title: Spectral analysis of colonic intraluminal pressure in patients who received a colonic replacement following radical esophagectomy.
abstract: The aim of this study was to evaluate the motor activity of the interposed colonic segment in patients who had received a colonic replacement following radical esophagectomy using spectral analysis and a 24 hr activity graph. The 24-hr ambulatory pressure waves were recorded in the replaced colon after esophagectomy (n=8) using a solid-state manometric catheter (MicroDigitrapper, Synetics). Motility and spectral analyses of the intraluminal pressure waves were performed by Multigram and Gastrosoft (Synetics). It was revealed that after a meal the 3 cpm (cycles per minute) component of the motility index increased but the 12-15 cpm component decreased. The diurnal rhythm showed that colonic motility was high in the daytime and low during sleep. In contrast, duodenal motility was relatively high even during sleep. The motility index increased as the postoperative period increased. The motility of the replaced colon was higher during the daytime and after meals. The higher motility after meals was characterized by an increase in the 3 cpm component. These motor characteristics may help the function of the replaced colon as a substitute for the esophagus.
authors.affiliation: Digestive and General Surgery, Department of Regenerative and Transplant Medicine, Graduate School of Medical and Dental Sciences, Niigata University, Japan.
authors.forename: Naozumi
authors.initials: N
authors.lastname: Watanabe
authors.forename: Shinji
authors.initials: S
authors.lastname: Homma
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Matsuo
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Maruta
authors.forename: Jun
authors.initials: J
authors.lastname: Hasegawa
authors.forename: Katsuyoshi
authors.initials: K
authors.lastname: Hatakeyama
mesh_terms: D000368:Aged; D002404:Catheterization; D002940:Circadian Rhythm; D003106:Colon / Q000502:physiology* / Q000637:transplantation*; D004938:Esophageal Neoplasms / Q000601:surgery*; D016629:Esophagectomy; D005769:Gastrointestinal Motility; D006801:Humans; D008297:Male; D008365:Manometry / Q000379:methods; D008875:Middle Aged; D011312:Pressure