【摘要】 本文报告一种新的胃肠电活动类型,其特征为,断续发放的锋电簇沿小肠超速(58.8±28.6cm/秒)扩布,锋电簇可发生于小肠慢波的不同部位,且对慢波呈强烈抑制。根据小肠锋电簇的发放与胃锋电活动的关系,可将其分为两类,即Ⅰ型和Ⅱ型。超速扩布锋电簇可在禁食狗自发产生,也可在32.7%实验中被红霉素诱发而产生。这类活动可持续250分钟以上逐步转化成移行性综合肌电活动,也可因进食而转化成消化期电活动。因此,超速扩布锋电簇是狗消化间期中未被描述过的一种新的胃肠电活动类型。更多还原

【Abstract】 The present study reports a new pattern of electrical activity of the gastrointestinal tract,which is chara- cterized by both of the discrete spike bursts that migrate down on the small intestine at an ultra-rapid speed(58.8± 28.6cm/sec.)and the much inhibited slow wave of the intestine,and which we call‘Ultra-rapid Propating Bursts of Spikes(UPBS)”.This pattern of electrical activity could be classified into 2 types.The Type Ⅰ is characte- rized by special intestinal spike acti- vity periods of 3.1±1.3minutes which are caused by one burst of spikes in the stomach.The Type Ⅱ is character is that the gastric spike bursts initiate the ultra-rapid spikes in the intestine one by one. The UPBS occurred spontaneously in 4 fast dogs(5 times),and were induced by Erythromycin at doses of, at least 200ug/kg,in 32.7% trials(18 times).The UPBS’s activity may last more than 250 minutes,and then spontaneously transfer into Migrating Myoelectric Complex(MMC),or be replaced by the digestive activity pattern after feeding.We conclude that the UPBS may be a different myo-electric pattern of the gastro- intestinal tract from MMC,in the interdigestive state of dogs.更多还原