title: [Oxygen utilization coefficient in predicting the severity of critical illness].
abstract: OBJECTIVE
  To evaluate the role of oxygen utilization coefficient (O(2)UC ) in predicting the severity of various diseases.
  
  
  METHODS
  Gas analysis of arterial blood and central venous blood and calculation of O(2)UC [O(2)UC = (SaO(2) - SvO(2))/SaO(2)] were carried out in different groups (group 1, 16 cases of trauma, all survived; group 2, 18 emergency cases undergoing cardiopulmonary resuscitation(CPR); group 3, 13 cases undergoing CPR in intensive care unit, all died; group 4, 13 critically ill patients.
  
  
  RESULTS
  O(2)UC was 0.30 +/- 0.08, 0.67 +/- 0.27 and 0.60 +/- 0.15 in the groups 1, 2 and 3 respectively. The difference between group 1 and 2 was significant (P < 0.001). O(2)UC persisted to increase, and maintained high for a long time (more than 8 approximately 12 hours), the prognosis of the patients was bad. The critical limitation of O(2)UC was 0.40. In group 4 O(2)UC was closely correlated with the severity of clinical condition.
  
  
  CONCLUSIONS
  O(2)UC is a convenient, reliable and sensible predictor in the treatment of critically ill patients.
authors.affiliation: Surgery Intensive Care Unit, The 304th Hospital of PLA, Beijing 100037.
authors.forename: Z
authors.initials: Z
authors.lastname: He
authors.lastname: Gulibake
authors.forename: D
authors.initials: D
authors.lastname: Chen
authors.forename: H
authors.initials: H
authors.lastname: Lin
authors.forename: Y
authors.initials: Y
authors.lastname: Zhao
authors.forename: H
authors.initials: H
authors.lastname: Meng
authors.forename: J
authors.initials: J
authors.lastname: Wang
authors.forename: Z
authors.initials: Z
authors.lastname: Shen
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001784:Blood Gas Analysis; D016887:Cardiopulmonary Resuscitation; D016638:Critical Illness; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood*; D012720:Severity of Illness Index
chemical_list: D010100:Oxygen