aimed at Minimizing GERD Associated With VSG (INNOV NCT06783751 | University of California, Irvine | N/A |
| Recruiting | Study on Supplement of Intravenous Ferric Derisomaltose to Prevent Anemia and Improve the Quality of Life in O NCT07236788 | China-Japan Friendship Hospital | N/A |
| Not Yet Recruiting | Periodontal Microbiota of Patients Candidates for Bariatric Surgery with Body Mass Index Greater Than 30 NCT06781229 | University Hospital, Toulouse | — |
| Not Yet Recruiting | Comparison of the Effect of Cyclizine Versus Metoclopramide on Gastric Residual Volume in Patients Undergoing NCT06789614 | Cairo University | — |
| Completed | Kinesiophobia and Pressure Sore Risk After Bariatric Surgery. NCT06780371 | Bitlis Eren University | N/A |
| Recruiting | Endoscopic Conversion of Sleeve Gastrectomy to Single Anastomosis Sleeve-ileal Bypass (SASI) for Gastroesophag NCT06757296 | Singapore Health Services | N/A |
| Recruiting | Monitoring Nutritional Consequences of Obesity Treatment on Women's Health NCT06945016 | Wageningen University and Research | — |
| Completed | Optimizing Fitness: Post Bariatric Surgery With Modified Qigong Breathing Exercise NCT06763718 | MTI University | N/A |
| Recruiting | Modified Thoracoabdominal Nerve Plane Block In Laparoscopic Sleeve Gastrectomy NCT06515691 | Istanbul Medipol University Hospital | N/A |
| Active Not Recruiting | Disordered Eating and Recurrent Weight Gain After MBS NCT07434557 | Medipol University | — |
| Recruiting | Implant-based Breast Reconstruction in Post-bariatric Women - a Registry-based National Study NCT07059104 | Vastra Gotaland Region | — |
| Recruiting | Monitoring Changes in Endotracheal Tube Cuff Pressure During Laparoscopic Bariatric Surgery NCT06738875 | Saglik Bilimleri Universitesi Gazi Yasargil Training and Research Hospital | — |
| Not Yet Recruiting | Post Bariatric Surgery Acute Kidney Injury: Incidence and Risk Factors NCT06697743 | Georgina Tharwat Abdelmasih | — |
| Active Not Recruiting | Glucagon Dose-Response in Patients With Post-Bariatric Hypoglycemia NCT06986603 | Joslin Diabetes Center | Phase 4 |
| Completed | The Incidence of Post-Operative Lung Atelectasis With Erector Spinae Plane Block in Bariatric Surgery: NCT06695858 | Kasr El Aini Hospital | Phase 3 |
| Recruiting | Oral Acetaminophen for Post-Op Pain Management in Bariatric Surgery Patients NCT06658574 | Rutgers, The State University of New Jersey | Phase 2 |
| Active Not Recruiting | One-Year Outcomes After Conversion Bariatric Surgery NCT07345429 | Medipol University | — |
| Completed | Comparison of the Analgesic Efficacy of Subcostal TAP and M-TAPA Blocks in Laparoscopic Sleeve Gastrectomy Sur NCT06934772 | Haseki Training and Research Hospital | — |
| Not Yet Recruiting | Gastroduodenal Intussusception: Two Cases of Gastroduodenal Intussusception Following Gastric Plication, Each NCT06667284 | Ibn Al Nafees Hospital | N/A |
| Recruiting | Physiologic Response to Bariatric Surgery and the Impact of Adjunct Semaglutide in Adolescents NCT06575738 | University of Colorado, Denver | Phase 1 |
| Active Not Recruiting | Evaluate the Efficacy and Safety of SASI Compared with RYGB in the Treatment of Obesity and Related Metabolic NCT06598267 | The Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School | N/A |
| Completed | Effects of Concurrent Aerobic and Resistance Training After Bariatric Surgery in Women: RCT NCT07537543 | Gazi University | N/A |
| Not Yet Recruiting | Risk Factors of Depression, Anxiety and Eating Disorder After Bariatric Surgery NCT06491069 | Sohag University | — |
| Completed | Validation of a Score for Supplementation Needs of Vitamins, Micronutrients and Proteins After Bariatric Surge NCT07268209 | Hospital Universitari de Bellvitge | — |
| Completed | SEMASEARCH, Retrospective/Prospective Cohort Nested at ATUc/AP2 WEGOVY® NCT05897398 | Hospices Civils de Lyon | — |
| Recruiting | Tailored Stapled SADI-S: Initial Report and Preliminary Results NCT07289555 | El-Sahel Teaching Hospital | N/A |
| Enrolling By Invitation | Reference Values for Gastric Emptying Scintigraphy After Bariatric Surgery NCT06391255 | Rijnstate Hospital | — |
| Completed | Hybrid Closed Loop Insulin Pump and Bariatric Surgery in Patients With Type 1 Diabetes NCT06294704 | Centre Hospitalier Sud Francilien | — |
| Recruiting | Recovering From Bariatric Surgery: the Effects of Early Initiated and Supervised Mobilization NCT06222151 | Esbjerg Hospital - University Hospital of Southern Denmark | N/A |
| Active Not Recruiting | Comparing Dumping Symptoms and Quality of Life 6 Months After Sleeve Gastrectomy With or Without Transit Bipar NCT07263269 | Mina Kamal Gergis Erian | N/A |
