
Safety and Pharmacokinetic Study of C13-URA in Healthy Volunteers
GastroparesisThe purpose of this study is to evaluate the safety and establish the pharmacokinetic (PK) profile of C13-URA in healthy volunteers

Pyloric Sphincter Abnormalities in Patients With Gastroparesis Symptoms
GastroparesisIdiopathic Gastric Motility Disorder1 moreThe overall objective of this study is to determine if there are pyloric sphincter abnormalities in patients with gastroparesis symptoms and determine how prevalent these abnormalities are using three tests to assess the pyloric sphincter - endoluminal functional luminal imaging probe (Endoflip™), high resolution electrogastrography (hrEGG) using Gastric Alimetry™ System and water load satiety testing (WLST).

Comparison Study for Bile Reflux and Gastric Stasis in Patients After Distal Gastrectomy
Stomach CancerGastrectomyThe purpose of this study is to evaluate the degree of bile reflux and gastric stasis according the reconstruction methods after distal subtotal gastrectomy for gastric cancer, and to find out the proper method. We collect ninety patients who undergo distal gastrectomy for gastric cancers for this study from 5 institutions and randomly divide into 3 groups according to reconstruction methods: 1) Billroth-II (B-II), 2) Roux en Y gastrojejunostomy (RY-GJ) and 3) uncut Roux en Y gastrojejunostomy (uncut RY-GJ).

Daily Tadalafil and Gastric Emptying Time in Diabetic Gastroparesis
GastroparesisDiabetic Gastroparesis2 moreThe investigators hypothesize that in adult patients with diabetic gastroparesis with Type 1 diabetes (HbA1c ≤ 10.5%), daily tadalafil use will significantly improve gastric emptying compared to baseline as measured by gastric emptying time.

Gastroparesis in type2 Diabetic Patient
Diabetic GastroparesisGastroparesis is defined by objective delaying of gastric emptying without any evidence of mechanical obstruction. Diabetic gastroparesis is a potential complication that occurs in the setting of poorly controlled diabetes, resulting from dysfunction in the coordination and function of the autonomic nervous system, neurons, and specialized pacemaker cells (interstitial cells of Cajal, ICC) of the stomach and intestine, and the smooth muscle cells of the gastrointestinal tract

Gastric Pacemaker Implantation for Gastroparesis
GastroparesisGastric pacemakers and/or temporary gastric stimulators will be implanted in eligible patients.

GpCRC Pediatric Gastroparesis Registry 2
GastroparesisGastroparesis-like SyndromeThe objective of the Pediatric Gastroparesis Registry 2 is to create a national prospective registry of children, adolescents, and young adults with gastroparesis and gastroparesis-like syndrome (symptoms of gastroparesis but normal gastric emptying).

Clinical Management With SPM System and Validation of the SPM 5 Hour Cutoff in Patients With Symptoms...
GastroparesisThis protocol is designed to validate use of the SPM for diagnosis of delayed gastric emptying in patients with symptoms of gastroparesis and assess impact of a SmartPill study on patient management in the gastroparetic populations. Patients with symptoms of gastroparesis will be recruited. Patients will undergo concurrent gastric scintigraphy and SPM testing to determine the presence or absence of delayed gastric emptying based on predetermined diagnostic cutoffs for each technique.

Gastroparesis Registry 4
GastroparesisGastroparesis Nondiabetic4 moreThe Gastroparesis Registry 4 (GpR4) is an observational study of patients with symptoms of gastroparesis (Gp) and functional dyspepsia (FD) with either delayed or normal gastric emptying. To better understand these disorders, this registry will capture demographic, clinical, physiological, questionnaire, and patient outcome data to characterize the patients and their clinical course. Participants will complete several questionnaires, complete a nutrient drink test and have a gastric emptying study.

Using Point-of-Care-Ultrasound (POCUS) to Assess Gastric Contents Among Fasting Pre-operative Patients...
Delayed Gastric EmptyingGastroparesisGiven the increased prescription of GLP-1 agonists for both diabetes and obesity management and the implications of the proposed delayed gastric emptying in the setting of an anesthetic, it is critical to determine if patients taking GLP-1 agonists have an increased rate of delayed gastric emptying. The purpose of this prospective gastric ultrasound evaluation of pre-operative patients is to determine the incidence of a full stomach despite a standard pre-operative fasting period.