Open AccessPostoperative Electromyographic Profile in Human Jejunum
Author(s) -
C. Ducerf,
Claude Duchamp,
M Pouyet
Publication year - 1992
Publication title -
annals of surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.153
H-Index - 309
eISSN - 1528-1140
pISSN - 0003-4932
DOI - 10.1097/00000658-199203000-00007
Subject(s) - medicine , jejunum , migrating motor complex , cholecystectomy , electromyography , circadian rhythm , rhythm , anesthesia , motor activity , surgery , small intestine , physical medicine and rehabilitation
The postoperative electromyographic profile of the proximal jejunum and its evolution during recovery from surgery were defined in fasted humans after cholecystectomy. An intraluminal probe supporting four groups of bipolar electrodes was transnasally inserted at the end of surgery to allow continuous recording of jejunal electrical activity over 4 consecutive days. Electromyographic activity was characterized by an early reappearance of phase 3 of migrating myoelectric complexes (MMC) lasting 5.2 +/- 0.6 minutes and occurring at 38.1 +/- 3.1-minute intervals at day 1 after surgery. During the 4 days after surgery, there was an increased duration of MMC, mainly consisting of phase 2 occurrence with an increased duration and lengthening of the MMC cycle. The amplitude of spikes during phase 3 increased. During the postoperative period, characterized by an inversion of the circadian rhythm, the velocity of propagation was higher (p less than 0.05) between 18:00 and 06:00 (4.0 +/- 0.5 cm/minute) than between 06:00 and 18:00 (3.1 +/- 0.3 cm/minute). In contrast, the duration of phase 2 was lower during nighttime (18:00 to 06:00) than during daytime. The authors conclude that during the early (1 to 2 days) period after cholecystectomy, the jejunal electromyographic activity is limited to phase 3 activity, but that a normal fasted pattern is recovered after 4 days. A progressive reorganization and coordination of the intestinal tract may account for this delay.