Active clinical trials for "Gastroesophageal Reflux"

Study Hypothesis: This study is designed as an integral part of the development of new or improved features or components of the Bravo® pH Monitoring System and may serve verification and validation purposes. The study population will include symptomatic patients with known or suspected gastroesophageal reflux disease Symptomatic patients will undergo invasive procedure, including Bravo capsule delivery, positioning and attachment. Confirmation of capsule attachment may be done endoscopically. These procedures will serve to evaluate overall system performance in actual clinical setup, for instance: ergonomics and performance of delivery device, capsule transmission etc. Physician may be asked to provide feedback on the procedure and/or document their activities during the procedure.

Does baseline impedance measured during the landmark phase of esophageal High resolution impedance manometry HRIM correlates with direct mucosal impedance measurement and discriminates GERD from non GERD patients?

Gastroesophageal reflux events generally happen during relaxation of lower esophageal sphincter. This relaxation is a reflex that is triggered by gastric stimuli. The investigators hypothesize that abnormal relaxation of the gastric wall after a meal may lead to reflux events. To test this hypothesis, a study was designed to measure the gastric accommodation in patients undergoing esophageal impedance monitoring.

This is an observational, prospective and pilot study to determine through confocal endomicroscopy diagnostic microscopic features detectable at the gastroesophageal junction of patients with non-erosive gastroesophageal reflux disease. The hypothesis is that minimal mucosal changes occur in non-erosive gastroesophageal reflux disease. Although these minimal changes are not always visible on white-light endoscopy, it is detectable using high-resolution confocal endomicroscopy and these confocal features are diagnostic of non-erosive reflux disease (NERD).

The purpose of this study is to evaluate the demographics, patients symptoms, and findings during endoscopy. Patients presenting for an endoscopy procedure to the KCVA GI endoscopy suite, will be asked to fill out questionnaires pertaining to their symptoms and indications for the procedure. This will be done before their procedure during the interview period preceding endoscopy. The patient's answers to this questionnaire will aid us in determining the prevalence of gastric and esophageal disease in patients presenting with the complaints of dyspepsia, GERD, or extraesophageal symptoms and to also determine whether the presence of any factors (hiatal hernia, NSAID use, age, race, gender, etc.) contribute to the above endoscopic diagnoses.

This study is being done to determine if people with and without GERD or trouble swallowing have increased esophageal mucosa impedance (food getting into the esophageal tissue).

Gastric distress is a common phenomenon in our society. Heartburn and regurgitation occur daily in about 7% of the adult population,weekly 14-20% pf the adults and monthly in 34-44% of adults. The yearly prevalence of recurrent stomach complaints are frequent reason for consulting a primary care physician and are an important reason for using OTC medication. A good diagnosis is important as functional GERD with possible complications such as strictures and Barrett's esophagus or ulcer disease with life threatening complications such as bleeding & perforations. The clinical diagnosis of reflux disease is mainly based on symptom evaluation. This, however, is hindered by the variety of complaints with different etiology. Treatment with a proton pump inhibitor can be used to confirm the diagnosis reflux disease. A major part of the patients with acid related stomach complaints indeed will experience symptom relief after starting PPI therapy. In this view, it is important to identify these patients who will react on treatment with PPI in quick, accurate, non-invasive and cheap manner. The Reflux Impact Scale (RIS) is validated, short, self explanatory questionnaire which asks for the presence & impact of reflux symptoms. The RIS is developed for PCP to aid in the evaluation & selection of these patient who will profit from treatment with PPI. The aim of this present study is to determine which questions of the RIS can be predictive for reaching treatment success with PPI. Treatment success is determined by asking for patients' satisfaction & completion of the McMaster Overall Treatment Evaluation Heartburn questionnaire.

Noncardiac chest pain (NCCP) is a common clinical problem worldwide. In Hong Kong, it has been estimated that about 20% of patients with chest pain are misdiagnosed to have coronary heart disease. Despite its benign nature, this condition causes anxiety, impairs quality of life and consumes a substantial amount of healthcare resources. While acid reflux and motility disorder in the esophagus are often attributed as the cause of NCCP, visceral hyperalgesia of esophagus is now recognized to play a central role in the pathogenesis of this condition. This research project aims to evaluate the role of visceral hyperalgesia in Chinese patients with NCCP. NCCP patients will be evaluated for the prevalence of gastroesophageal reflux disease and esophageal motility disorder by endoscopy, manometry and pH study. The visceral sensory and pain thresholds of these patients will be compared with asymptomatic controls.

In recent years, there is an increasing trend in the number of patients with Gastroesophageal reflux disease (GERD). The poor response to medicine was noticed in patients with non-erosive reflux disease. According to the theory of traditional Chinese medicine, acupuncture Neiguan (P6 point) could improve the uncomfortable symptoms of the chest and upper abdomen. Therefore, the aim of this study is to investigate the clinical efficacy of Neiguan (P6 point) acupressure in patients with GERD.

This study is designated to test the safety and initial efficacy of the LunGuard's PFT device for reduction of GER. Enterally-Fed, Sedated and Mechanically Ventilated Critically Ill Patients in the ICU will have the PFT positioned in them and used for feeding of a Nutritional Formula.Samples will be taken by suction on predetermined intervals and analysed for Pepsin A concentration. The PFT will be removed upon completion of the study's scheduled routine. Patients in the control group will have a standard polyurethane nasogastric device inserted according to standard procedure, which is considered the gold standard.