title: Current status of multichannel electrogastrography and examples of its use.
abstract: Electrogastrography (EGG) is a non-invasive diagnostic motility for recording gastric myoelectrical activity. Gastric myoelectrical activity was first recorded in 1922. Advances in recording equipment enabled widespread use of cutaneous EGG after 1985. Later, introduction of multichannel EGG (M-EGG) enabled measurement of electrical activity transmission. At present, M-EGG findings are used as objective indicators of gastric motility disorders caused by various diseases. EGG measures two categories of gastric electrical activity: electrical response activity, or spike potentials; and electrical control activity, or slow waves. The appearance of abnormal rhythmic electrical activity is indicative of abnormalities in gastric motility. The normal frequency range of gastric electrical activity (normogastria) is around 3 cycles per?min. Multiple EGG parameters assist in the assessment of gastric myoelectrical activity, and significant correlations between EGG and other gastric motility tests have been demonstrated in many studies. In Japan, however, EGG remains in the exploratory stage, and its clinical use is limited. There are large variations in procedures and systems used in previous studies, thus there is a need for standardization of EGG procedures and technical terminology. Here, we outline the current status of EGG and report the M-EGG procedures used in our department in addition to our M-EGG findings.
authors.affiliation: Department of Digestive Surgery, Kawasaki Medical School, Japan.
authors.forename: Haruaki
authors.initials: H
authors.lastname: Murakami
authors.forename: Hideo
authors.initials: H
authors.lastname: Matsumoto
authors.forename: Daisuke
authors.initials: D
authors.lastname: Ueno
authors.forename: Akimasa
authors.initials: A
authors.lastname: Kawai
authors.forename: Takaaki
authors.initials: T
authors.lastname: Ensako
authors.forename: Yuko
authors.initials: Y
authors.lastname: Kaida
authors.forename: Toshiya
authors.initials: T
authors.lastname: Abe
authors.forename: Hisako
authors.initials: H
authors.lastname: Kubota
authors.forename: Masaharu
authors.initials: M
authors.lastname: Higashida
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nakashima
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Oka
authors.forename: Hideo
authors.initials: H
authors.lastname: Okumura
authors.forename: Atsushi
authors.initials: A
authors.lastname: Tsuruta
authors.forename: Masafumi
authors.initials: M
authors.lastname: Nakamura
authors.forename: Toshihiro
authors.initials: T
authors.lastname: Hirai
mesh_terms: D000075202:Contraindications; D003938:Diagnostic Techniques, Digestive System / Q000295:instrumentation*; D004576:Electromyography / Q000295:instrumentation* / Q000379:methods* / Q000639:trends; D005743:Gastrectomy; D005769:Gastrointestinal Motility; D006801:Humans; D062407:Meals / Q000502:physiology; D009130:Muscle, Smooth / Q000503:physiopathology; D013270:Stomach / Q000503:physiopathology*; D013272:Stomach Diseases / Q000175:diagnosis* / Q000503:physiopathology*; D016683:Supine Position; D014630:Vagus Nerve