| Completed | The Efficacy of Thoracic Erector Spinae Plane Block For Perioperative Analgesia in Laparoscopic Bariatric Surg NCT06377605 | Amany Ahmed Eissa | N/A |
| Recruiting | Effects of Different Anesthesia Machine Modalities on Bariatric Surgery Patients: a Prospective Randomized Con NCT06547411 | Yu-Long Jia | N/A |
| Recruiting | Fecal Microbiota Transfer to Improve Diabetes Control Post-bariatric Surgery NCT06192693 | Assistance Publique - Hôpitaux de Paris | Phase 3 |
| Unknown | Post-bariatric Surgery Weaning With Food for Special Medical Purposes to Increase Patient Compliance. NCT06205017 | I.R.C.C.S Ospedale Galeazzi-Sant'Ambrogio | N/A |
| Recruiting | Radiomics of Intra-abdominal and Subcutaneous Adipose Tissue Predict the Efficacy of Bariatric Surgery (RISABS NCT06169033 | China-Japan Friendship Hospital | — |
| Completed | Study Effects of Preoperative Modafinil on Recovery Profile of Morbidly Obese Patients Scheduled for Bariatric NCT07128719 | Ain Shams University | N/A |
| Completed | Preoperative Toxicological Screening on Perioperative Anesthetic Management NCT07100314 | General Committee of Teaching Hospitals and Institutes, Egypt | — |
| Recruiting | National Emergency Bariatric Surgery Audit NCT06738004 | Bedfordshire Hospitals NHS Foundation Trust | — |
| Completed | Low-Volume Oral Carbohydrate Feeding in Bariatric Surgery: Effects on PONV and Recovery NCT07018440 | Marmara University | N/A |
| Completed | Predictors of Anesthesia Complications in Patients Undergoing Bariatric Surgery NCT06981793 | Centre Hospitalier de Gonesse | — |
| Completed | Opioid-Free vs Opioid-Based Anesthesia in Bariatric Surgery NCT07337135 | Hospital dos Lusíadas | N/A |
| Completed | Research on Timing of Liraglutide Therapy in Patients With Obesity After Metabolic Surgery NCT07374445 | The Affiliated Nanjing Drum Tower Hospital of Nanjing University Medical School | Phase 4 |
| Completed | Video Education on Bariatric Surgery Fear and Recovery NCT07509073 | Bursa Sevket Yilmaz Training and Research Hospital | N/A |
| Completed | Mobile Application for Bariatric Surgery Patients NCT05428618 | Akdeniz University | N/A |
| Completed | Lung Recruitment Manoeuvre in Morbidly Obese Patients Underdoing Laparoscopic Bariatric Surgery NCT06000969 | Tanta University | N/A |
| Unknown | Opioid-sparing Versus Sevoflurane Anesthesia on Early Postoperative Hypoventilation in Laparoscopic Bariatric NCT05962671 | Tanta University | Phase 4 |
| Unknown | Alveolar Recruitment Maneuvers on Reduction of Lung Atelectasis in Bariatric Surgery by Using Lung Ultrasound NCT05720351 | Tanta University | N/A |
| Recruiting | Role of Tranexamic Acid in Reducing Hemorrhagic Events in Bariatric Surgery NCT07098780 | Patel Hospital, Pakistan | Phase 4 |
| Unknown | Alcohol Consumption After Bariatric Surgery NCT06194175 | University of Liege | — |
| Recruiting | Lexion AP 50/30 Warmed Humidified Real Time CO2 Insufflation vs Airseal Recirculated CO2/Air Insufflation in M NCT05838300 | The University of Texas Health Science Center, Houston | N/A |
| Completed | Postoperative Hypoxemia in Obese Patients NCT06589011 | Theodor Bilharz Research Institute | N/A |
| Active Not Recruiting | Whole Body Vibration After Bariatric Surgery NCT05695599 | Universidad de Zaragoza | N/A |
| Completed | Patient Experience in Bariatric Surgery: Definition of New Indicators NCT05092659 | Centre Hospitalier Intercommunal Creteil | N/A |
| Withdrawn | Bariatric Embolization Before Sleeve Gastrectomy for Super Obese Patients NCT05710263 | Centre Hospitalier Universitaire, Amiens | N/A |
| Unknown | Preoperative Carbohydrate Loading in Bariatric Surgery - Clinical Trial NCT05692414 | Medical University of Gdansk | N/A |
| Completed | Efficacy and Safety of Ciprofol in Laparoscopic Sleeve Gastrectomy NCT05522998 | The Third People's Hospital of Chengdu | Phase 4 |
| Completed | Effects of Physical Training on Health Markers of Post-bariatric Patients NCT04193397 | Rio de Janeiro State University | N/A |
| Unknown | EGG Test as a Predictor for an Individual Response to Treatment by Various Bariatric Procedures NCT05731531 | Asian Institute of Gastroenterology, India | N/A |
| Unknown | Prospective Pilot Study for the Evaluation of Endoscopic Sleeve Gastroplasty With Endomina® for the Treatment NCT05760235 | Fondazione Policlinico Universitario Agostino Gemelli IRCCS | N/A |
| Completed | Sarcopenia After Bariatric Surgery in Older Patients: a Cohort Study NCT05582668 | Universitaire Ziekenhuizen KU Leuven | — |
| Completed | Online Clinic Pilates Exercises in Patients Undergoing Bariatric Surgery NCT05454696 | Istanbul University | N/A |
