A new Clinical Practice Update from the AGA on belching, abdominal bloating, and distention offers practical management strategies for a class of disorders that, while highly prevalent, can be confusing to clinicians because of their nonspecific and overlapping symptomatology and wide range of possible causes.
The expert review, published online in Gastroenterology, is dedicated to these specific disorders, which, when not caused by bacteria, food intolerance, or autoimmune disease, are increasingly viewed as stemming from dysregulation of the brain-gut axis, and therefore responsive to interventions such as biofeedback therapy and central nervous system modulators, including antidepressants referred to as neuromodulators due to their pain modulating effects in the gut.
Baharak Moshiree, MD, of Atrium Health, Wake Forest Medical University, Charlotte, North Carolina, the lead author, said the guidance is aimed at GI specialists as much as primary care physicians and other providers who treat patients with these disorders.
Clinicians may not always know which diagnostic studies to order for a patient with bloating, distention, or belching, Moshiree said, and since large randomized controlled trials in these patient groups are not available, making evidence-based treatment recommendations is challenging. Because the disorders are ubiquitous, "there's a lot of social media attention around them, and these include fad diets and drugs labeled as medical foods, like probiotics, that patients will often try."
