title: Monitoring postprandial size of the proximal stomach by ultrasonography.
abstract: The purpose of this study was to develop a sonographic method to monitor postprandial size of the proximal stomach. Twenty-three healthy persons were scanned in a sitting position with a 3.25 MHz transducer after ingestion of 500 ml meat soup. The area in a sagittal section and the maximal diameter in an oblique frontal section were chosen as standard measurements. The soup emptied from the proximal stomach in a linear manner (r = 0.99) and at a rate of 2.0 +/- 1.3%/min. Intraobserver error of the scans (mean +/- SD) was 5.6% +/- 2.3% and 9.5% +/- 4.5% for sagittal area and frontal diameter, respectively, and the corresponding interobserver error was 5.3% +/- 4.0% and 8.3% +/- 5.3%, respectively. This sonographic method demonstrated a moderate day-to-day variation, had low intra- and interobserver error, and allowed estimation of initial emptying fractions of the proximal stomach.
authors.affiliation: Medical Department A, Haukeland University Hospital, Bergen, Norway.
authors.forename: O H
authors.initials: OH
authors.lastname: Gilja
authors.forename: T
authors.initials: T
authors.lastname: Hausken
authors.forename: S
authors.initials: S
authors.lastname: Odegaard
authors.forename: A
authors.initials: A
authors.lastname: Berstad
mesh_terms: D000328:Adult; D004435:Eating; D005260:Female; D005746:Gastric Emptying / Q000502:physiology; D005748:Gastric Fundus / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D008991:Monitoring, Physiologic; D015588:Observer Variation; D011187:Posture; D015203:Reproducibility of Results; D013270:Stomach / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D014057:Tomography, X-Ray Computed; D014463:Ultrasonography