Clinical Research Directory

ADAPTing CBT for Pediatric Functional Abdominal Pain in Spain

Many youth experience ongoing stomach pain that does not have a clear medical cause. These conditions, called functional abdominal pain disorders, are common and can last for years. They often interfere with school attendance, daily activities, and social life, and are frequently linked with anxiety. Families may go through many medical tests and appointments without finding relief. The investigators' research shows that teaching these children coping skills, such as relaxation, problem solving, and managing anxious thoughts, can reduce pain and improve functioning. The Aim to Decrease Anxiety and Pain Treatment (ADAPT) is a brief program developed by the investigators that uses cognitive behavioral strategies and mindfulness to help children manage pain and anxiety. However, access to providers trained to deliver these types of psychological treatments can be limited, creating a need for more accessible treatment options. The purpose of this project is to culturally adapt ADAPT for youth in Spain and deliver it through a digital platform, allowing children and families to access the program without requiring a trained provider to deliver each session. The project will evaluate how well the culturally adapted digital program works and whether it can be successfully delivered to youth in Spain. The goal is to increase access to evidence-based care, reduce pain and anxiety symptoms, and improve daily functioning for youth with functional abdominal pain disorders.

Different Intraperitoneal Pressures on Optic Nerve Sheath Diameter in Laparoscopic Surgeries

The aim of this study is to investigate the effects of low and normal intraperitoneal pressures on intraoperative optic nerve sheath diameter in laparoscopic gyneco-oncologic surgeries.

Morphine or Ketamine for Analgesia

Pain is common in children presenting to the emergency department but is frequently undertreated, leading to both short- and long-term consequences. Morphine is the standard treatment for children with moderate to severe acute pain, but its use is associated with serious side effects and caregiver and clinician concerns related to opioid administration. The investigators aim to determine if sub-dissociative ketamine is non-inferior to morphine for treating acute pain and a preferable alternative for treating acute pain in children because of its more favorable side effect profile and potential long-term benefits related to pain-related function, analgesic use/misuse, and mental and behavioral health outcomes.

ADAPTing CBT for Pediatric Functional Abdominal Pain in Primary Care

Many youth experience ongoing stomach pain that does not have a clear medical cause. These conditions, called functional abdominal pain disorders, are common and can last for years. They often interfere with school attendance, daily activities, and social life, and are frequently linked with anxiety. Families may go through many medical tests and appointments without finding relief. The investigator's research shows that teaching these children coping skills, like relaxation, problem solving, and managing anxious thoughts, can reduce pain and improve functioning. The Aim to Decrease Anxiety and Pain Treatment (ADAPT) is a brief program, using cognitive behavioral strategies and mindfulness, the investigators developed that helps children. ADAPT has been shown to work well in specialty clinics, but most children with stomach pain are first seen in primary care, where this type of support is not usually available. The purpose of this project is to test ADAPT in pediatric primary care and test whether it can be delivered successfully. The goal is to improve access to care, reduce symptoms, and better support children.

RELIEF-pathway in Patients With Upper Abdominal Pain

Upper abdominal pain (UAP) is a common symptom and frequently the reason to visit the hospital. The prevalence of epigastric pain in the Dutch population is estimated to be as high as 37%. Moreover, Dutch hospitals yearly record \>100.000 diagnoses related to UAP. In most patients, UAP can be attributed to symptomatic (functional) dyspepsia (FD), Irritable Bowel Syndrome (IBS) or uncomplicated gallstone disease (cholecystolithiasis), with a prevalence in the general population of 20-30%, 20%, and 6-9%, respectively. However, these conditions may have overlapping symptom patterns and generally affect similar populations. which contributes to ineffective (diagnostic) interventions. Patients are generally not aware of the similarity of symptoms and the poor outcome of some treatments. Education positively influences patients' self-management and health judgment. In a recent open-label, multicentre trial the effectiveness of web-based patients' education is applied to reduce overuse of upper gastrointestinal endoscopies in patients with dyspepsia. This study illustrated that an web-based education tool safely reduced 40% in upper gastrointestinal endoscopies. Lifestyle interventions (such as change of diet and/or physical activity) are widely incorporated in treatment programs for cardio-vascular diseases including diabetes mellitus and obesity. An web-based education tool on upper abdominal pain and other complaints combined with a lifestyle interventions for patients may be an effective treatment option for this large group of patients. This study investigates the potential of an individualized web-based education tool as intervention for patients with functional dyspepsia, irritable bowel syndrome and uncomplicated symptomatic cholecystolithiasis with the possibility to visit the Prevention and Lifestyle clinic (RELIEF pathway). The RELIEF pathway aims to reduce unnecessary health care utilization and, secondly, to maintain and improve quality of life by educating patients on lifestyle improvement.

GI Alpha-Gal Study

This is a double-blind, crossover food challenge study using pork with and without α-gal in patients with a clinical diagnosis of gastrointestinal (GI)- α-gal allergy, and to investigate the pathophysiology underlying their symptoms.

