Myoelectric activity of the ileum, cecum, and right ventral colon in ponies during interdigestive, nonfeeding, and digestive periods.
Myoelectric activity of the ileum, cecum, and right ventral colon in ponies during interdigestive, nonfeeding, and digestive periods.
复制标题
小马消化间期、非进食期和消化期回肠、盲肠和右腹结肠的肌电活动。
DOI：
10.2460/ajvr.1990.51.04.561
复制
发表时间：
1990
影响因子：
1
通讯作者：
Judith A. Rutkowski
中科院分区：
文献类型：
--
作者：
M. Ross;Kenneth K. Cullen;Judith A. Rutkowski
在4匹成年小马上研究了回肠、盲肠和右腹结肠（RVC）的肌电活动。将八个Ag-AgCl双极记录电极缝合到回肠（2个电极）、盲肠（4个电极）和RVC（2个电极）的浆肌层。术后10天开始研究肌电活动。在消化间期，即早晨喂食后3至7小时，对每匹小马进行了8次60分钟的记录。在不同的日子，食物被扣留24小时，90分钟的记录，在非喂养期间获得。然后给小马喂食正常的口粮，并继续记录以获得消化（喂养）期的数据。在消化间期期间，在两个回肠电极处均观察到迁移性肌电复合体的所有阶段，包括无尖峰活动（阶段1）、不规则尖峰活动（阶段2）和规则尖峰活动（阶段3）。第2阶段占总记录时间的77%，第1、2和3阶段的平均持续时间分别为3.4 +/- 0.2、12.8 +/- 1.2和6.7 +/- 0.7 min。回肠慢波频率为11.8 +/- 0.1/min，棘波爆发传导速度为4.7 +/- 0.3 cm/s。在32个描记中的11个（34%）中观察到完整的移行性肌电复合体，平均持续时间为24.2 +/- 2.6 min。回肠移行性动作电位复合体最常见于2相，频率为4.8 +/- 0.5峰丛/h，传导速度为13.6 +/- 0.4 cm/s。（250字处删节）
Myoelectric activity of the ileum, cecum, and right ventral colon (RVC) was studied in 4 mature ponies. Eight Ag-AgCl bipolar recording electrodes were sutured to the seromuscular layer of the ileum (2 electrodes), cecum (4 electrodes), and RVC (2 electrodes). Myoelectric activity was studied beginning 10 days after surgery. Eight, 60-minute recording sessions were performed in each pony during the interdigestive period, which was the period 3 to 7 hours after the morning feeding. On separate days, food was withheld for 24 hours, and 90-minute recordings were obtained during the nonfeeding period. Ponies were then fed a normal ration, and recordings were continued to obtain data for the digestive (feeding) period. All phases of the migrating myoelectric complex were seen at both ileal electrodes during the interdigestive period, including the periods of no spiking activity (phase 1), irregular spiking activity (phase 2), and regular spiking activity (phase 3). Phase 2 occupied 77% of the total recording time, and the mean duration of phases 1, 2, and 3 was 3.4 +/- 0.2, 12.8 +/- 1.2, and 6.7 +/- 0.7 min, respectively. Frequency of ileal slow waves was 11.8 +/- 0.1/min, and spike burst conduction velocity was 4.7 +/- 0.3 cm/s. A complete migrating myoelectric complex was seen in 11 of 32 tracings (34%) and had a mean duration of 24.2 +/- 2.6 min. The ileal migrating action potential complex, most often seen in phase 2, had a frequency of 4.8 +/- 0.5 spike bursts/h and a conduction velocity of 13.6 +/- 0.4 cm/s.(ABSTRACT TRUNCATED AT 250 WORDS)