Relationship between antral distension and postprandial symptoms in functional dyspepsia

Figure 1 Antral volume measurements and their transformations. A: Patients referring postprandial drowsiness during the study period; B: Patients not referring symptoms during the study period. Open quadrangle: current antral volume; asterisk: antral volume delta variation between two consecutive measurements; Closed quadrangle: mean weighted antral volume; Closed triangle: maximal antral volume; Open triangle: antral volume value at the preceding time intervals.