Instituto interuniversitario de investigación en bioingeniería y tecnología orientada al ser humano (I3BH),Universidad Politécnica de Valencia, Camino de Vera, s/n, Ed. 8E, Acceso N, 2a, planta 46022 Valencia, Spain.
Phys Med Biol. 2010 Feb 7;55(3):663-80. doi: 10.1088/0031-9155/55/3/008. Epub 2010 Jan 13.
Myoelectrical recording could provide an alternative technique for assessing intestinal motility, which is a topic of great interest in gastroenterology since many gastrointestinal disorders are associated with intestinal dysmotility. The pacemaker activity (slow wave, SW) of the electroenterogram (EEnG) has been detected in abdominal surface recordings, although the activity related to bowel contractions (spike bursts, SB) has to date only been detected in experimental models with artificially favored electrical conductivity. The aim of the present work was to assess the possibility of detecting SB activity in abdominal surface recordings under physiological conditions. For this purpose, 11 recording sessions of simultaneous internal and external myolectrical signals were conducted on conscious dogs. Signal analysis was carried out in the spectral domain. The results show that in periods of intestinal contractile activity, high-frequency components of EEnG signals can be detected on the abdominal surface in addition to SW activity. The energy between 2 and 20 Hz of the surface myoelectrical recording presented good correlation with the internal intestinal motility index (0.64 +/- 0.10 for channel 1 and 0.57 +/- 0.11 for channel 2). This suggests that SB activity can also be detected in canine surface EEnG recording.
肌电记录可以提供一种替代技术来评估肠道动力，这在胃肠病学中是一个非常感兴趣的话题，因为许多胃肠道疾病与肠道动力障碍有关。电肠电图 (EEG) 的起搏器活动（慢波，SW）已在腹部表面记录中检测到，尽管与肠收缩相关的活动（尖峰爆发，SB）迄今为止仅在人工促进电导率的实验模型中检测到。本工作的目的是评估在生理条件下在腹部表面记录中检测 SB 活动的可能性。为此，在清醒的狗上进行了 11 次同步内部和外部肌电信号的记录。信号分析在频域中进行。结果表明，在肠道收缩活动期间，除了 SW 活动之外，还可以在腹部表面检测到 EEG 信号的高频成分。表面肌电记录的 2 到 20 Hz 之间的能量与内部肠道运动指数呈良好相关性（通道 1 为 0.64 +/- 0.10，通道 2 为 0.57 +/- 0.11）。这表明 SB 活动也可以在犬表面 EEG 记录中检测到。
