Gastroparesis Diagnosis and Management
Diagnostic Criteria
- The American Gastroenterological Association recommends that gastroparesis diagnosis requires three essential components: appropriate symptoms, documented delayed gastric emptying on objective testing, and absence of mechanical obstruction in the stomach or small intestine 1, 2
- Symptoms of gastroparesis include nausea, vomiting, postprandial abdominal fullness, early satiety, bloating, and upper abdominal pain, as defined by the American Gastroenterological Association 1, 2, 3
Diagnostic Testing Algorithm
- The American Gastroenterological Association suggests that upper endoscopy must be performed first to exclude structural causes including mechanical obstruction, inflammatory conditions, or malignancy before proceeding with functional testing 4, 5
- The American Gastroenterological Association recommends that gastric emptying scintigraphy should be performed for a minimum of 4 hours to provide higher diagnostic yield and accuracy 1, 4
- The American Gastroenterological Association suggests that 13C-octanoate breath testing is a non-radioactive alternative that correlates well with scintigraphy 1, 4
Treatment Options
- The American Gastroenterological Association recommends small, frequent meals with lower fat and fiber content as a first-line dietary management approach 4
- The American Gastroenterological Association suggests that metoclopramide is an FDA-approved prokinetic agent for diabetic gastroparesis, but with a major caveat of risk of tardive dyskinesia and extrapyramidal symptoms 3, 4
- The American Gastroenterological Association recommends that antiemetic agents such as phenothiazines, 5-HT3 antagonists, and NK-1 receptor antagonists should be considered for nausea and vomiting 3, 4
Disease Classification
- The American Gastroenterological Association suggests that patients should be classified as mild, moderate, or severe based on symptoms and gastric emptying study results to guide treatment intensity 3