Effect of Chewing Exercises and Abdominal Massage

This study is planned with a randomized controlled experimental design to determine the effects of chewing exercises during the pre-colonoscopy preparation process and abdominal massage applied after the procedure on abdominal pain and nausea symptoms.

A Clinical Trial to Evaluate the Effects of a Supplement on Symptoms Associated With Liver and Digestive Health

This study will evaluate the effects of Edenboost Alpha Cleanse, a dietary supplement, on symptoms associated with liver and digestive health. The study is a single-arm, open-label trial in which all 40 enrolled participants will use the test product daily for 12 weeks. Participants will complete questionnaires at Baseline, Week 4, Week 8, and Week 12, and will undergo blood testing (hepatic function panel) at Baseline and Week 12. Primary outcomes focus on changes in liver function biomarkers, while secondary outcomes capture participants' self-reported experiences of energy levels, abdominal bloating, abdominal pain, fatigue, and nausea.

Empowered Relief for Youth

The purpose of this pilot study is to examine the feasibility and preliminary efficacy of Empowered Relief for Youth with chronic pain (ER-Y). ER-Y is a single-session pain management class for youth focused on pain science education and teaching self-regulatory skills for pain management based on the evidence-based adult ER class. Feasibility and acceptability of ER-Y will be assessed post-class. Preliminary efficacy will be assessed by administering surveys at baseline, 4-weeks, 8-weeks, and 12-weeks post class.

A Pilot Study Using Gut-Directed Hypnotherapy for Hospitalized Patients

The purpose of the study is to compare the effectiveness of recorded gut-directed hypnosis to an educational recording in people with chronic problems in their gastrointestinal (GI) system. Patients who are hospitalized at Stanford Hospital for worsening pain and/or nausea will be considered for enrollment.

Marginal Ulcer Healing With Low-Thermal Argon Plasma Endoscopic Treatment

The objective of the study is to investigate the treatment of marginal ulcers with Low Thermal plasma in an endoscopic setting. By a treatment of the ulcerated areas with argon plasma with low power settings (\~ 1 W) we hypothesize that the size of the ulcers will shrink, and the healing is accelerated compared to standard of care alone. Patients will benefit from this minimally invasive approach compared to a much more invasive surgical approach that comes with higher risks and hospital stay length time. From a societal and scientific perspective, this study aims to extend the well-documented clinical benefits of plasma technology - from external wound healing to internal ulcer treatment - within an endoscopic framework. The success of this study could pave the way for broader applications of LTP in the treatment of other endoscopically accessible conditions such as peptic ulcers, duodenal ulcers and esophageal ulcers. This advancement has the potential not only to improve patient outcomes through less invasive methods, but also to position LTP as a cornerstone in the future of gastroenterological wound management strategies.

NaviCam Patency Capsule to Verify Gastrointestinal Patency

Participants included in this study will first swallow a patency capsule and then undergo an abdominal X-ray scan within 30 hours after swallowing the capsule to confirm weather the capsule is still in the body.

Diagnostic Performance of Serum Calprotectin in Acute Appendicitis

This prospective observational study evaluated the diagnostic performance of serum calprotectin in patients presenting with acute abdominal pain and suspected acute appendicitis. Patients with histopathologically confirmed acute appendicitis were compared with patients diagnosed with nonspecific abdominal pain. Serum calprotectin levels were analyzed and compared with conventional inflammatory markers and the Alvarado score to assess their diagnostic value in acute appendicitis.

The Probiotic Study: Using Bacteria to Calm Your Mind

The investigators seek to conduct the first open-label trial of probiotics in young children to reduce their anxiety and abdominal pain. Likewise, the investigators aim to assess the feasibility and efficacy of this treatment and to elucidate the enteric microbiota in the middle-lower GI tract. Self-report measures and a laboratory task will be collected from children, ages 9-13 years of age, and self-report measures from their primary caregivers prior to and following a 30-day probiotic administration. Children who score above cutoff in anxiety and/or abdominal pain meet the inclusion criteria for this study. Because of limited sample size and the iterative nature of intervention development, criteria for success at the pilot phase are based primarily on clinical rather than statistical criteria. The study personnel will do their best to keep and ensure the privacy and confidentiality of our participants; however, some of the risks of this study may include psychological discomfort, legal risks, and loss of confidentially.

Diagnostic Performance of Low-Dose CT for Acute Abdominal Conditions

The goal of this non-inferiority observational study is to assess the diagnostic performance of low-dose CT with deep learning image reconstruction (DLIR) in adult participants with acute abdominal conditions. The main research question is: • Can low-dose CT with DLIR achieve the same diagnostic performance as standard CT for the diagnosis of acute abdominal conditions. Participants will be examined with an additional low-dose CT directly after the standard CT. Participant will be their own controls. Registration record updated on 15.05.2026 to correct entry errors (correction of sample size calculation now resulting in a larger sample size than previously stated, mixed-effects logistic regression was used for analysis of the diagnostic accuracy) so that the record reflects the study protocol in effect before enrollment of the first participant.