| Completed | Desaturations and Nursing Interventions in Patients Receiving Supplemental Oxygen Therapy After Metabolic and NCT07174674 | Rijnstate Hospital | — |
| Recruiting | Bone and Muscle Health Following Sleeve Gastrectomy in Men, Premenopausal and Postmenopausal Women NCT06547515 | CHU de Quebec-Universite Laval | — |
| Recruiting | Preventing Muscle Loss After Bariatric Surgery: Protein-Collagen Supplementation and Resistance Exercise NCT07303543 | Medipol University | N/A |
| Completed | Assessment of the Impact of Perioperative Administration of Tranexamic Acid on Bleeding After Sleeve Gastrecto NCT06038981 | Medical University of Gdansk | N/A |
| Recruiting | The Banded Mini Gastric Bypass Trial: A Prospective Randomized Controlled Trial NCT05472922 | Marc van Det | N/A |
| Completed | Gaining Optimism After Weight Loss Surgery (GOALS) II NCT04868032 | Massachusetts General Hospital | N/A |
| Completed | OFA vs OBA in Bariatric Surgery NCT07075302 | Hospital HM Nou Delfos | — |
| Completed | Comparison of Two Magnesium Sulfate Protocols in Opioid-Free Anesthesia for Bariatric Surgery NCT07077031 | Hospital HM Nou Delfos | — |
| Unknown | Multimodal Analgesic Management of Naborphine Combined With Opioid Free Anesthesia in OSA Patients Undergoing NCT05386979 | Qianfoshan Hospital | N/A |
| Completed | Gastric Emptying After Sleeve Gastrectomy NCT06407193 | Rijnstate Hospital | — |
| Unknown | Liver Fat Content and Bariatric Surgery NCT06064240 | yu li，MD | — |
| Unknown | Bariatric Surgery and Chronic Renal Disease NCT05240443 | McMaster University | N/A |
| Terminated | Dual-dose Aprepitant to Reduce Postoperative Nausea and Vomiting After Laparoscopic Bariatric Surgery. NCT05189756 | Insel Gruppe AG, University Hospital Bern | Phase 4 |
| Active Not Recruiting | Physical Exercise Prehabilitation Program in MEtabolic SuRgery NCT06889207 | Flevoziekenhuis | N/A |
| Unknown | Outcomes After Weight Loss Surgery in Low-Risk Patients NCT05699083 | Dr. Feiz & Associates | N/A |
| Completed | Study to Evaluate ARD-101 in Adults Receiving Bariatric Surgery NCT05215847 | Aardvark Therapeutics, Inc. | Phase 2 |
| Recruiting | Glycemic Patterns After Bariatric Surgery and High Glycemic Variability and Hypoglycemia Unawareness Risk Fact NCT05728320 | Rio de Janeiro State University | — |
| Recruiting | Comparisons of Metabolic Effect of Sleeve Gastrectomy With Duodenojejunal Bypass and Sleeve Gastrectomy (MEDUS NCT05211375 | Seoul National University Bundang Hospital | Phase 3 |
| Withdrawn | Dexlansoprazole Absorption and Marginal Ulceration After Gastric Bypass NCT04423588 | Spital Limmattal Schlieren | Phase 4 |
| Completed | Acupressure Application in Obesity Surgery 2345 NCT06468345 | Ataturk University | N/A |
| Completed | Improved Erectile Function After Bariatric Surgery: Role of Testosterone and Other Factors NCT06527170 | Jagiellonian University | — |
| Active Not Recruiting | Role of Dietary Habits in Efficacy of Bariatric Surgery - Study C NCT03482986 | Brigham and Women's Hospital | N/A |
| Completed | Blood Pressure Changes After Bariatric Surgery NCT06460233 | Medical University of Warsaw | — |
| Withdrawn | Endoscopic Cardiac Band Ligation for the Management of Refractory GERD After Laparoscopic Sleeve Gastrectomy NCT04771247 | Johns Hopkins University | N/A |
| Recruiting | Improvement in Glycemic Response After Bariatric Surgery NCT05325736 | Weizmann Institute of Science | — |
| Completed | Gaining Optimism After Weight Loss Surgery (GOALS) I NCT04867902 | Massachusetts General Hospital | N/A |
| Unknown | Naldebain for Pain Control After Bariatric Surgery NCT04651361 | E-DA Hospital | Phase 2 / Phase 3 |
| Completed | Optimizing Function Outcomes After Bariatric Surgery With Core Stabilization Training: A Randomized Controlled NCT04932694 | Cairo University | N/A |
| Active Not Recruiting | Role of Dietary Habits in Efficacy of Bariatric Surgery - Study B NCT03467906 | Brigham and Women's Hospital | — |
| Completed | The Effect of Music Therapy After Bariatric Surgery on Postoperative Nausea Vomiting and Patient Satisfaction NCT06048952 | Sibel Yilmaz Sahin | N/A |
| Completed | Multivitamin Support Following Bariatric Surgery NCT06152965 | Bioitalia srl | — |
| Completed | Comparison of Three Hypoabsortive Surgical Techniques for Treatment of Type IV Morbid Obesity NCT04861961 | Hospital Universitari de Bellvitge | N/A |
| Completed | Fat Absorption and Metabolism After Roux-en-Y Gastric Bypass NCT04859816 | Hvidovre University Hospital | N/A |
| Recruiting | Monitoring the Weight Evolution Using a Connected Scale NCT04639778 | University Hospital, Lille | N/A |
