Gastric vs Jejunal Feeding in Diabetic Gastroparesis
Diabetic 'Gastroparesis' or 'Gastroenteropathy' is a condition in which patients suffer episodes of nausea, vomiting, abdominal bloating and pain after eating. These symptoms occur in the absence of any structural abnormality of the stomach, rather abnormal gastric function underlies the condition. Up to one in five patients with type I diabetes experience symptoms consistent with this diagnosis. The effects on diabetic control, physical health and emotional quality of life are severe. Patients do not respond reliably to general supportive management or conventional medications. Surgical options have disappointing results. The need for more effective treatment is acknowledged universally.
Feeding into the small bowel beyond the stomach (jejunal feeding) is established management in diabetic patients with gastroenteropathy that are malnourished due to poor oral intake. The benefits have been assumed secondary to improved nutrition and diabetic control; however this assertion has never been studied. Recently we observed that patients with severe gastroenteropathy recovered promptly and could eat normally during and for a few hours after jejunal feeding. These observations suggest that jejunal feeding has 'quasi-pharmacological' effects in patients with gastroenteropathy. One attractive explanation for these observations is that gastroenteropathy represents a failure of oral intake to 'switch' the stomach from the fasted to the fed state. According to this hypothesis, jejunal feeding 'restores' the normal fed state by bypassing the dysfunctional stomach.
This project will assess the effects of feeding on gastrointestinal (GI) sensory and motor function in diabetic gastroenteropathy. Healthy volunteers and diabetic controls without symptoms will also be investigated. Studies will assess:
- Effects on GI symptoms and function to gastric distension in fasted and fed states
- Effects on GI symptoms and function to oral vs. nasogastric delivery of a test meal
- A trial of gastric feeding with and without prior jejunal feeding on GI symptoms and function Non-invasive magnetic resonance imaging (MRI) techniques will be applied to assess complex gastric response to feeding. In addition the effects of feeding on symptoms and gastric function will be related to alterations in GI hormones and autonomic nervous activity (eg cardiovagal tone) to assess how the integrated response of the GI tract to feeding fails in patients with diabetic gastroenteropathy.
The primary aim of this project is to assess the effectiveness of jejunal feeding in the management of diabetic gastroenteropathy. However, by defining the processes that 'switch' gastric function between the fasted and the fed states and control gastric emptying, we hope also to identify candidate targets for more effective pharmacologic treatment of this severe disease.
- Trial with medical device
|Diabetic Gastroparesis||Dietary Supplement: Jejunal Feed Dietary Supplement: Normal Saline||Phase 4|
|Study Design:||Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Treatment
|Official Title:||A Randomized Controlled Trial of Gastric Meal With and Without Prior Jejunal Feeding on GI Symptoms and Response in Patients With Diabetic Gastro-enteropathy, Diabetic Controls and Healthy Volunteers|
- Improvement in symptoms of gastroparesis (GCSI score) [ Time Frame: After administration of test meal ]Comparison will be made of symptoms of gastroparesis (GCSI score) after test meal with and without prior jejunal feeding. Symptoms will be assessed after administration and at regular 15 min intervals for 120 min. An integrated score will be calculated.
- Gastric emptying rate at gastric emptying half time [ Time Frame: 120 min ]A 400ml liquid test meal will be taken. Dynamic change in gastric volume over time will be assessed using a validated 4 parameter model. Gastric emptying rate will be assessed at the time half the gastric volume has left the stomach ("gastric emptying half time")
|Estimated Study Completion Date:||January 2011|
Experimental: 300kcal liquid Nutrient
300kcal liquid nutrient delivered by NJ tube over 60 minutes before ingestion of a standard oral liquid nutrient test meal
Dietary Supplement: Jejunal Feed
Liquid nutrient (Ensure 200ml (300kcal) over 60 minutes) will be delivered by naso-jejunal feeding tube (previously placed by endoscopy)
Other Name: Ensure Vanilla, Abbott
Placebo Comparator: Normal Saline
Normal Saline delivered via NJ tube over 60 minutes ahead of a standard liquid nutrient test meal
Dietary Supplement: Normal Saline
200ml Normal Saline 0.9%
Other Name: Normal Saline 0.9%, Baxter
Please refer to this study by its ClinicalTrials.gov identifier: NCT00944593
|Study Director:||Innere Medizin: Forschungsgruppe GI-Motility||UniversitaetsSpital Zuerich|