title: Intraoperative changes of mucosal pCO2 during gastric tube formation.
abstract: The formation of a gastric tube after esophagectomy with ligation of the left gastric artery and resection of the lesser curvature is associated with microcirculatory changes, especially in the anastomotic region of the fundus. This influences the healing of the esophagogastrostomy. The presented prospective protocol was designed to assess continuous tonometry as a tool to demonstrate microcirculatory changes during gastric tube formation. In 15 patients with esophageal carcinoma, pCO2 of the gastric mucosa (pCO2i) was measured intraoperatively during formation of a gastric tube. This was done by a nasogastric tube with a silicon balloon connected to a Tonocap recirculating gas analyser. pCO2i measurements were compared for a period of 90 min before and after ligation of the left gastric artery and correlated to the corresponding end expiratory pCO2 (pCO2e). In 14 of 15 patients examined (93.3%), an increase of pCO2i after ligation of the left gastric artery was demonstrated. pCO2i (mean+/-SD) before ligation of the left gastric artery (87 measurements: 40.6+/-7.5 mmHg; range, 29-67 mmHg) was significantly lower (P<0.001) compared to the mean pCO2i after ligation of the left gastric artery (88 measurements: 49.1+/-10.2 mmHg; range, 31-79 mmHg). Continuous tonometry is a valid method to detect changes in mucosal pCO2 during gastric tube formation and should be assessed to monitor the gastric interposition graft during the postoperative course.
authors.affiliation: Department of Visceral and Vascular Surgery, University of Cologne, Joseph-Stelzmann-Str. 9, 50931 Cologne, Germany. Wolfgang.Schroeder@Uni-Koeln.de
authors.forename: W
authors.initials: W
authors.lastname: Schröder
authors.forename: D
authors.initials: D
authors.lastname: Stippel
authors.forename: K T
authors.initials: KT
authors.lastname: Beckurts
authors.forename: M
authors.initials: M
authors.lastname: Lacher
authors.forename: C
authors.initials: C
authors.lastname: Gutschow
authors.forename: A H
authors.initials: AH
authors.lastname: Hölscher
mesh_terms: D000230:Adenocarcinoma / Q000601:surgery; D000328:Adult; D000368:Aged; D000714:Anastomosis, Surgical / Q000009:adverse effects; D002245:Carbon Dioxide / Q000097:blood*; D002294:Carcinoma, Squamous Cell / Q000601:surgery; D002445:Celiac Artery / Q000033:anatomy & histology / Q000601:surgery; D002985:Clinical Protocols; D004938:Esophageal Neoplasms / Q000601:surgery; D004946:Esophagostomy / Q000009:adverse effects / Q000379:methods*; D005260:Female; D005753:Gastric Mucosa / Q000098:blood supply*; D005774:Gastrostomy / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D008026:Ligation / Q000009:adverse effects; D008297:Male; D008365:Manometry / Q000379:methods*; D008833:Microcirculation; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000379:methods*; D014945:Wound Healing
chemical_list: D002245:Carbon Dioxide