| Unknown | Physical Activity Counseling After Bariatric Surgery NCT04795375 | Hadassah Medical Organization | N/A |
| Unknown | Zoledronic Acid for Prevention of Bone Loss After BAriatric Surgery (ZABAS) NCT04742010 | Stinus Gadegaard Hansen | Phase 2 |
| Unknown | New Imaging Tools to Explore Impact of Bariatric Surgery on Pancreatic Lesions: PACHIBA- Bariatric Surg NCT04746703 | Assistance Publique - Hôpitaux de Paris | N/A |
| Completed | Laughter Yoga Effect Depression, Serotonin Levels With Bariatric Surgery Patient NCT06020079 | Tokat Gaziosmanpasa University | N/A |
| Recruiting | Extending Time Without Diabetes After Bariatric Surgery: a Trial Comparing the Metformin Addition or Not to St NCT04581447 | Assistance Publique - Hôpitaux de Paris | Phase 3 |
| Unknown | Determinants on Rocuronium Dose for Deep Block in Bariatric Surgery NCT04709406 | Seoul National University Bundang Hospital | — |
| Recruiting | Ovarian Reserve and Bariatric Surgery NCT04583150 | Assistance Publique - Hôpitaux de Paris | — |
| Unknown | Endocrinological and Neuronal Aspects of Bariatric Surgery NCT04634929 | University of Heidelberg Medical Center | — |
| Active Not Recruiting | The PREBA Study: Effect of Preoperative Weight Loss With a 14-day Low-calorie Diet on Surgical Procedure and O NCT04433338 | Rijnstate Hospital | N/A |
| Unknown | Virtual Reality Exercise Gaming in Patients Awaiting Bariatric Surgery NCT04297306 | Royal Cornwall Hospitals Trust | N/A |
| Unknown | Reducing Sedentary Time in Bariatric: The Take a STAND for Health Study NCT04517591 | University of Sao Paulo | N/A |
| Completed | Assessing Insulin Turnover Using an In-vivo Deuterated Water Experiment. NCT04332289 | Lia Bally | — |
| Completed | Fostering Exercise After Bariatric Surgery NCT04413812 | Lia Bally | N/A |
| Unknown | Feasibility of a Telematics Pre-operative Assessment in a Bariatric Surgery During Covid-19 NCT04486417 | University of Roma La Sapienza | — |
| Completed | Home-based Exercise Training During Covid-19 Pandemic in Post-bariatric NCT04425005 | University of Sao Paulo | N/A |
| Recruiting | Chinese Obesity and MEtabolic Surgery Database (COMES Database) NCT06275061 | Jinan University Guangzhou | — |
| Completed | Quality of Recovery Following Opioids Free Anaesthesia in Laparoscopic Sleeve Gastrectomy NCT04285255 | Al Mashfa Medical Center | N/A |
| Completed | Physiological Responses to Laparoscopic Sleeve Gastrectomy: Focusing on Ghrelin NCT04055025 | Hvidovre University Hospital | N/A |
| Completed | The Effects of E-Mobile Education and Counselling Services on Bariatric Surgery Patients NCT05278767 | Cukurova University | N/A |
| Completed | Pharmacokinetics of Rivaroxaban After Bariatric Surgery NCT04180436 | University Hospital, Brest | Phase 1 |
| Completed | Adjunct Phentermine + Topiramate After Bariatric Surgery in 12-24 Year Olds NCT04095104 | University of Colorado, Denver | Phase 2 |
| Unknown | Pre-operative Intranasal Oxytocin for Enhancing Bariatric-induced Diabetes Remission NCT05207774 | Soroka University Medical Center | N/A |
| Completed | Social Isolation But Not Deprivation Involved in Employment Status After Bariatric Surgery. NCT06998953 | Centre Hospitalier de Saint-Denis | — |
| Completed | Laparoscopic Bariatric Surgery and Erector Spinae Plane Block NCT04189289 | Antalya Training and Research Hospital | N/A |
| Suspended | Physical Exercise in Postoperative Bariatric Surgery Patients NCT04235842 | Universidad Católica del Maule | N/A |
| Recruiting | Database Concerning Patients Consulting the Obesity Clinic NCT04614961 | Universitaire Ziekenhuizen KU Leuven | — |
| Unknown | The Effect of Bariatric Procedures on Gut Microbiota in Obese Individuals in United Arab Emirates and Lebanon NCT04200521 | Zayed University | — |
| Active Not Recruiting | Comparative Evaluation of the Evolution of Arterial and Microcirculatory Endothelial Function in Obese Patient NCT03636243 | Centre Hospitalier Universitaire de Nīmes | N/A |
| Completed | Diabetes Remission After RYGBP and RYGBP With Fundus Resection NCT05854875 | University of Patras | N/A |
| Terminated | Use of an Endoluminal-suturing Device for Endoscopic Gastric Reduction as an Aid for Class I Obesity, or Class NCT03900481 | Assistance Publique Hopitaux De Marseille | N/A |
| Completed | Tolerance of Early Postoperative Mobilization and Ambulation NCT04040647 | University of Liege | — |
| Unknown | Semi-supervised Exercise Program Before Bariatric Surgery NCT03975244 | Hospital General Universitario Elche | N/A |
| Not Yet Recruiting | Registry on Obesity Surgery in Adolescents NCT03203161 | Queen Fabiola Children's University Hospital | — |
| Unknown | Bariatric Surgery and LDL Cholesterol NCT03975478 | Parc de Salut Mar | N/A |
