Atanassova E, Bayguinov O
Acta Physiol Pharmacol Bulg. 1984;10(3):63-8.
Chronic experiments have been carried out on dogs with implanted bipolar silver ball-shaped electrodes on the muscle wall of the stomach remnant after gastric resection. It has been found that in the first group of animals with subtotal gastrectomy (the frequency of the slow potentials during late periods after the resection increases and reaches the frequency of the corpus and antrum) the spike activity is represented by small groups of low-amplitude and low-frequency spike potentials. In the second group of animals for which the resection line passes at a distance of 1 to 1.5 cm distally from the boundary between the fundus and the corpus of the stomach (the frequency of the slow potentials increases to about 4 cpm even at the end of the first postoperational week), large groups of relatively high-amplitude and high-frequency spike potentials burst with the rhythmic slow potentials. The faster and better adaptation of the stomach remnant after sparse resection (2nd group of animals) is considered to be due to the existence of part of the pacemaker area in the stomach remnant. The spike activity characterizing the myoelectric complex is a prerequisite for the realization of the evacuation function by the stomach remnant.
在胃切除术后胃残余肌壁上植入双极银球形电极的犬身上进行了慢性实验。已发现，在第一组行胃次全切除术的动物中（切除术后晚期慢电位频率增加并达到胃体和胃窦的频率），锋电位活动由小群低振幅、低频锋电位组成。在第二组动物中，切除线在胃底与胃体边界远端1至1.5厘米处通过（即使在术后第一周结束时，慢电位频率也增加到约4次/分钟），大群相对高振幅、高频锋电位与节律性慢电位一起爆发。稀疏切除术后（第二组动物）胃残余的更快且更好的适应性被认为是由于胃残余中存在部分起搏区。表征肌电复合波的锋电位活动是胃残余实现排空功能的先决条件。
