[Gastroenterological function tests in the GP's office]

Area of Science:

• Gastroenterology
• Diagnostic Medicine

Background:

• Gastrointestinal symptoms like diarrhea, bloating, and nausea are common.
• Accurate diagnosis of underlying causes is crucial for effective treatment.

Purpose of the Study:

• To highlight the utility of various noninvasive diagnostic tests for gastrointestinal disorders.
• To explain the applications of H2 breath tests, 24-hour pH-metry, and other function tests.

Main Methods:

• Hydrogen (H2) breath testing for carbohydrate malabsorption, transit time, and small intestinal bacterial overgrowth.
• 24-hour pH-metry for measuring esophageal and gastric acidity to diagnose reflux disease.
• Serum beta carotene levels and fecal pancreatic elastase determination for fat malabsorption and pancreatic insufficiency.

Main Results:

• H2 breath tests are effective for diagnosing carbohydrate malabsorption, assessing upper gastrointestinal absorptive capacity, orocecal transit time, and detecting small intestinal bacterial overgrowth.
• 24-hour pH-metry accurately diagnoses conditions like reflux disease.
• Serum beta carotene and fecal elastase tests aid in identifying fat malabsorption and pancreatic insufficiency.

Conclusions:

• Noninvasive tests like H2 breath tests, pH-metry, and specific biochemical markers are valuable tools in gastroenterology.
• These diagnostic methods enable precise identification of various functional gastrointestinal disorders and malabsorption syndromes.