• Z He, Gulibake, D Chen, H Lin, Y Zhao, H Meng, J Wang, and Z Shen.
• Surgery Intensive Care Unit, The 304th Hospital of PLA, Beijing 100037.
• Zhonghua Nei Ke Za Zhi. 1999 Apr 1; 38 (4): 231-4.

ObjectiveTo evaluate the role of oxygen utilization coefficient (O(2)UC ) in predicting the severity of various diseases.MethodsGas 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.ResultsO(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.ConclusionO(2)UC is a convenient, reliable and sensible predictor in the treatment of critically ill patients.

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