Beactivia, probiotics for digestive health

It seems likely that chronic unexplained dyspepsia includes different types of patients with distinct underlying pathophysiologies who require different management approaches. However, it has been particularly difficult to identify these subgroups reliably⁽¹⁾.

Symptom clusters-based subclasses have been proposed^(1,2). In clinical practice, however, this classification showed great overlap between subclasses, limiting its value^(1,3). Identifying the predominant symptom was shown to distinguish subgroups with different demographic and symptomatic properties and with some relationship to putative pathophysiological mechanisms like delayed gastric emptying and presence of Helicobacter pylori⁽¹⁾.

In the Fischler 's study , exploratory and confirmatory factor analysis followed by cluster analysis was used in 438 consecutive patients with FD to identify relationships between symptom clusters and pathophysiologic mechanisms⁽⁶⁾. FD proved to be a heterogeneous disorder characterized by four major subgroups based on four major dyspeptic symptoms factors, each associated with different psychopathologic and pathophysiologic mechanisms⁽⁶⁾:

• Patients with mainly complaints of nausea, vomiting, early satiety, and weight loss.
• Patients with mainly postprandial fullness and bloating.
• Patients with pain symptoms in particular.
• Patients with belching as the most prominent problem.

Subgroups 1 and 2 were characterized by delayed gastric emptying; subgroup 1 was also associated with younger age, female gender, and sickness behavior. Subgroups 3 and 4 were associated with gastric hypersensitivity; subgroup 3 was also associated with psychopathology and somatic.

The reported associations were not mutually exclusive and there was still much overlap and interaction between pathophysiologic mechanisms and clinical manifestations.