Laboratory Studies
- Hematology and chemistry tests to exclude anemia secondary to bleeding caused by esophageal or gastric ulceration and electrolyte imbalances due to the rumination and loss of essential electrolytes
Imaging Studies
- Barium swallow to demonstrate any of the following:
- Hiatal hernia
- Esophageal atresia or other malformations
- Stricture
- Achalasia
- Chalasia
- Upper GI series and small bowel follow-through examination to diagnose the following:
- Duodenal ulcer
- Other intestinal lesions
- Esophagogastroduodenoscopy, including cultures for Helicobacter pylori
- Scintigraphic studies of gastric emptying
- Radiological studies
Other Tests
- Extensive and invasive GI testing rarely is indicated but may include the following:
- GI manometry[5]
- Upper GI motility
- Gastric emptying
- Lower esophageal sphincter pressure
- Trial of histamine 2 (H2) blockers, metoclopramide, or antacids to rule out underlying causes of rumination when more invasive medical investigation is not possible
Procedures
- Perform 24-hour esophageal pH monitoring to exclude GER.
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