| Completed | Incretin Hormone Antagonism After Bariatric Surgery NCT03950245 | Hvidovre University Hospital | N/A |
| Unknown | Use of Electroanalgesia in Pain and Pulmonary Function. NCT04800640 | Centro Universitário Augusto Motta | N/A |
| Completed | Photographic Food Recognition and Meal Size Estimation Before and After Roux-en-Y Gastric Bypass NCT04600596 | Marco Bueter | — |
| Unknown | Impact of Bariatric Surgery on Pharmacokinetic Study of Simvastatin and Carvedilol NCT04049786 | Natalia Valadares de Moraes | Phase 4 |
| Unknown | Investigation on the Role of Gut-liver Axis for Non-alcoholic Steatohepatitis Through Bariatric Surgery NCT04501042 | National Taiwan University Hospital | — |
| Completed | Microstructure of Ingestive Behavior and Body Weight Loss After Roux-en-Y Gastric Bypass NCT04933305 | Marco Bueter | — |
| Recruiting | The Impact of the Hypnosis on the Loss of Weight at Patients in Failure of Bariatric Surgery NCT03485469 | University Hospital, Montpellier | N/A |
| Completed | Impact of Whey Protein Supplementation on Body Weight and Metabolic Parameters of Bariatric Patients NCT04510389 | Federal University of Minas Gerais | N/A |
| Completed | Investigation of Body Awareness and Affecting Factors in Bariatric Surgery Patients NCT03905070 | Izmir Katip Celebi University | — |
| Completed | Diaphragm Functions in Bariatric Surgeries NCT04828408 | Turkiye Yuksek Ihtisas Education and Research Hospital | — |
| Completed | Botulinum Toxin Pyloroplasty to Reduce Postoperative Nausea and Vomiting After Sleeve Gastrectomy NCT03701919 | Albany Medical College | Phase 4 |
| Unknown | Deep Neuromuscular Relaxation Optimizing Low-Pressure Bariatric Surgery NCT03803982 | McMaster University | N/A |
| Unknown | Robotic Versus Laparoscopic Techniques for Revisional Bariatric Surgery NCT03673410 | McMaster University | N/A |
| Completed | Role of Dietary Habits in Efficacy of Bariatric Surgery - Study A NCT03470558 | Brigham and Women's Hospital | — |
| Unknown | Impacts of Remote Digital Support on Physical Activity for Patients in Bariatric Surgery NCT03963986 | Centre Hospitalier Intercommunal Creteil | N/A |
| Completed | Predictive Factors of Regain in Bariatric Patients Without Outpatients Care Regular. NCT04193384 | Rio de Janeiro State University | — |
| Unknown | Effects of Bariatric Surgery on Cardiac and Vascular Structure and Function in Obesity NCT03732326 | Shanghai 10th People's Hospital | — |
| Completed | Diet Quality Before and After Metabolic Bariatric Surgery (Eetscore Study) NCT06763588 | Rijnstate Hospital | — |
| Completed | Bariatric Procedures and Changes Gastric Passage NCT04972357 | Rijnstate Hospital | — |
| Completed | Understanding Hypoglycaemia After Bariatric Surgery NCT03609632 | Insel Gruppe AG, University Hospital Bern | N/A |
| Completed | Pre-surgical Motivation for Bariatric Surgery NCT04517084 | Yale-NUS College | — |
| Recruiting | Effect of Bariatric Surgery on Cardiac Function in Patients With Hypertension NCT05166954 | Beijing Friendship Hospital | — |
| Completed | Bariatric Scalable Internet Treatments NCT03680703 | Yale University | N/A |
| Completed | Rivaroxaban as Thrombosis Prophylaxis in Bariatric Surgery NCT03522259 | Insel Gruppe AG, University Hospital Bern | Phase 2 |
| Completed | Sexual Health of Obese Men Before and After Bariatric Surgery. NCT03547765 | University Hospital, Bordeaux | — |
| Unknown | Laparoscopic Single Anastomosis Sleeve Ileal Bypass Versus Laparoscopic Sleeve Gastrectomy For Morbidly Obese NCT04218045 | Zagazig University | N/A |
| Completed | Novel Technique in Closure of Mesenteric Defects After Laparoscopic Roux-en-Y Gastric Bypass and Its Effect on NCT04788199 | Mansoura University | — |
| Completed | 30-Days Post-Operative Complications in Bariatric Surgery NCT04779723 | Multan Medical And Dental College | N/A |
| Unknown | Study to Evaluate Effectiveness of a Weight Loss Program in Obese Patients During 3 Months Prior to Bariatric NCT03530566 | Protein Supplies SL | — |
| Completed | MINI Bypass Versus Roux-en-Y Bypass: Differences in HOrmonal Secretions at 2 Years of Surgery NCT03482895 | Assistance Publique - Hôpitaux de Paris | — |
| Unknown | the Related Factors of Bariatric Surgery on Bone Mineral Density NCT03689816 | First Affiliated Hospital of Jinan University | N/A |
| Unknown | the Related Factors of Bariatric Surgery on Lipidemia NCT03689803 | First Affiliated Hospital of Jinan University | N/A |
| Unknown | the Related Factors of Bariatric Surgery on Liver Function NCT03689790 | First Affiliated Hospital of Jinan University | N/A |
