Comparing the Scores of Sequential Organ Failure Assessment and a Proposed Bedside Tool in Patients with Systemic Inflammatory Response Syndrome Admitted to ICU

Sequential organ failure assessment (SOFA) is used to assess the severity of the disease and mortality rate in patients admitted to ICU. SOFA requires experiments that are impractical in centers with limited resources. The aim of this study was to compare the diagnostic value of bedside SOFA (b SOFA) and SOFA scores in mortality of ICU patients.

This cohort study was performed in 60 patients with Systemic Inflammatory Response Syndrome (SIRS) older than 18 years of age. SOFA and b SOFA scores were recorded at admission, then daily until admission at ICU.

According to the Lin and Bland-Altman agreement coefficient, there was a very good agreement between SOFA and b SOFA scores at days 1, 15, 16, 17, 18, and 20. At days 3, 5, 7, 14, and 19 we observed a good agreement and significant correlation between SOFA and b SOFA scores. Findings showed a moderate agreement between SOFA and b SOFA scores at days 2, 4, 6, 8, 9, 10, 11, 12, and 13, but at days 13 and 15 there was a direct relationship between the two scores (P>0.05). Area Under Curve (AUC) method in ROC Curve showed no significant difference in diagnostic value between SOFA and b SOFA scores except at day 17 (P>0.05), indicating acceptable diagnostic value of b SOFA score compared to SOFA score. The sensitivity and specificity of the tools in terms of prognosis were found to be very close at different times showing similar diagnostic values.

The study showed diagnostic accuracy, and high sensitivity and specificity for predicting mortality and strong positive correlation between the two tools, so b SOFA is a suitable alternative due to lower cost with greater ease.