title: Multichannel electrogastrography (EGG) in normal subjects: a multicenter study.
abstract: The aim of this study was to record gastric myoelectric activity using multichannel electrogastrography (EGG) and to determine if there are differences due to age, gender, body mass, and study location. In 61 normal subjects from four centers, fasting multichannel EGG was recorded for 1 h, followed by two 1-h postprandial recordings after a test meal. Variables assessed included dominant frequency (DF) and its power, percentage time in 2- to 4-cpm frequency, and percentage slow-wave coupling (%SWC). There were no significant differences in EGG parameters with respect to gender or age. Subjects with a BMI > 25 had a decrease in the absolute DF power but a similar increase in the postprandial DF power. Subjects with a BMI > 25 had a postprandial decrease in the %SWC compared to those with a BMI < 25. There was a decrease in postprandial %SWC in European/Asian centers compared to American centers. In conclusion, multichannel EGG provides assessment of electrical slow-wave coupling in addition to determining dominant frequency, power, and percentage normal rhythm. This multicenter study of normal subjects shows similar multichannel EGG values among different genders and ages. Body mass and ethnicity may impact on some of the EGG values.
authors.affiliation: Temple University School of Medicine, Philadelphia, Pennsylvania, PA 19140, USA.
authors.forename: Hrair P
authors.initials: HP
authors.lastname: Simonian
authors.forename: Kashyap
authors.initials: K
authors.lastname: Panganamamula
authors.forename: Henry P
authors.initials: HP
authors.lastname: Parkman
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Xu
authors.forename: Jiande Z
authors.initials: JZ
authors.lastname: Chen
authors.forename: Greger
authors.initials: G
authors.lastname: Lindberg
authors.forename: Hui
authors.initials: H
authors.lastname: Xu
authors.forename: Chi
authors.initials: C
authors.lastname: Shao
authors.forename: Mei-Yun
authors.initials: MY
authors.lastname: Ke
authors.forename: Michael
authors.initials: M
authors.lastname: Lykke
authors.forename: Per
authors.initials: P
authors.lastname: Hansen
authors.forename: Bjorn
authors.initials: B
authors.lastname: Barner
authors.forename: Henrik
authors.initials: H
authors.lastname: Buhl
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000704:Analysis of Variance; D015992:Body Mass Index; D004576:Electromyography / Q000379:methods*; D005260:Female; D005746:Gastric Emptying / Q000502:physiology*; D005769:Gastrointestinal Motility / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016065:Myoelectric Complex, Migrating; D011336:Probability; D011446:Prospective Studies; D012016:Reference Values; D012680:Sensitivity and Specificity; D012737:Sex Factors