Mintchev M P, Stickel A, Bowes K L
Department of Surgery, University of Alberta, Edmonton, Canada.
Dig Dis Sci. 1997 Jun;42(6):1154-7. doi: 10.1023/a:1018829402171.
This study was undertaken to investigate the correlation between power dynamics of gastric electrical activity (GEA) assessed with different recording techniques. A total of seven eight-channel 1-hr combined recordings were obtained from three subjects in five consecutive postoperative days. Four channels were recorded from bipolar electrodes implanted into the gastric antral wall, and four channels were electrogastrographic (EGG). Six pairs of bipolar electrodes were inserted into the antral wall (three anterior; three posterior) of 16 anaesthetized dogs. Fourteen-channel (six internal GEA and eight EGG) 1/2-hr recordings were obtained from each dog. Sets of power values calculated from channel pairs (internal, EGG or mixed) were cross-correlated and the significance of the obtained correlation coefficients was examined (P < 0.05). The majority of power correlations of internal GEA channel pairs, and those of mixed (internal GEA-EGG) channel pairs were insignificant. These findings question the claims that EGG power dynamics mirrors the power dynamics of internal GEA.
本研究旨在探讨采用不同记录技术评估的胃电活动（GEA）功率动力学之间的相关性。在连续五个术后日，从三名受试者身上总共获得了七次八通道1小时的联合记录。四个通道通过植入胃窦壁的双极电极进行记录，另外四个通道为胃电图（EGG）记录。将六对双极电极插入16只麻醉犬的胃窦壁（三个在前；三个在后）。从每只犬身上获得14通道（六个内部GEA和八个EGG）半小时的记录。对从通道对（内部、EGG或混合）计算出的功率值集进行互相关分析，并检验所得相关系数的显著性（P < 0.05）。大多数内部GEA通道对以及混合（内部GEA - EGG）通道对的功率相关性不显著。这些发现对关于EGG功率动力学反映内部GEA功率动力学的说法提出了质疑。