| Completed | Skeletal Health in Bariatric Surgery Patients NCT03331536 | University of Alabama at Birmingham | — |
| Recruiting | Bone Health After Bariatric Surgery in Patients With Type 2 Diabetes NCT03455868 | CHU de Quebec-Universite Laval | — |
| Unknown | The Effect of Bariatric Surgery to Central Sensitization NCT03460691 | Bursa Yuksek Ihtisas Training and Research Hospital | — |
| Completed | Safety and Feasibility of Endomina, an Candy Cane Syndrome Endoluminal Suturing Device NCT03608267 | Erasme University Hospital | N/A |
| Completed | Effectiveness and Tolerability of Phentermine in Patients Under Bariatric Surgery NCT03849729 | Hospital Juarez de Mexico | Phase 4 |
| Completed | Obesity Cohort Bichat Louis Mourier NCT03538210 | Assistance Publique - Hôpitaux de Paris | — |
| Completed | Microstructural Analysis of Ingestive Behavior After Roux-en-Y Gastric Bypass - Pilot NCT03747445 | Marco Bueter | — |
| Unknown | the Related Factors of Bariatric Surgery on Gastroesophageal Reflux Disease NCT03497494 | First Affiliated Hospital of Jinan University | N/A |
| Completed | The Relationship Between Postoperative Oxygenation and STOP-BANG Questionnaire and 4-V Tool NCT03838705 | Umraniye Education and Research Hospital | N/A |
| Unknown | the Related Factors of Bariatric Surgery on Glomerular Filtration Rate NCT03689777 | First Affiliated Hospital of Jinan University | N/A |
| Completed | App-technology to Improve the Level of Physical Activity After Bariatric Surgery NCT03480464 | Karolinska Institutet | N/A |
| Completed | Defining Benchmarks in Bariatric Surgery NCT03440138 | Marco Bueter | — |
| Unknown | Does Participation in a Pre-Operative Physical Activity Program Improve Patient Outcomes and Quality of Life? NCT03049696 | University of Manitoba | N/A |
| Completed | The Impact of Preoperative Anemia on Postoperative Anemia and Related Nutrient Abnormalities After Bariatric S NCT06218953 | China-Japan Friendship Hospital | — |
| Completed | Prediction Model for Anemia After Bariatric Surgery NCT06170749 | China-Japan Friendship Hospital | — |
| Completed | Prediction Model for Inadequate Weight Loss After Sleeve Gastrectomy NCT06157606 | China-Japan Friendship Hospital | — |
| Completed | High-flow Nasal Oxygenation in Obese Patients During Apnea NCT03195504 | University Health Network, Toronto | N/A |
| Unknown | Fat Metabolites and Gut Hormones NCT03223389 | Hvidovre University Hospital | N/A |
| Completed | Apixaban Pharmacokinetics in Bariatric Patients (APB) NCT02406885 | Johns Hopkins University | Phase 4 |
| Completed | A Cohort Study on Obese Patients' Multidisciplinary Integrated Health Management NCT07451938 | China-Japan Friendship Hospital | — |
| Completed | Postprandial Hypoglycemia in Patients After Bariatric Surgery With Empagliflozin and Anakinra - The Hypo-BEAR- NCT03200782 | University Hospital, Basel, Switzerland | N/A |
| Withdrawn | Impact of the Systematic Closure of the Epigastric Trocar on Postoperative Incisional Hernia After Sleeve Gast NCT02973009 | Centre Hospitalier Universitaire, Amiens | — |
| Unknown | Supplementation After Bariatric Surgery NCT04412421 | Region Östergötland | — |
| Unknown | Melatonin Level and Postoperative Analgesia Consumption in Bariatric Surgery Patients. NCT03107702 | Inonu University | — |
| Unknown | Assessing the Value of eHealth for Bariatric Surgery NCT03394638 | Catharina Ziekenhuis Eindhoven | N/A |
| Unknown | Prospective Clinical Study of PCV and PCV-VG in Patients Undergoing Bariatric Surgery NCT03150264 | Huashan Hospital | N/A |
| Completed | Nutritional Health and Satisfaction After Bariatric Surgery: a Five-Year Retrospective Study NCT06664580 | San Raffaele Telematic University | — |
| Completed | Evaluation of Characteristics of Patients With Nonsurgical Complications After Bariatric Surgery and Quality o NCT05957237 | Universitaire Ziekenhuizen KU Leuven | — |
| Completed | Effect of Bariatric Surgery on Physical Activity, Gait, Flexibility and Quality of Life NCT05358288 | Ankara Yildirim Beyazıt University | — |
| Completed | Physiological Effects of Gastric Sleeve Operation NCT03046186 | Hvidovre University Hospital | — |
| Completed | Comparison of Volume Controlled Ventilation and Pressure Controlled Ventilation in Laparoscopic Bariatric Surg NCT03758937 | Antalya Training and Research Hospital | N/A |
| Terminated | Preoperative Treatment With Noninvasive Intra-auricular Vagus Nerve Stimulation Pending Bariatric Surgery NCT02648191 | Centre Hospitalier Universitaire de Saint Etienne | N/A |
| Unknown | Obesity: Prospective Evaluation of Upper Airway Obstruction and Compliance in Obese Patients in Pre and Post B NCT03360565 | Assistance Publique - Hôpitaux de Paris | — |
