Gastric myoelectrical activity in a population of healthy Croatian subjects.

Myoelectrical activity of the stomach was estimated in healthy Croatian subjects using the latest multi-channel percutaneous electrogastrograph. The aim of the study was to determine normal values of gastric myoelectrical activity for the population of Croatia. The study included 120 healthy subjects of both sexes, various age groups, body mass index values, and mode of lead placement. The measurement was performed 60 min before and 60 min after test meal. The following parameters of gastric myoelectrical activity were analyzed: dominant frequency (DF, c/min); dominant frequency within normal range (DFNR, %); coefficient of variation for dominant frequency (CVDF); dominant strength (DS, mV); postprandial increase intensity in dominant strength (PPIIDS; %); bradygastria (c/min, %); tachygastria (c/min, %); and arrhythmia. DF for the study group as a whole was around 3 cpm, at the normal range midpoint, and all other parameters were within the normal limits. On postprandial measurement, the rate of arrhythmias showed a significant decline. Age was found to influence DF, CVDF and arrhythmia in preprandial but not in postprandial period, whereas sex influenced DF, DS and bradygastria in preprandial period, and DF, CVDF, PPIIDS and tachygastria in postprandial period. The mode of lead placement had no impact on the electrogastrographic parameters observed. The values of gastric myoelectrical activity recorded in healthy Croatian subjects were within the normal range of the values defined by previous studies across Europe.