title: Is electrogastrography a substitute for manometric studies in children with functional gastrointestinal disorders?
abstract: We performed simultaneous fasting and fed antroduodenal manometry and EGG in 25 children with functional bowel disorders. Three patients (12%) had an uninterpretable EGG. The manometric studies showed severe neuropathy in six patients; milder neuropathic changes in five patients; postprandial hypomotility in one patient; myopathy in four patients, and normal motility in the remaining six patients. The percentage of tachygastria time (frequency > 3.5 cycles/min) was higher in the patiens with mild (44.1 +/- 15.8%) and severe (48 +/- 19.1%) neuropathy than in the patients with myopathy (20 +/- 16.2%, P < 0.05) or with normal motility (23 +/- 13.3%, P < 0.05). There was a considerable overlap in the percentage of tachygastria and total arrhythmia time among the different study groups. The ratio of post- to preprandial power was significantly higher (2.5 +/- 0.07) in children with normal motility than in the other patients groups. Every child with total arrhythmia time < 35% and a ratio of post- to preprandial power > 2.4 had normal manometry. In summary, EGG differentiated groups of children with normal manometry from others with neuropathic or myopathic changes, but in a minority of patients the study was not interpretable and there was overlap in EGG results between children with normal and abnormal manometry.
authors.affiliation: Department of Pediatrics, Children's Hospital of Pittsburgh, Pennsylvania, USA.
authors.forename: C
authors.initials: C
authors.lastname: Di Lorenzo
authors.forename: S N
authors.initials: SN
authors.lastname: Reddy
authors.forename: A F
authors.initials: AF
authors.lastname: Flores
authors.forename: P E
authors.initials: PE
authors.lastname: Hyman
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D003248:Constipation / Q000503:physiopathology; D004415:Dyspepsia / Q000503:physiopathology; D004594:Electrophysiology; D005260:Female; D005767:Gastrointestinal Diseases / Q000503:physiopathology*; D005769:Gastrointestinal Motility; D006801:Humans; D007418:Intestinal Pseudo-Obstruction / Q000503:physiopathology; D008297:Male; D008365:Manometry