title: [Change in mixed venous oxygen saturation in patients in perioperative periods of orthotopic liver transplantation and its clinical implication].
abstract: OBJECTIVE
  To observe the changes in mixed venous oxygen saturation(SvO(2))during perioperative periods of orthotopic liver transplantation (OLT), and explore its clinical significances.
  
  
  METHODS
  Twenty patients in terminal stage of hepatic cirrhosis were scheduled for OLT under combined general anesthesia. Vigilance monitor (Edwards, USA) was employed to monitor perioperative SvO(2), oxygen delivery (DO(2)), oxygen consumption(VO(2)), oxygen extraction rate (ERO(2)) and body temperature, cardiac output (CO), and mean arterial blood pressure (MAP).
  
  
  RESULTS
  Compared with the preoperative stage, SvO(2) elevated during 15 minutes of anhepatic stage (P<0.05), but decreased significantly during 30 minutes compared to that during 15 minutes of anhepatic stage. Then it was elevated significantly at 30 minutes after the reperfusion of the graft and at the end of operation (all P<0.05). Both DO(2) and VO(2) were decreased significantly during the anhepatic phase (both P<0.05), and increased significantly after graft reperfusion (all P<0.05); ERO(2) increased significantly after graft reperfusion (P<0.05). The level of SvO(2) was correlated with VO(2) significantly at each stage (all P<0.05), but not with DO(2) and hemoglobin (all P<0.05). SvO(2) was correlated well with CO before operation (P<0.05), but not at the other time points (all P>0.05).
  
  
  CONCLUSIONS
  Monitoring SvO(2) continually is of clinical significance in patients during OLT.
authors.affiliation: Department of Anaesthesiology, Third Affiliated Hospital of Sun Yat Sen University, Guangzhou 510630, Guangdong, China.
authors.forename: De-zhao
authors.initials: DZ
authors.lastname: Liu
authors.forename: Zi-qing
authors.initials: ZQ
authors.lastname: Hei
authors.forename: Xin-zhi
authors.initials: XZ
authors.lastname: Chen
authors.forename: Chen-fang
authors.initials: CF
authors.lastname: Luo
authors.forename: Xiao-liang
authors.initials: XL
authors.lastname: Gan
authors.forename: Shang-rong
authors.initials: SR
authors.lastname: Li
authors.forename: Gang-jian
authors.initials: GJ
authors.lastname: Luo
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D006801:Humans; D016031:Liver Transplantation / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative; D010100:Oxygen / Q000097:blood*; D010101:Oxygen Consumption
chemical_list: D010100:Oxygen