A Study Evaluating the Impact of Regular FODMAP-targeting Digestive Enzyme Blend Use on Gastrointestinal Symptoms in Individuals With Self-Reported Bloating

This study is a randomized, double-blind, placebo-controlled, within-individual crossover trial designed to assess the impact of regular use of a consumer-grade FODMAP-targeting digestive enzyme blend (FODZYME®) on gastrointestinal symptoms in adults with self-reported bloating.1 The study's rationale is based on the fact that fermentable carbohydrates (FODMAPs) are often poorly absorbed and can trigger symptoms like bloating and abdominal pain. While a Low FODMAP Diet (LFD) is clinically validated for symptom relief, it is restrictive. The enzyme blend is intended to offer a more flexible, enzyme-based solution by targeting and breaking down FODMAPs, such as fructan, GOS, and lactose, before they ferment in the colon. The primary objective is to evaluate the product's impact on bloating symptoms, measured by the mean PROMIS scale Gastrointestinal Gas and Bloating score. Secondary and exploratory objectives include assessing the impact on overall gastrointestinal symptom severity (IBS-SSS), abdominal pain (PROMIS Belly Pain score), food-related quality of life (FR-QoL-29), and anxiety (GAD-7 scores). The study also aims to evaluate these effects across various Irritable Bowel Syndrome (IBS) subgroups (IBS-C, IBS-D, IBS-M). The trial is a consumer-driven, decentralized research study utilizing validated patient-reported outcome measures that can be completed in a home setting.

PoCUS Impact on the Diagnostic Approach for Thoracic and Abdominal Pain in the ED

Many medical specialties and paramedical fields are increasingly using point-of-care ultrasound (PoCUS). In daily practice, thoracic and abdominal pain constitute a significant portion of emergency department consultations. PoCUS can be employed in various ways during thoracic and abdominal physical examinations. Most scientific societies advocate for its use to address specific clinical questions rather than to provide a definitive diagnosis. The integration of PoCUS into clinical examinations raises the question of its effectiveness in improving the diagnostic approach, rather than its diagnostic accuracy alone. Given the broad spectrum of differential diagnoses for thoracic and abdominal pain, this multicenter prospective study protocol aims to evaluate how PoCUS enhances the diagnostic approach for patients presenting with these symptoms in the emergency department. To assess the contribution of PoCUS, three members of an adjudication committee will blindly choose between two case report forms reporting the planned diagnostic approach for each patient: one completed before PoCUS and the other after its use by the investigator handling the case. The hypothesis that PoCUS improves the diagnostic approach by 60% will be reached if 60% of the improved diagnostic approaches favor the case report form filled out after PoCUS.

Assess Patient Readiness for Pelvic Ultrasound With the Use of Artificial Intelligence

Point-of-Care Ultrasound (POCUS) is a relatively quick and non-invasive technique to assess bladder fullness which will be provided under standard of care. The goal of this study is to assess for bladder fullness by measuring bladder volume using a handheld POCUS with AI technology to objectively determine patient readiness for pelvic ultrasound.

Online Social Learning Program for Parents With Irritable Bowel Syndrome: Raising Resilient Children

The goal of this clinical trial is to test efficacy of the REACH program in parents with irritable bowel syndrome (IBS) and their young children. The main question it aims to answer is: -How can parents with IBS help their young kids develop healthy habits? Participants will be asked to complete online surveys and to use a website. Researchers will compare results from parents who use one of two websites chosen by chance, like flipping a coin. One website focuses on child health and safety behaviors. The other website focuses on strategies to promote child wellness behaviors.

Safety and Efficacy of Carbon Dioxide Gas for Endoscopy

The goal of this clinical trial is to compare the efficacy and safety of air versus carbon dioxide gas insufflation for endoscopy in children. The main question\[s\] it aims to answer are: •to determine safety of CO2 Assess patient comfort (abdominal pain, flatulence and bloating) with CO2 use when compared to air.

The Auxiliary Effect of Artificial Intelligence in the Detection of Precancerous Lesions in Proximal Colon Cancer

The investigators conducted a multicenter randomized controlled trial to explore the adjuvant effect of artificial intelligence in the detection of precancerous lesions in the proximal colon.This is a prospective, multicenter, single-blind, parallel randomized controlled trial.During the colonoscopy retraction process, the investigators aimed to compare the detection rates of proximal colon adenomas with and without the assistance of an AI(Artificial Intelligence) diagnostic device.

Endoscopic Metabolic and Bariatric Therapies

This is a prospective collection of data from adult patients who have had an endoscopic metabolic and bariatric endoscopy procedure (EMBT) for primary or revision surgical procedures for obesity.

Objective Integrated Multimodal Electrophysiological Index for the Quantification of Visceral Pain

The objectives of the study are to 1) Conduct telemetric biosignals (EDA, ECG, and EMG) recording in healthy controls and IBS participants experiencing cutaneous and visceral pain; and 2) Validate the OIME index as a biomarker for quantifying pain in IBS participants and its capability to assess the treatment of IBS pain via an ambulatory trial.

Chronic Abdominal Pain After Laparoscopic Sleeve Gastrectomy

The study aims to evaluate the prevalence of postoperative chronic pain, defined as the persistence of abdominal pain for more than 3 months after laparoscopic sleeve gastrectomy.