RESUMO
Objective To investigate the relationship between the colloid osmotic pressure (COP) as well asosmolality and the outcomes of critical patients. Method Totally 1568 critical patients were chosen from emergen-cy intensive care unit and surgical intensive care unit in Chaoyang Hospital Affiliated to Capital Medical Universityfrom January 2002 to December 2005, and divided into different groups according to levels of COP and osmolality.In group program Ⅰ, all patients were divided into 2 subgroups based on COP (the critical value was 20 mmHg =1.2 mOsm/kg H2O)on the day of admission. In group program Ⅱ, the same patients were divided into 3 sub-groups based on osmolality (the critical value was in the range from 280 mOsm/kg H2O aad 310 mOsm/kgH2O)which was also measured on the day of admission. The mortality of patients was calculated. Chi-square test wasused. Results Compared with patients of normal colloid osmotic pressure group, patients of lower colloid osmoticpressure group had higher mortality(24.5% vs. 17.7%, P = 0.001). Compared with the patients of normal os-molality group, the patients of lower total osmotic pressure group had lower mortality(17.0% vs. 24.5%, P =0.000). Conclusions Compared with the normal osmolality, the normal colloid osmotic pressure had the moreclosely relationship with the outcomes of critical patients, and it maybe a predictor of prognosis of the critical pa-tients.