Murakami Haruaki, Matsumoto Hideo, Ueno Daisuke, Kawai Akimasa, Ensako Takaaki, Kaida Yuko, Abe Toshiya, Kubota Hisako, Higashida Masaharu, Nakashima Hiroshi, Oka Yasuo, Okumura Hideo, Tsuruta Atsushi, Nakamura Masafumi, Hirai Toshihiro
Department of Digestive Surgery, Kawasaki Medical School, Japan.
J Smooth Muscle Res. 2013;49:78-88. doi: 10.1540/jsmr.49.78.
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.
胃电图（EGG）是一种用于记录胃肌电活动的非侵入性诊断性动力检查方法。胃肌电活动于1922年首次被记录下来。1985年以后，记录设备的进步使得体表胃电图得以广泛应用。后来，多通道胃电图（M-EGG）的引入使得能够测量电活动的传导。目前，M-EGG的检查结果被用作各种疾病所致胃动力障碍的客观指标。胃电图测量两类胃电活动：电反应活动，即锋电位；以及电控制活动，即慢波。异常节律性电活动的出现提示胃动力异常。胃电活动的正常频率范围（正常胃电）约为每分钟3次周期。多个胃电图参数有助于评估胃肌电活动，并且许多研究已经证实胃电图与其他胃动力检查之间存在显著相关性。然而，在日本，胃电图仍处于探索阶段，其临床应用有限。以往研究中所使用的程序和系统存在很大差异，因此需要对胃电图程序和技术术语进行标准化。在此，我们概述胃电图的现状，并报告我们科室所使用的M-EGG程序以及我们的M-EGG检查结果。
