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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Bariatric Patients Clear all
Completed Not applicable Interventional

Decreasing Post-Operative Nausea and Vomiting in the Bariatric Surgical Patient

NCT06110416
View directory record Official record
Conditions
Nausea, Postoperative, Vomiting, Postoperative
Interventions
nausea relief inhaler
Other
Lead sponsor
Methodist Health System
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Mansfield, Texas
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Sep 28, 2026, 2:33 PM EDT
Completed No phase listed Observational

Comparison of Obesity Alleles Among Diverse Demographic Patients

NCT01396096
View directory record Official record
Conditions
Obesity
Interventions
Not listed
Lead sponsor
NYU Langone Health
Other
Eligibility
Not listed
Enrollment
2,500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Sep 28, 2026, 2:33 PM EDT
Completed No phase listed Observational

Impact of Plasma Soluble Prorenin Receptor in Obese and Type 2 Diabetic Patients

NCT03643783
View directory record Official record
Conditions
Obesity, Type2 Diabetes, Bariatric Surgery Candidate
Interventions
Not listed
Lead sponsor
Tulane University
Other
Eligibility
18 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Feb 28, 2021 · Synced Sep 28, 2026, 2:33 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Outcomes After Weight Loss Surgery in Low-Risk Patients

NCT05699083
View directory record Official record
Conditions
Weight Loss, Bariatric Surgery
Interventions
Body Image/Self-Esteem Questionnaires
Other
Lead sponsor
Dr. Feiz & Associates
Other
Eligibility
Not listed
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Beverly Hills, California
Source: ClinicalTrials.gov public record
Updated Jan 25, 2023 · Synced Sep 28, 2026, 2:33 PM EDT
Terminated No phase listed Observational

Eye Movement Testing in Patients With Obesity and the Impact of Weight Loss Surgery

NCT04940429
View directory record Official record
Conditions
Bariatric Surgery Candidate, Obesity, Morbid
Interventions
Neurofit, Psychometric hepatic encephalopathy score
Device · Diagnostic Test
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Jun 24, 2021 · Synced Sep 28, 2026, 2:33 PM EDT
Completed Not applicable Interventional

Study Testing Patient Decision Tools Related to the Risks and Benefits of Weight Loss Surgery

NCT00666952
View directory record Official record
Conditions
Obesity, Morbid, Obesity, Decision Aids, Bariatric Surgery
Interventions
Video Decision Aid, Booklet Decision Aid
Other
Lead sponsor
Kaiser Permanente
Other
Eligibility
20 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 12, 2017 · Synced Sep 28, 2026, 2:33 PM EDT
Completed Phase 4 Interventional Results available

Nicotine Administration and Post-operative Opioid Use With Bariatric Surgery

NCT01194089
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Nasal Nicotine Spray, Nasal Normal Saline Spray
Drug
Lead sponsor
Toby Weingarten
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 8, 2015 · Synced Sep 28, 2026, 2:33 PM EDT
Completed No phase listed Observational Results available

Laparoscopic Versus Transabdominal Ultrasound in Morbidly Obese Patients

NCT00971750
View directory record Official record
Conditions
Cholelithiasis, Ultrasonography, Laparoscopic Gastric Bypass
Interventions
Not listed
Lead sponsor
Gundersen Lutheran Medical Foundation
Other
Eligibility
18 Years and older
Enrollment
253 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2011
U.S. locations
1
States / cities
La Crosse, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 10, 2012 · Synced Sep 28, 2026, 2:33 PM EDT
Not listed No phase listed Observational

Appetite Suppression / Hormone Study Control Group

NCT02029677
View directory record Official record
Conditions
Morbid Obesity, Bariatric Surgery Patient
Interventions
Not listed
Lead sponsor
Oregon Weight Loss Surgery, LLC
Other
Eligibility
18 Years to 69 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2024
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated May 30, 2024 · Synced Sep 28, 2026, 2:33 PM EDT
Suspended Phase 2Phase 3 Interventional

A Behavioral Intervention to Decrease Vomiting and Improve Weight Loss in Post-Operative Laparoscopic Adjustable Gastric Banding (LAGB) Patients

NCT01860053
View directory record Official record
Conditions
Bariatric Surgery Complications
Interventions
behavioral intervention
Behavioral
Lead sponsor
The Miriam Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated May 21, 2013 · Synced Sep 28, 2026, 2:33 PM EDT
Terminated Phase 2 Interventional

Effects of Caloric Restriction Alone Versus Postoperative Caloric Restriction Following Bariatric Surgery on Glucose Metabolism in Patients With Diabetes Mellitus

NCT01083108
View directory record Official record
Conditions
Obesity, Bariatric Surgery, Morbid Obesity, Diabetes Mellitus Type 2, Diet Therapy
Interventions
Roux-en-Y Gastric Bypass, Caloric Restriction
Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 60 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
3
States / cities
Baltimore, Maryland • Bethesda, Maryland • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 16, 2019 · Synced Sep 28, 2026, 2:33 PM EDT
Terminated Not applicable Interventional Results available

Intravenous Acetaminophen Use With Bariatric Surgery on Morbidly Obese Patients

NCT01527942
View directory record Official record
Conditions
Obesity, Pain
Interventions
Acetaminophen, Placebo
Drug
Lead sponsor
Trinity Health Of New England
Other
Eligibility
20 Years to 70 Years
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 16, 2015 · Synced Sep 28, 2026, 2:33 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Study to Determine Incidence of Hypoventilation in Patients Who Have Undergone Gastric Bypass

