Management of Bloating in Patients with Known Gastritis

Diagnostic Considerations

The American Gastroenterological Association recommends differentiating between true abdominal distention and bloating, as they have different underlying mechanisms 1
Evaluate for potential underlying mechanisms, including food intolerances, such as carbohydrate malabsorption, which can contribute to bloating 2, 3
Small intestinal bacterial overgrowth (SIBO) is a potential underlying mechanism for bloating, and can be diagnosed using breath testing 2
Abdominophrenic dyssynergia (APD) and visceral hypersensitivity are also potential underlying mechanisms for bloating 3, 4

A short-term elimination diet can help identify food intolerances and reduce bloating symptoms 2, 3
The American Gastroenterological Association recommends a low-FODMAP diet for patients with suspected carbohydrate intolerance 5, 3
Fructose intolerance is a common cause of bloating, affecting 60% of patients with digestive disorders 3

Diaphragmatic breathing exercises can reduce vagal tone and sympathetic activity, and are particularly effective for APD 6, 4, 3
Brain-gut behavioral therapies, including cognitive behavioral therapy (CBT) and gut-directed hypnotherapy, can help manage bloating symptoms 3

Rifaximin, a non-absorbable antibiotic, can be effective in treating SIBO-related bloating 2, 3
Central neuromodulators, such as tricyclic antidepressants, can help manage visceral hypersensitivity-related bloating 3
Secretagogues, such as lubiprostone, can help manage constipation-associated bloating 5, 3

Breath testing for hydrogen, methane, and CO2 can help identify carbohydrate intolerances or SIBO 2, 3
Anorectal physiology testing can help diagnose pelvic floor disorders that may contribute to bloating 5, 1
Integrated care involving gastroenterologists, gastroenterology dietitians, and brain-gut behavioral therapists is recommended for refractory cases 6, 7, 8

Avoid attributing all abdominal distention to gas accumulation, as even small increases in intraluminal gas can trigger significant distention in patients with APD 1
Prolonged dietary restrictions without benefit can lead to malnutrition, and should be avoided 5
Probiotics are not recommended for bloating, as evidence does not support their efficacy 1

Lying down for 30 minutes after meals can delay gastric emptying and reduce symptoms of bloating, as recommended by Obesity Reviews, with a moderate level of evidence 9, 10
Avoid drinking fluids until at least 30 minutes after meals to prevent further gastric distension, according to Obesity Reviews, with a moderate level of evidence 9, 11

Dietary supplements that increase food viscosity, such as guar gum, pectin, and glucomannan, can help slow gastric emptying and provide relief, though they may cause gas and bloating in some patients, as reported by Obesity Reviews, with a low level of evidence 9, 10
These supplements should be used cautiously with adequate fluid intake to prevent choking hazards, as advised by Obesity Reviews, with a moderate level of evidence 10