Abstract: The purpose of this study was to determine the gastric electrical activity and motility in obstructive jaundice and stress rat. 41 adult SD rats were used and divided into 4 groups, i.e. sham operation , obstructive jaundice, sham operation stress and obstructive jaundice with stress group. The gastric electrical activity and motility were recorded at same time. Gastric electrical slow wave frequence and motive frequence were increased significantly in obstructive jaundice rat. After cold restrain stress, the amplitute of motility was increased and frequency was decreased obviously. The clustered contractions could be observed in the obstructive jaundice rat. The result suggested that gastric dysrythmias and high frequent clustered contraction may be physical basis of gastric motor dysfunction in obstructive jaundice and stress.

Key words: gastric electricity, motility, obstructive jaundice