title: Intraoperative assessment of microperfusion with visible light spectroscopy in esophageal and colorectal anastomoses.
abstract: BACKGROUND
  We evaluated the technical feasibility and stability of measurements using visible light spectroscopy to measure microvascular oxygen saturation (StO(2)) in gastrointestinal anastomoses.
  
  
  METHODS
  In consecutive esophageal (n = 14) or colorectal (n = 30) resections, during which an uncomplicated anastomosis was performed, measurements of serosal StO(2) were performed during the procedure.
  
  
  RESULTS
  In esophageal resections, median (+/- standard error) StO(2) was stable before and after anastomosis in the proximal esophagus (before: 66.0 +/- 4.6, after: 68.3 +/- 6.0%) and the gastric conduit (before: 70.6 +/- 8.6, after: 69.8 +/- 8.0%). Mean colorectal StO(2) before and after anastomosis increased in the proximal part (71.3 +/- 8.4 to 76.6 +/- 8.2%; p < 0.005). Mean StO(2) in the distal part remained stable (72.4 +/- 6.6 to 74.8 +/- 6.7%).
  
  
  CONCLUSIONS
  Visible light spectroscopy is a feasible and fast method for intraoperative assessment of microperfusion of the serosa in esophageal and colorectal anastomosis. Future clinical studies will define its role in the prediction of anastomotic leakage.
authors.affiliation: Departments of Surgery, University Medical Center Groningen, Groningen, The Netherlands.
authors.forename: A
authors.initials: A
authors.lastname: Karliczek
authors.forename: D A
authors.initials: DA
authors.lastname: Benaron
authors.forename: P C
authors.initials: PC
authors.lastname: Baas
authors.forename: C J
authors.initials: CJ
authors.lastname: Zeebregts
authors.forename: A
authors.initials: A
authors.lastname: van der Stoel
authors.forename: T
authors.initials: T
authors.lastname: Wiggers
authors.forename: J T M
authors.initials: JT
authors.lastname: Plukker
authors.forename: G M
authors.initials: GM
authors.lastname: van Dam
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000714:Anastomosis, Surgical / Q000009:adverse effects; D003106:Colon / Q000098:blood supply / Q000601:surgery; D013505:Digestive System Surgical Procedures / Q000009:adverse effects / Q000379:methods*; D004947:Esophagus / Q000098:blood supply / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008833:Microcirculation; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000379:methods*; D010092:Oximetry / Q000379:methods*; D012007:Rectum / Q000098:blood supply / Q000601:surgery; D013057:Spectrum Analysis / Q000379:methods*