Condon R E, Cowles V E, Ferraz A A, Carilli S, Carlson M E, Ludwig K, Tekin E, Ulualp K, Ezberci F, Shoji Y
Department of Surgery, Medical College of Wisconsin, Milwaukee, USA.
Am J Physiol. 1995 Sep;269(3 Pt 1):G408-17. doi: 10.1152/ajpgi.1995.269.3.G408.
Colon smooth muscle electrical control (ECA) and response activities (ERA) were recorded for up to 4 wk postoperatively for 48 patients after major abdominal operations. Bipolar electrodes were implanted into right and left colon circular muscle and exteriorized through the flanks, and signals were tape recorded for 2-24 h daily beginning on the 1st postoperative day. A computer program was used for data reduction and analysis. Recorded signals were digitized and filtered. The ECA frequency components were identified by fast Fourier transformation, and their relative tenancy in low, mid, and high frequency ranges was determined. Short and long ERA burst duration and frequency and number and velocity of propagating long ERA bursts were determined. ECA was omnipresent and exhibited a downshift of the dominant frequency from the mid to the low range as recovery from postoperative ileus progressed. Concurrently, first in the right and then in the left colon, the frequency of long ERA bursts increased, followed by the appearance of propagating long ERA. After the 6th postoperative day, no further significant changes in parameters of colon electrical activity occurred with time.
对48例接受腹部大手术的患者术后长达4周记录结肠平滑肌电控制活动（ECA）和反应活动（ERA）。将双极电极植入左右结肠环行肌并经侧腹引出，从术后第1天开始每天用磁带记录信号2 - 24小时。使用计算机程序进行数据简化和分析。记录的信号进行数字化和滤波处理。通过快速傅里叶变换确定ECA频率成分，并确定其在低频、中频和高频范围内的相对占有率。确定短和长ERA爆发持续时间、频率以及长ERA爆发的传播数量和速度。ECA普遍存在，并且随着术后肠梗阻的恢复，主导频率从中频范围向低频范围下移。同时，先是右结肠，然后是左结肠，长ERA爆发频率增加，随后出现传播性长ERA。术后第6天之后，结肠电活动参数随时间未再发生进一步显著变化。