| Completed | Comparative Effectiveness of Metabolic and Bariatric Surgery With PROMs NCT02749305 | Massachusetts General Hospital | N/A |
| Completed | A Comparison Between Short vs. Long Biliopancreatic Limb Gastric Bypass NCT04609449 | CARLOS ZERRWECK LOPEZ | N/A |
| Completed | Bariatric Surgeries in Elderly NCT02817295 | Assuta Medical Center | — |
| Completed | Fitbit / Healthy Weight Management Study NCT02381262 | Lancaster General Hospital | N/A |
| Unknown | Acute Effect of EPAP and Noninvasive Ventilation on Pulmonary Function and Lung Regional Ventilation on Bariat NCT02577744 | Universidade Federal de Pernambuco | N/A |
| Unknown | Complications in Body Contouring Surgery NCT02552433 | St. Antonius Hospital | — |
| Completed | Safety Profile of IntRAvenous Lidocaine Use in Coelioscopic Bariatric Surgery NCT02525016 | Hospices Civils de Lyon | Phase 3 |
| Completed | Potential Associations Between Alterations in Gut Microbiome and Obesity-related Traits After the Bariatric Su NCT05085769 | Hacettepe University | — |
| Completed | Evaluation of the Dietary Supplement Refill Bypass to Reduce Nutritional Deficiencies of Patients Who Underwen NCT02440087 | Refill France | — |
| Completed | Continuous Non-invasive Assessment of Blood Pressure in Bariatric Surgery NCT03184285 | University Hospital Schleswig-Holstein | N/A |
| Completed | Non-invasive Assessment of Cardiac Output and Fluid Responsiveness in Bariatric Surgery NCT03184272 | University Hospital Schleswig-Holstein | N/A |
| Completed | Analysis of Changes in Eating Habits on Post Bariatric Surgery Patients and Their Family Members NCT02431195 | Assistance Publique - Hôpitaux de Paris | — |
| Suspended | Role and Mechanisms of Obesity Surgery NCT01998815 | Göteborg University | — |
| Completed | Iron Absorption Trial NCT02228902 | Rijnstate Hospital | Phase 4 |
| Unknown | Laparoscopic Bariatric Surgery: Impact of Deep Neuromuscular Block on Surgical Conditions NCT02118844 | Central Hospital, Nancy, France | Phase 4 |
| Completed | To Define the Role of GLP-1 for Improving Glucose Homeostasis in Humans Following Gastric Bypass Surgery NCT02204813 | Washington University School of Medicine | Phase 1 |
| Completed | Impact of Weight Loss After a Bypass Surgery on Renal Hemodynamic Under Stress Conditions NCT02218112 | Centre Hospitalier Universitaire Vaudois | — |
| Completed | Comparison of the Effects of Weight Changes on Serum Adipokines in Patients Diagnosed With Anorexia Nervosa an NCT04663919 | Istanbul University | N/A |
| Completed | Study to Examine the Effect of Gastric Bypass Surgery on Venlafaxine ER Blood Levels NCT01867255 | Mayo Clinic | Phase 1 |
| Completed | Does Pulmonary Compliance Optimization Through PEEP Manipulations Reduces the Incidence of Postoperative Hypox NCT02579798 | Brugmann University Hospital | N/A |
| Completed | Modes of Ventilation During Laparoscopic Bariatric Surgery NCT01890564 | Joseph D. Tobias | — |
| Completed | CNAP Accuracy in the Bariatric Surgery Population NCT01896206 | Joseph D. Tobias | N/A |
| Completed | Effect of Moderate Alcohol Consumption to Cognitive Functioning After Roux-en Y Gastric Bypass NCT02380950 | eSwiss Medical & Surgical Center | N/A |
| Completed | The Metabolic Effects of Prebiotic Supplementation After Roux-en-Y Gastric Bypass Surgery NCT03517345 | Istanbul University | N/A |
| Completed | Regional TAP Block for Bariatric Patients NCT04051684 | Montefiore Medical Center | Phase 1 / Phase 2 |
| Completed | Bariatric Surgery and Sperm Quality NCT01842295 | Assistance Publique - Hôpitaux de Paris | N/A |
| Completed | Intraoperative Findings and Complications in Bariatric Surgery NCT03556306 | Hospital General Tlahuac | — |
| Unknown | Obesity Surgery, Counseling, and Psychological Well-Being NCT01865227 | American University of Sharfah | N/A |
| Completed | Bariatric Surgery and Reactive Hypoglycemia NCT01581801 | Catholic University of the Sacred Heart | N/A |
| Unknown | Randomized Trial of Preoperative Diets Before Bariatric Surgery NCT01652105 | Lievensberg Ziekenhuis | N/A |
| Recruiting | Sleeve Gastrectomy and Roux-en-Y Gastric Bypass in the Treatment of Type 2 Diabetes Mellitus. NCT01984762 | Göteborg University | N/A |
| Completed | DIT After RYGB - A Prospective Study NCT01759667 | Silvia Leite Faria | N/A |
| Completed | Do Text Message Reminders Increase Preoperative Exercise in Obesity Surgery Candidates? NCT01607177 | University of Auckland, New Zealand | Phase 3 |
| Completed | Revisional Bariatric Surgery Experience NCT03983135 | Bakirkoy Dr. Sadi Konuk Research and Training Hospital | N/A |