NCT00316446
View directory record Official record
Conditions
Morbid Obesity, Bariatric Surgery
Interventions
Not listed
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2009
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Sep 19, 2012 · Synced Sep 28, 2026, 2:33 PM EDT
Completed Phase 4 Interventional Results available

Apixaban Pharmacokinetics in Bariatric Patients (APB)

NCT02406885
View directory record Official record
Conditions
Bariatric Surgery, Obesity
Interventions
Apixaban
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 65 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 21, 2020 · Synced Sep 28, 2026, 2:33 PM EDT
Completed Phase 4 Interventional

Multimodal Analgesia Effect on Post Surgical Patient

NCT04240626
View directory record Official record
Conditions
Obesity, Morbid, Surgery, Bariatric Surgery Candidate
Interventions
Neurontin, Dilaudid Injectable Product, Marcaine Injectable Product, Oxycodone Hydrochloride, Hycet 7.5Mg-325Mg/15Ml Solution, Zofran Injection, Scopolamine patch, Ativan, Flexeril Oral Product, Tylenol Suspension
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
35 Years to 65 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Sep 13, 2026 · Synced Sep 28, 2026, 2:33 PM EDT
Completed Not applicable Interventional

Laparoscopic Gastric Plication Operation for Patients With Severe or Morbid Obesity

NCT01207609
View directory record Official record
Conditions
Morbid Obesity
Interventions
Laparoscopic Gastric Plication
Procedure
Lead sponsor
Ponce, Jaime, M.D.
Individual
Eligibility
18 Years to 60 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
2
States / cities
Dalton, Georgia • Chattanooga, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 1, 2016 · Synced Sep 28, 2026, 2:33 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Biomarkers of Liver Pathology in Patients With Presumed Non-Alcoholic Steatohepatitis Following Bariatric Surgery

NCT03294850
View directory record Official record
Conditions
NASH - Nonalcoholic Steatohepatitis; NAFLD - Nonalcoholic Fatty Liver Disease
Interventions
Bariatric surgery, HepQuant SHUNT Dual Cholate Liver Diagnostic Kit
Procedure · Device
Lead sponsor
AdventHealth Translational Research Institute
Other
Eligibility
18 Years and older
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Jul 15, 2021 · Synced Sep 28, 2026, 2:33 PM EDT
Suspended Not applicable Interventional

Bariatric Embolization of Arteries in Obese Patients With HCC to Allow Salvage Liver Transplantation

NCT02935478
View directory record Official record
Conditions
Obesity, Weight Loss, Body Weight, Hepatocellular Carcinoma, HCC, Hepatitis C, Cirrhosis
Interventions
Embospheres Microspheres
Device
Lead sponsor
St. Louis University
Other
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 5, 2025 · Synced Sep 28, 2026, 2:33 PM EDT
Completed Not applicable Interventional

Does Residual Muscular Weakness Lead to an Increase in Respiratory Complications in Bariatric Patients?

NCT02037516
View directory record Official record
Conditions
Respiratory Complication, Morbid Obesity
Interventions
Accelomyography, Neostigmine, Qualitative Monitor
Device · Drug
Lead sponsor
Coastal Anesthesiology Consultants
Other
Eligibility
Not listed
Enrollment
330 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Saint Augustine, Florida
Source: ClinicalTrials.gov public record
Updated Feb 4, 2016 · Synced Sep 28, 2026, 2:33 PM EDT
Active, not recruiting Not applicable Interventional

The TRIABETES - ARMMS-T2D Study: A Randomized Trial to Compare Surgical and Medical Treatments for Type 2 Diabetes

NCT01047735
View directory record Official record
Conditions
Type 2 Diabetes Mellitus, Obesity
Interventions
Roux-en-Y Gastric Bypass Surgery, Laparoscopic Adjustable Gastric Banding, Lifestyle Weight Loss Intervention
Procedure · Behavioral
Lead sponsor
University of Pittsburgh
Other
Eligibility
25 Years to 55 Years
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2028
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Sep 28, 2026, 2:33 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers Results available

Positive Psychology Intervention for Patients Post-bariatric Surgery and Their Partners

NCT05958615
View directory record Official record
Conditions
Obesity, Morbid
Interventions
Reimagining Us in the Context of Bariatric Surgery (ReConnect)
Behavioral
Lead sponsor
Larissa McGarrity, Ph.D.
Other
Eligibility
18 Years and older
Enrollment
82 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 7, 2026 · Synced Sep 28, 2026, 2:33 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Efficacy of Vitamin D Supplementation in Bariatric Surgery Patients

NCT01385098
View directory record Official record
Conditions
Obesity, Vitamin D Deficiency
Interventions
Vitamin D3 and Calcium
Dietary Supplement
Lead sponsor
Vadim Sherman, MD
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
37 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 22, 2018 · Synced Sep 28, 2026, 2:33 PM EDT
Recruiting Not applicable Interventional

Concurrent Laparoscopic Hysterectomy and Weight Loss Surgery in Obese Patients With Endometrial Carcinoma or Endometrial Intraepithelial Neoplasia

NCT04839614
View directory record Official record
Conditions
Endometrial Carcinoma, Obesity, EIN, Endometrial Intraepithelial Neoplasia, Endometrial Cancer Stage I
Interventions
CONCURRENT LAPAROSCOPIC HYSTERECTOMY AND WEIGHT LOSS SURGERY-Referral
Other
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 28, 2026, 2:33 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

The Metabolic and Genetic Drivers of Body Composition Changes Following Weight Loss Surgery

NCT07178704
View directory record Official record
Conditions
Bariatric Surgery Patients
Interventions
Not listed
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Sep 28, 2026, 2:33 PM EDT