[Use of transcutaneous electrogastrography in the diagnostics of digestive tract diseases]

Abstract

Transcutaneous electrogastrography (EGG) is the only non-invasive method of gastric myoelectric activity assessment which allows to evaluate slow wave activity and peak potentials of gastric contractions. During single channel analysis dominant frequency of slow waves (DF) is assessed, dominant power (DP), difference of DF and DP before and after the meal, percentage of normo-, brady- and tachygastry, ratio of dominant postprandial activity to preprandial acivity (power ratio--PR) and dominant frequency instability coefficient--DFIC). Multichannel EGG let us to assess myoelectric activity of different parts of stomach during one analysis. Transcutaneous electogastrography allows only for indirect evaluation of motoric disorders and needs many more studies to more precise assessment of its clinical use in gastroenterological diagnostics.