| Completed | Tissue and Plasma Pharmacokinetics of Cefazolin in Antibiotic Prophylaxis in Bariatric Surgery NCT01537380 | Nantes University Hospital | Phase 4 |
| Completed | Impact of Monthly High Dose Oral Cholecalciferol on Serum 25 Hydroxy Vitamin D Levels in Bariatric Surgery Sub NCT01871389 | Texas Tech University | — |
| Completed | Swedish National Benchmarks in Laparoscopic Bariatric Surgery NCT05785351 | Region Östergötland | — |
| Completed | Change in Cognitive Function in Obese Patients After Bariatric Surgery - an Observational Study NCT01554228 | Charite University, Berlin, Germany | — |
| Completed | Relationship Between Changes in Gut Hormones After Gastric Bypass and Gastric Banding and Improvements in Diab NCT01153438 | University of Pennsylvania | — |
| Terminated | Effects of Caloric Restriction Alone Versus Postoperative Caloric Restriction Following Bariatric Surgery on G NCT01083108 | National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) | Phase 2 |
| Recruiting | Patient Reported Outcome After Bariatric Surgery NCT03490630 | Insel Gruppe AG, University Hospital Bern | — |
| Completed | Protein Need and Interest of " Quick Proteins " to the Obese Subject Operated by Bariatric Surgery (BIBOP) NCT01249326 | University Hospital, Clermont-Ferrand | N/A |
| Completed | Metabolic Surgery for Metabolic Syndrome NCT07183137 | The Third Xiangya Hospital of Central South University | — |
| Completed | Relationship of Realize Mysuccess Usage to Outcomes of Bariatric Surgery NCT01197937 | University of Pennsylvania | — |
| Completed | Absorption of Drugs Post-Bariatric Surgery (Absorb-Azithromycin) NCT01154569 | University of Alberta | N/A |
| Completed | Bariatric Surgery and Obstructive Sleep Apnea NCT01243463 | Summa Health System | — |
| Completed | Comparing Bariatric Surgery Outcomes in Predominantly High-Risk Asian Patients to Global Benchmarks NCT06649578 | National University Hospital, Singapore | — |
| Completed | Effects of Gastric Bypass on Blood Levels of Duloxetine NCT00989157 | Neuropsychiatric Research Institute, Fargo, North Dakota | Phase 3 |
| Unknown | Prospective Controlled Trial on Surgical Treatment of Type 2 Diabetes Patients With BMI 25-30 by Means of Bili NCT01046994 | IRCCS Azienda Ospedaliera Universitaria San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy | Phase 3 |
| Completed | Autonomic Nervous System Function Following Bariatric Surgery NCT00948545 | Christiana Care Health Services | — |
| Completed | Pre-op Use of Incentive Spirometry in Obese Patients NCT01004146 | The University of Texas Health Science Center, Houston | N/A |
| Completed | Study Testing Patient Decision Tools Related to the Risks and Benefits of Weight Loss Surgery NCT00666952 | Kaiser Permanente | N/A |
| Completed | Study on Impact of Lifestyle Change and Weight Loss Before Bariatric Surgery NCT00623792 | Duquesne University | N/A |
| Completed | Energy Expenditure Pre and Post Bariatric Surgery NCT01231087 | Gastrocirurgia, Brazil | — |
| Unknown | Surgical Treatment of Type 2 Diabetes Mellitus in <35 Body Mass Index (BMI) NCT00996294 | IRCCS Azienda Ospedaliera Universitaria San Martino - IST Istituto Nazionale per la Ricerca sul Cancro, Genoa, Italy | N/A |
| Recruiting | Study of Bariatric Surgery NCT02857179 | Hospices Civils de Lyon | — |
| Completed | Pharmacodynamic Trial on Rocuronium in Obese Patients NCT00540085 | Rigshospitalet, Denmark | Phase 4 |
| Completed | Effects of Bariatric Surgery on Insulin NCT00535600 | National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) | — |
| Completed | Comparison Between Patients With or Without Diabetes Recovery After Bariatric Surgery NCT00834938 | University of Campinas, Brazil | — |
| Completed | LAGB Versus VBG: 7-Year Results NCT00840736 | Maastricht University Medical Center | N/A |
| Terminated | The Effect of Surgically Induced Weight Loss on Endocrine Function, Cardiovascular Function and Body Compositi NCT00686972 | Johns Hopkins University | Phase 2 |
| Completed | Bone Loss After Laparoscopic Roux-en-Y Gastric Bypass NCT00975013 | Gundersen Lutheran Medical Foundation | — |
| Completed | Impact of Weight Loss Following Bariatric Surgery on Pulmonary Function in Patients With Morbid Obesity NCT00532896 | Laval University | — |
| Completed | Study to Determine Incidence of Hypoventilation in Patients Who Have Undergone Gastric Bypass NCT00316446 | University of South Florida | — |
| Completed | Nutritional Status During Pregnancy After Bariatric Surgery NCT03469635 | Assistance Publique - Hôpitaux de Paris | — |
| Completed | Effects of Preoperative Inspiratory Muscle Training (IMT) in Obese Women Undergoing Open Bariatric Surgery NCT01321983 | Universidade Federal de Sao Carlos | N/A |